mirror of
https://github.com/schoebel/mars
synced 2024-12-27 17:12:32 +00:00
5243 lines
162 KiB
Perl
Executable File
5243 lines
162 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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# MARS Long Distance Replication Software
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#
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# This file is part of MARS project: http://schoebel.github.io/mars/
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#
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# Copyright (C) 2010-2014 Thomas Schoebel-Theuer
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# Copyright (C) 2011-2014 1&1 Internet AG
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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use strict;
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use English;
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use warnings;
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umask 0077;
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##################################################################
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# global defaults
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my $threshold = 10 * 1024 * 1024;
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my $window = 30;
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my $verbose = 0;
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my $dry_run = 0;
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##################################################################
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# messaging
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my $error_count = 0;
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my $notify = "";
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my $logger = "/usr/bin/logger";
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sub llog {
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my ($text) = @_;
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if ($notify) {
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system("$logger -t marsadm \"$notify $text\"");
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}
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}
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sub lprint {
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my ($text) = @_;
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$OUTPUT_AUTOFLUSH = 1;
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print $text;
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llog($text);
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}
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sub lprint_stderr {
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my ($text) = @_;
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$OUTPUT_AUTOFLUSH = 1;
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print STDERR $text;
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llog($text);
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}
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sub ldie {
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my ($text) = @_;
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if ($verbose > 2) {
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my $i = 1;
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for (;;) {
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my ($package, $filename, $line, $subroutine, $hasargs, $wantarray, $evaltext, $is_require, $hints, $bitmask, $hinthash) = caller($i++);
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last unless defined($subroutine);
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lprint_stderr "$line:$subroutine\n";
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}
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}
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$error_count++;
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lprint_stderr "DYING: $text";
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llog("DYING: $text");
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die "\n";
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}
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sub lwarn {
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my ($text) = @_;
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lprint_stderr "WARNING: $text";
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llog("WARNING: $text");
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}
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##################################################################
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# global variables
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my $Id = '$Id$ ';
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my $user_version = 0.1;
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my $mars = "/mars";
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my $host = `uname -n` or ldie "cannot determine my network node name\n";
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chomp $host;
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check_id($host);
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my $real_host = $host;
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my $force = 0;
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my $timeout = -1;
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my $ip = "";
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my $kernel_version = 0;
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##################################################################
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# path correction
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sub correct_path {
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my ($path) = @_;
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# actual switches
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$path =~ s:(/is-attach)[a-z]*$:$1ed:;
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$path =~ s:(/is-)(fetch)[a-z]*$:$1copy:;
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$path =~ s:(/is-)(apply)[a-z]*$:$1replay:;
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$path =~ s:(/is-(copy|replay|sync))[a-z]*$:$1ing:;
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# todo switches
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$path =~ s:(/fetch)[a-z]*$:/connect:;
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$path =~ s:(/apply)[a-z]*$:/allow-replay:;
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$path =~ s:(/replay)[a-z]*$:/allow-replay:;
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return $path;
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}
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##################################################################
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# low-level infrastructure
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my @link_list = ();
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my %link_hash;
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sub get_link {
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my ($path, $unchecked) = @_;
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my $result = readlink($path);
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if (!defined($result)) {
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ldie "cannot read symlink '$path'\n" unless $unchecked;
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lwarn "cannot read symlink '$path'\n" if $unchecked == 1;
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$result = "";
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}
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return $result;
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}
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sub get_link_stamp {
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my ($path) = @_;
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my @stat = lstat($path);
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return 0 if (!@stat);
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return $stat[9];
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}
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sub is_link_recent {
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my ($path, $wind) = @_;
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$wind = $window unless defined($wind);
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my @stat = lstat($path);
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return 0 if (!@stat);
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return 1 if $stat[9] + $wind >= mars_time();
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return 0;
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}
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sub to_tmp {
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my $path = shift;
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$path =~ s:^(.*)/:$1/.tmp.:;
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return $path;
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}
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sub from_tmp {
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my $path = shift;
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$path =~ s:^(.*)/\.tmp\.:$1/:;
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return $path;
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}
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sub set_link {
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my ($src, $dst) = @_;
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my $dst_tmp = to_tmp($dst);
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unlink($dst_tmp);
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symlink($src, $dst_tmp) or ldie "cannot create symlink '$dst' -> '$src'\n";
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# the _order_ is important! remove existing intermediate element before re-appanding
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if (exists($link_hash{$dst})) {
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my @copy = @link_list;
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@link_list = ();
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foreach my $elem (@copy) {
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next if $elem eq $dst;
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push @link_list, $elem;
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}
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}
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$link_hash{$dst} = $src;
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push @link_list, $dst;
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}
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sub finish_links {
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return unless @link_list;
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my $timestamp = mars_time();
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lprint "using lamport timestamp $timestamp\n" if $verbose;
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while (my $link = shift @link_list) {
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my $link_tmp = to_tmp($link);
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my $target = readlink($link_tmp);
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my $this_timestamp = $timestamp;
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# allow overriding of secondaries in partitioned clusters by use of small timestamps
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if ($target eq "(none)") {
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my @stat = lstat($link);
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$this_timestamp = $stat[9] + 1 if @stat;
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}
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system("touch -h -d \"\@$this_timestamp\" $link_tmp") == 0 or ldie "cannot set mtime on symlink '$link_tmp'\n";
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if ($dry_run) {
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lprint "DRY_RUN: would create symlink '$link' -> '$target'\n";
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unlink($link_tmp);
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next;
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}
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rename($link_tmp, $link) or ldie "cannot finalize symlink '$link'\n";
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if ($verbose) {
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lprint "created symlink '$link' -> '$target'\n";
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}
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}
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_trigger();
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}
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##################################################################
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# global checks
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unless (defined($ARGV[0]) && $ARGV[0] =~ m/cluster|cat/) {
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$kernel_version = get_link("$mars/tree-$host", 1);
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if ($kernel_version && $user_version != $kernel_version) {
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lwarn "kernel_version=$kernel_version user_version=$user_version\n";
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if ($user_version < $kernel_version) {
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ldie "Sorry, your MARS kernel module uses version $kernel_version, but my $0 userspace version is only $user_version. That cannot work. Please upgrade your userspace scripts!\n";
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} elsif (int($user_version) > int($kernel_version) + 1) {
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ldie "MAJOR VERSION mismatch : only one major upgrade step is supported.\n";
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}
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lwarn "using different minor versions is possible, but you should upgrade your kernel module ASAP\n";
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}
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}
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sub get_alive_links {
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my $res = shift || "all";
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my $alive = shift || "alive";
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my $hosts = shift || "*";
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my $glob = "$mars/$alive-$hosts";
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if ($res ne "all" && $hosts ne "*") {
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$glob = "$mars/$alive-{";
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my $count = 0;
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foreach my $peer (glob("$mars/resource-$res/data-*")) {
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$peer =~ m:/data-(.+):;
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$glob .= "," if $count++;
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$glob .= $1;
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}
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$glob .= "}";
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}
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my %links;
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foreach my $path (glob($glob)) {
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$path =~ m:/$alive-(.+):;
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my $peer = $1;
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$links{$peer} = get_link($path);
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}
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return %links;
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}
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##################################################################
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# timeout handling
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#
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# return the lamport clock time in nanosecond resolution
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# fallback to system time()
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#
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sub mars_time {
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my $lamport_time;
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if (open(my $lamport_clock, "<", "/proc/sys/mars/lamport_clock")) {
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while (<$lamport_clock>) {
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$lamport_time = $1 if /^lamport_now=(.*)/;
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}
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close($lamport_clock);
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}
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return $lamport_time || time() . "." . '0' x 9;
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}
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sub sleep_timeout {
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my $sleeptime = shift || 5;
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my $continue = shift;
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if ($timeout < 0) {
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sleep($sleeptime);
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return;
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}
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if ($timeout <= 0) {
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if (!defined($continue) || !$continue) {
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ldie "Timeout reached.\n";
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}
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lwarn "Timeout reached. Continuing anyway.\n";
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}
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my $rest = $timeout;
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$rest = $sleeptime if $rest > $sleeptime;
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sleep($rest);
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$timeout -= $rest;
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}
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# wait for some condition
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sub wait_cond {
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my ($cmd, $res, $specific) = @_;
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my $is_actual = ($specific =~ s/^(is|has)-//);
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$specific =~ s/^todo-//;
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my $is_on = !($specific =~ s/-(off|0)$//);
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$specific =~ s/-(on|1)$//;
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if ($is_actual) {
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if ($specific eq "device") {
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check_mars_device($cmd, $res, 1, !$is_on);
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return;
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}
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my %table =
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(
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"attach" => "is-attached",
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"attached" => "is-attached",
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"replay" => "is-replaying",
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"replaying"=> "is-replaying",
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"fetch" => "is-copying",
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"fetching" => "is-copying",
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"copy" => "is-copying",
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"copying" => "is-copying",
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"sync" => "is-syncing",
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"syncing" => "is-syncing",
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"primary" => "is-primary",
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);
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my $name = $table{$specific};
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ldie "actual indicator '$specific' does not exist\n" unless exists($table{$specific});
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check_status($cmd, $res, $name, $is_on ? 1 : 0, 1, 1);
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} else {
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my %table =
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(
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"attach" => "attach",
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"attached" => "attach",
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"fetch" => "fetch",
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"connect" => "fetch",
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"replay" => "replay",
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"sync" => "sync",
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);
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my $name = $table{$specific};
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ldie "button '$specific' does not exist\n" unless exists($table{$specific});
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check_todo($cmd, $res, $name, $is_on ? 1 : 0, 1);
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}
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}
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# wait until some communication has occurred
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sub wait_cluster {
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my $cmd = shift;
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my $res = shift || "all";
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my $hosts = shift || "*";
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my $old_timeout = $timeout;
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my $start_time = mars_time();
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_trigger();
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my $delta = $timeout > 0 ? $timeout : 30;
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while (1) {
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my $dead_count = 0;
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my $alive_count = 0;
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my $unknown_count = 0;
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my %status = get_alive_links($res, "time", $hosts);
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my $now = mars_time();
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foreach my $peer (keys(%status)) {
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next if $peer eq $host;
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if ($status{$peer} >= $start_time) {
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$alive_count++;
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} elsif ($status{$peer} + $delta < $now) {
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$dead_count++;
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} else {
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$unknown_count++;
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}
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}
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if (!$unknown_count) {
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if (!$dead_count) {
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lprint "all $alive_count peer(s) seem to be alive\n";
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last;
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} else {
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lwarn "$alive_count peer(s) seem to be alive, and $dead_count peer(s) seem to be dead / not reachable\n";
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ldie "aborting because --force was given\n" if $force;
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}
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}
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sleep_timeout();
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last if $timeout <= 0 && !$unknown_count;
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}
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$timeout = $old_timeout;
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}
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##################################################################
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# syntactic checks
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# (also check for existence)
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sub check_id {
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my ($str, $must_exist) = @_;
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ldie "identifier '$str' is empty" unless defined($str) && $str;
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ldie "identifier '$str' has disallowed characters" unless $str =~ m/^[A-Za-z0-9_][-A-Za-z0-9_]*$/;
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ldie "identifier '$str' is too long (only 63 chars supported according to RFC 1123)" if length($str) > 63;
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if (defined($must_exist) && $must_exist) {
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my $ip_path = "$mars/ips/ip-$str";
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unless (get_link($ip_path, 1)) {
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ldie "host '$str' does not exist in $mars/ips/\n" if !$force;
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lwarn "host '$str' does not exist in $mars/ips/ - hopefully you know what you are doing via --force\n";
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}
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}
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}
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sub check_id_list {
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my ($str, $must_exist) = @_;
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ldie "comma-separated list '$str' has disallowed characters" unless $str =~ m/^[A-Za-z0-9_][-A-Za-z0-9_,]*$/;
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foreach my $id (split(",", $str)) {
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check_id($id, $must_exist);
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}
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}
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##################################################################
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# semantic checks
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sub check_res {
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my $res = shift;
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if (not -d "$mars/resource-$res") {
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# DO WHAT I MEAN: try to substitute a device name for a badly given resource name if it is unique
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my $count = 0;
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my $found;
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my @tests = glob("$mars/resource-*/device-$host");
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foreach my $test (@tests) {
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my $target = get_link($test, 2);
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if ($target eq $res) {
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$found = $test;
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$count++;
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}
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}
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if (!$count) {
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@tests = glob("$mars/resource-*/_direct-*-$host");
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foreach my $test (@tests) {
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my $target = get_link($test, 2);
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$target =~ s/^.*,//;
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if ($target eq $res) {
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$found = $test;
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$count++;
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}
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}
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}
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ldie "resource '$res' does not exist ($count replacements found)\n" unless $count == 1 and $found;
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$found =~ s:^.*/resource-(.*)/.*$:$1:;
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lwarn "substituting bad resource name '$res' by uniquely matching resource name '$found'\n";
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$res = $found;
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}
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return $res;
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}
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sub _get_mars_size {
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my ($cmd, $res) = @_;
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my $dev_name = get_link("$mars/resource-$res/device-$host");
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my $info = "/sys/devices/virtual/block/mars!$dev_name/size";
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return `cat $info` * 512;
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}
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sub check_sizes {
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my ($res, $peer) = @_;
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my $physical_size = get_link("$mars/resource-$res/actsize-$peer", 2) || return;
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my $logical_size = get_link("$mars/resource-$res/size", 1);
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if (defined($physical_size) && $physical_size < $logical_size) {
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lwarn "Physical device on host '$peer' has size $physical_size, which is smaller than the logical resource size $logical_size\n";
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ldie "This is too dangerous. It cannot work. Fix it!\n" unless $force;
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}
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}
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sub check_res_member {
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my ($cmd, $res) = @_;
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if (! -l "$mars/resource-$res/data-$host") {
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if (-l "$mars/resource-$res/replay-$host") {
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lwarn "Resource '$res' seems to have been destroyed.\n";
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lwarn "Nevertheless, a replay link exists for host '$host'.\n";
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lwarn "This can happen after 'leave-resource --host=$host' while host $host was active.\n";
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lwarn "mars-manual.pdf forbids any usage of such a resource _strongly_.\n";
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lwarn "In order to finally remove this resource from $host, use the\n";
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lwarn "command 'marsadm leave-resource --force $res'\n";
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} else {
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lwarn "Sorry, I have not yet joined to resource '$res'\n";
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}
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ldie "Refusing work on resource name '$res'\n" unless $force;
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lwarn "Running '$cmd' is dangerous, continuing on your own risk\n" unless $cmd eq "leave-resource";
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}
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check_sizes($res, $host);
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}
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sub check_sync_finished {
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my ($res, $peer) = @_;
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check_sizes(@_);
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my $lnk = "$mars/resource-$res/syncstatus-$peer";
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if (lstat($lnk)) {
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my $syncstatus = get_link($lnk, 1);
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my $size = get_link("$mars/resource-$res/size");
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unless ($syncstatus >= $size) {
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lwarn "Sync has not yet finished on host '$peer', only $syncstatus / $size bytes are transferred\n";
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if ($peer eq $host) {
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lwarn "Don't try to make inconsistent host '$host' the new primary!\n";
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lwarn "Please wait until sync has finished and all logfile have been replayed.\n";
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} else {
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lwarn "Changing the primary role during sync is dangerous for data consistency on host '$peer'!\n";
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}
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ldie "First stop the sync before trying to switch primary!\n" unless $force;
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}
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}
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lprint "OK, it seems that sync has finished on host '$peer'.\n";
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}
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sub check_primary {
|
|
my ($cmd, $res) = @_;
|
|
my $lnk = "$mars/resource-$res/actual-$host/is-primary";
|
|
my $is_primary = get_link($lnk, 1);
|
|
if (!$is_primary) { # give it a second chance
|
|
my $name = get_link("$mars/resource-$res/device-$host", 1);
|
|
my $dev = "/dev/mars/$name";
|
|
$is_primary = 1 if -b $dev;
|
|
}
|
|
ldie "for operation '$cmd' I need to be primary\n" unless $is_primary;
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "for operation '$cmd', I also must be the designated primary\n" unless $primary eq $host;
|
|
}
|
|
|
|
sub check_not_primary {
|
|
my ($cmd, $res) = @_;
|
|
my $lnk = "$mars/resource-$res/actual-$host/is-primary";
|
|
my $is_primary = get_link($lnk, 1);
|
|
if ($is_primary) {
|
|
ldie "operation '$cmd' cannot be executed on primary\n" unless $force;
|
|
lwarn "operation '$cmd' is forced on actual primary '$host', THIS IS RISKY\n";
|
|
}
|
|
# also check whether we intend to become primary
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "operation '$cmd' cannot be executed on designated primary\n" if $primary eq $host;
|
|
}
|
|
|
|
sub check_primary_gone {
|
|
my ($res) = @_;
|
|
for (;;) {
|
|
my $pri = _get_actual_primary($res);
|
|
last if !$pri;
|
|
last if $pri eq $host;
|
|
lprint "waiting for other primary host ($pri) to disappear....\n";
|
|
sleep_timeout();
|
|
}
|
|
}
|
|
|
|
sub _make_messages {
|
|
my ($cmd, $res, $key, $val, $wait, $unchecked, $inv) = @_;
|
|
my %table =
|
|
(
|
|
"is-attached" => "attach",
|
|
"is-syncing" => "sync",
|
|
"is-copying" => "fetch",
|
|
"is-replaying" => "replay",
|
|
"is-primary" => "primary",
|
|
);
|
|
my $key_msg = defined($table{$key}) ? $table{$key} : $key;
|
|
my $val_msg = $val ? "on" : "off";
|
|
my $wait_msg = $wait ? "waiting until" : "ensuring that";
|
|
my $new_val = (defined($inv) && $inv) ? !$val : $val;
|
|
my $action_msg = ($new_val ? "'resume-" : "'pause-") . $key_msg . "'";
|
|
if ($key_msg eq "primary") {
|
|
$action_msg = $new_val ? "'$key_msg'" : "'secondary' (or better 'primary' on another host)";
|
|
} elsif ($key_msg eq "attach") {
|
|
$action_msg = $new_val ? "'$key_msg'" : "'detach'";
|
|
}
|
|
$action_msg = "Use $action_msg and/or wait until it has really succeeded.";
|
|
$action_msg .= " Notice that MARS is an ASYNCHRONOUS system, where both execution of actions, as well as propagation over the network may take some time." if $verbose;
|
|
$action_msg .= " Don't expect magic to happen if the network has some problems, or when the system load is extremely high." if $verbose > 1;
|
|
$action_msg .= " Please read the PDF manual, and try to understand it." if $verbose > 2;
|
|
return ($key_msg, $val_msg, $wait_msg, $action_msg);
|
|
}
|
|
|
|
sub check_todo {
|
|
my ($cmd, $res, $key, $val, $wait, $unchecked, $inv) = @_;
|
|
my ($key_msg, $val_msg, $wait_msg, $action_msg) = _make_messages(@_);
|
|
$key =~ s/fetch/connect/;
|
|
my $path = "$mars/resource-$res/todo-$host/$key";
|
|
$path = correct_path($path);
|
|
my $link;
|
|
for (;;) {
|
|
$link = get_link($path, $unchecked);
|
|
return unless defined($link);
|
|
if (defined($inv) && $inv) {
|
|
last if $link != $val;
|
|
lprint "$wait_msg switch '$key' != '$val'....\n";
|
|
ldie "Cannot execute $cmd on resource $res: todo-switch '$key_msg' must not be $val_msg. $action_msg\n" if !$wait;
|
|
} else {
|
|
last if $link == $val;
|
|
lprint "$wait_msg switch '$key' == '$val'....\n";
|
|
ldie "Cannot execute $cmd on resource $res: todo-switch '$key_msg' must be $val_msg, but actually has value '$link'. $action_msg\n" if !$wait;
|
|
}
|
|
sleep_timeout();
|
|
}
|
|
lprint "OK, '$path' has acceptable value '$link'\n";
|
|
}
|
|
|
|
sub check_status {
|
|
my ($cmd, $res, $key, $val, $wait, $unchecked, $inv) = @_;
|
|
my ($key_msg, $val_msg, $wait_msg, $action_msg) = _make_messages(@_);
|
|
my $path = correct_path("$mars/resource-$res/actual-$host/$key");
|
|
my $link;
|
|
for (;;) {
|
|
$link = get_link($path, $unchecked);
|
|
$link = 0 unless (defined($link) && $link ne "");
|
|
if (defined($inv) && $inv) {
|
|
last if $link != $val;
|
|
lprint "$wait_msg actual '$key' != '$val'...\n";
|
|
ldie "Cannot execute $cmd on resource $res: actual '$key_msg' must not be $val_msg. $action_msg Also ensure that your command _can_ succeed.\n" if !$wait;
|
|
} else {
|
|
last if $link == $val;
|
|
lprint "$wait_msg actual '$key' == '$val'...\n";
|
|
ldie "Cannot execute $cmd on resource $res: actual '$key_msg' must be $val_msg. $action_msg Also ensure that your command _can_ succeed.\n" if !$wait;
|
|
}
|
|
sleep_timeout();
|
|
}
|
|
lprint "OK, '$path' has acceptable value '$link'\n";
|
|
}
|
|
|
|
sub check_mars_device {
|
|
my ($cmd, $res, $wait, $inv) = @_;
|
|
my $name = get_link("$mars/resource-$res/device-$host", $inv);
|
|
my $dev = "/dev/mars/$name";
|
|
my $backoff = 1;
|
|
my $round = 0;
|
|
if ($inv) {
|
|
while (-b $dev) {
|
|
ldie "cannot execute $cmd: device '$dev' has not yet disappeared\n" if !$wait;
|
|
lwarn "device '$dev' has not yet disappeared\n";
|
|
sleep_timeout($backoff);
|
|
# very slowly increasing backoff
|
|
if ($backoff < 10 && $round++ > 5) {
|
|
$round = 0;
|
|
$backoff++;
|
|
}
|
|
}
|
|
lprint "device '$dev' is no longer present\n" unless -b $dev;
|
|
return;
|
|
}
|
|
# !$inv
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "for operation '$cmd', I should be the designated primary\n" unless $primary eq $host;
|
|
while (! -e $dev) {
|
|
my $text = get_error_text($cmd, $res);
|
|
lprint $text if $text;
|
|
ldie "aborting due to errors\n" if $text =~ m/error/mi;
|
|
ldie "cannot execute $cmd: device '$dev' not yet present\n" if !$wait;
|
|
lprint "device '$dev' not yet present\n";
|
|
sleep_timeout($backoff);
|
|
# very slowly increasing backoff
|
|
if ($backoff < 10 && $round++ > 5) {
|
|
$round = 0;
|
|
$backoff++;
|
|
}
|
|
}
|
|
lprint "device '$dev' is present\n" if -b $dev;
|
|
}
|
|
|
|
sub check_userspace {
|
|
my ($dst) = @_;
|
|
if ($dst !~ m:/userspace/:) {
|
|
ldie "your path '$dst' must be inside $mars/userspace/ or $mars/resource-*/userspace/\n" unless $force;
|
|
lwarn "your path '$dst' is outside $mars/userspace/ or $mars/resource-*/userspace/ and you gave --force, hopefully YOU KNOW WHAT YOU ARE DOING\n";
|
|
}
|
|
}
|
|
|
|
sub check_sync_startable {
|
|
my ($cmd, $res) = @_;
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "Cannot execute '$cmd' because noone is designated as primary.\n" if (!$primary || $primary eq "(none)");
|
|
# no danger when switch is turned on at the primary side.
|
|
return if $primary eq $host;
|
|
my $emergency_path = "$mars/resource-$res/actual-$primary/has-emergency";
|
|
my $emergency = get_link($emergency_path, 1);
|
|
if ($emergency) {
|
|
ldie "Primary '$primary' is in emergency mode. Cannot start sync.\nFree some space there first.\n";
|
|
}
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# state inspection routines
|
|
|
|
sub _get_minmax {
|
|
my ($res, $glob, $take_symlink) = @_;
|
|
my $min = -1;
|
|
my $max = -1;
|
|
my @paths = glob($glob) or lwarn "cannot find '$glob'\n";
|
|
foreach my $path (@paths) {
|
|
my $nr = $path;
|
|
if ($take_symlink) {
|
|
$nr = get_link($path, 1);
|
|
}
|
|
$nr =~ s@^(?:.*/)?[a-z]+-([0-9]+)(-[^/]*)?$@$1@;
|
|
$min = $nr if ($nr < $min || $min < 0);
|
|
$max = $nr if ($nr > $max || $max < 0);
|
|
}
|
|
return ($min, $max);
|
|
}
|
|
|
|
sub get_minmax_logfiles {
|
|
my ($res, $peer) = @_;
|
|
$peer = "" unless defined($peer);
|
|
return _get_minmax($res, "$mars/resource-$res/log-*$peer", 0);
|
|
}
|
|
|
|
sub get_minmax_versions {
|
|
my ($res, $peer) = @_;
|
|
$peer = "" unless defined($peer);
|
|
return _get_minmax($res, "$mars/resource-$res/version-*$peer", 0);
|
|
}
|
|
|
|
sub get_minmax_any {
|
|
my ($res, $peer) = @_;
|
|
$peer = "" unless defined($peer);
|
|
return _get_minmax($res, "$mars/resource-$res/{log,version}-*$peer", 0);
|
|
}
|
|
|
|
sub get_minmax_replays {
|
|
my ($res, $peer) = @_;
|
|
$peer = "" unless defined($peer);
|
|
return _get_minmax($res, "$mars/resource-$res/replay-*$peer", 1);
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# generic comparisons
|
|
|
|
sub compare_replaylinks {
|
|
my ($a, $b) = @_;
|
|
$a =~ m/log-([0-9]+)[^,]*,([0-9]+)/;
|
|
my ($a_log, $a_pos) = ($1, $2);
|
|
$b =~ m/log-([0-9]+)[^,]*,([0-9]+)/;
|
|
my ($b_log, $b_pos) = ($1, $2);
|
|
return -1 if $a_log < $b_log;
|
|
return +1 if $a_log > $b_log;
|
|
return -1 if $a_pos < $b_pos;
|
|
return +1 if $a_pos > $b_pos;
|
|
return 0;
|
|
}
|
|
|
|
##################################################################
|
|
|
|
sub get_amount {
|
|
my ($resdir, $host, $direction, $only_files) = @_;
|
|
my $level = 0;
|
|
my $firstpos = 0;
|
|
my $logpos = 0;
|
|
my $oldpos = 0;
|
|
my $sum = 0;
|
|
for (;;) {
|
|
my $val0 = 0;
|
|
my $ok = 0;
|
|
if (!$level) {
|
|
my $replay_path = sprintf("%s/replay-%s", $resdir, $host);
|
|
my $replay_link = get_link($replay_path, 1);
|
|
return (0, 0, 0, 0) if !$replay_link;
|
|
return (0, 0, 0, 0) if $replay_link !~ m:log-([0-9]+)-[^,]+,([0-9]+),([0-9]+):;
|
|
$firstpos = int($1);
|
|
$logpos = $firstpos;
|
|
if ($direction < 0) {
|
|
$sum = $2;
|
|
} else {
|
|
$val0 = $2;
|
|
$sum = $3;
|
|
}
|
|
}
|
|
if ($level > 0 || $direction > 0) {
|
|
my $file = sprintf("%s/log-%09d-%s", $resdir, $logpos, $host);
|
|
my @stat = stat($file);
|
|
my $val = 0;
|
|
if (@stat) {
|
|
$val = $stat[7];
|
|
$ok = 1;
|
|
} else {
|
|
my $glob = sprintf("%s/log-%09d-*", $resdir, $logpos);
|
|
foreach $file (glob($glob)) {
|
|
my @tstat = stat($file);
|
|
if (@tstat && $tstat[7] > $val) {
|
|
@stat = @tstat;
|
|
$val = $stat[7];
|
|
$ok = 1;
|
|
}
|
|
}
|
|
}
|
|
if (!$only_files) {
|
|
my $glob = sprintf("%s/version-%09d-*", $resdir, $logpos);
|
|
foreach $file (glob($glob)) {
|
|
my $vers_link = get_link($file, 1);
|
|
if ($vers_link && $vers_link =~ m;,([0-9]+):;) {
|
|
my $nval = $1;
|
|
$val = $nval if $nval > $val;
|
|
$ok = 1;
|
|
}
|
|
}
|
|
}
|
|
return ($sum, $firstpos, $oldpos, $level) unless $ok;
|
|
if ($level > 0) {
|
|
$sum += $val;
|
|
} else {
|
|
# the logfile may be bigger than the replay pos/length
|
|
my $new_sum = $val - $val0;
|
|
$sum = $new_sum if $new_sum > $sum;
|
|
$sum = 0 if $sum < 0;
|
|
}
|
|
}
|
|
$oldpos = $logpos;
|
|
if ($direction > 0) {
|
|
$logpos++;
|
|
} elsif ($direction < 0) {
|
|
$logpos--;
|
|
return ($sum, $firstpos, $oldpos, $level) if $logpos < 1;
|
|
} else {
|
|
return ($sum, $firstpos, $oldpos, $level);
|
|
}
|
|
$level++;
|
|
}
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# versionlink path handling routines
|
|
|
|
my %visited_pos;
|
|
|
|
sub _visit {
|
|
my ($nr, $peer) = @_;
|
|
$nr =~ s:^0*::;
|
|
my $visit = "$nr,$peer";
|
|
$visited_pos{$visit} = 1;
|
|
}
|
|
|
|
sub _is_visited {
|
|
my ($nr, $peer) = @_;
|
|
$nr =~ s:^0*::;
|
|
my $visit = "$nr,$peer";
|
|
return $visited_pos{$visit};
|
|
}
|
|
|
|
sub _parse_pos {
|
|
my ($basedir, $pos) = @_;
|
|
if ($pos =~ m/log-([0-9]+)-([^,]+)/) {
|
|
_visit($1, $2);
|
|
} elsif ($pos =~ m/version-([0-9]+)-([^,]+)/p) {
|
|
my $vers = get_link("$basedir/$MATCH");
|
|
my $count_matches = 0;
|
|
while ($vers =~ m/log-([0-9]+)-([^,]+)/p) {
|
|
$vers = $POSTMATCH;
|
|
_visit($1, $2);
|
|
$count_matches++;
|
|
}
|
|
lwarn "cannot parse '$pos' -> '$vers'\n" unless $count_matches;
|
|
} else {
|
|
lwarn "cannot parse '$pos'\n";
|
|
}
|
|
$pos =~ m/((?:log|version)-([0-9]+)-([^,]+)(?:,([0-9]+))?)/ or lwarn "cannot parse position info '$pos'\n";
|
|
return ($1, int($2), $3, defined($4) ? int($4) : -1);
|
|
}
|
|
|
|
sub _get_prev_pos {
|
|
my ($basedir, $nr, $peer) = @_;
|
|
my $path = sprintf("version-%09d-$peer", $nr);
|
|
my $vers = get_link("$basedir/$path", 2);
|
|
_parse_pos($basedir, $path) if defined($vers) && $vers;
|
|
$vers =~ s/^.*://;
|
|
return $vers;
|
|
}
|
|
|
|
sub _get_common_ancestor {
|
|
for (;;) {
|
|
my ($basedir, $pos1, $host1, $dep1, $pos2, $host2, $dep2) = @_;
|
|
my ($p1, $nr1, $from1, $len1) = _parse_pos($basedir, $pos1);
|
|
my ($p2, $nr2, $from2, $len2) = _parse_pos($basedir, $pos2);
|
|
if ($p1 eq $p2) {
|
|
# usually no split brain here (only if both path depths are non-zero)
|
|
my $split = ($dep1 && $dep2);
|
|
if (!$split) { # additionally check the corresponding version links
|
|
my $path1 = sprintf("$basedir/version-%09d-$from1", $nr1);
|
|
my $path2 = sprintf("$basedir/version-%09d-$from2", $nr2);
|
|
if (my $vers1 = get_link($path1, 1) and my $vers2 = get_link($path2, 1)) {
|
|
$split = 1 if $vers1 ne $vers2;
|
|
}
|
|
}
|
|
return ($p1, $split);
|
|
} elsif ($nr1 > $nr2) {
|
|
# just flip arguments
|
|
@_ = ($basedir, $pos2, $host2, $dep2, $pos1, $host1, $dep1);
|
|
next;
|
|
} elsif ($nr1 < $nr2) {
|
|
# recursively advance path depth
|
|
my $vers2 = _get_prev_pos($basedir, $nr2, $host2);
|
|
return ("", -1) if !$vers2;
|
|
@_ = ($basedir, $pos1, $host1, $dep1, $vers2, $host2, $dep2 + 1);
|
|
next;
|
|
} elsif ($from1 ne $from2) {
|
|
# split brain is sure now, but continue computing the common split point
|
|
my $vers1 = _get_prev_pos($basedir, $nr1, $host1);
|
|
return ("", 1) if !$vers1;
|
|
my $vers2 = _get_prev_pos($basedir, $nr2, $host2);
|
|
return ("", 1) if !$vers2;
|
|
my ($res, $split) = _get_common_ancestor($basedir, $vers1, $host1, $dep1 + 1, $vers2, $host2, $dep2 + 1);
|
|
return ($res, 1);
|
|
} elsif ($len1 < $len2) {
|
|
# there may be no split brain (just incomplete replay) depending on path depth
|
|
return ($p1, $dep1);
|
|
} elsif ($len2 < $len1) {
|
|
# dto symmetric
|
|
return ($p2, $dep2);
|
|
}
|
|
lwarn "error in algorithm: $p1, $nr1, $from1, $len1 : $p2, $nr2, $from2, $len2\n";
|
|
return ("", -1);
|
|
}
|
|
}
|
|
|
|
sub get_common_ancestor {
|
|
my ($basedir, $host1, $host2) = @_;
|
|
my $repl1 = get_link("$basedir/replay-$host1", 1);
|
|
my $repl2 = get_link("$basedir/replay-$host2", 1);
|
|
return _get_common_ancestor($basedir, $repl1, $host1, 0, $repl2, $host2, 0);
|
|
}
|
|
|
|
my %detected_splits = ();
|
|
|
|
sub detect_splitbrain {
|
|
my ($res, $do_report) = @_;
|
|
# dynamic programming
|
|
return $detected_splits{$res} if defined($detected_splits{$res});
|
|
my $basedir = "$mars/resource-$res";
|
|
my $ok = 1;
|
|
my @list = glob("$mars/resource-$res/replay-*");
|
|
my @hosts = map { $_ =~ s:.*/replay-::; $_ } @list;
|
|
foreach my $host1 (@hosts) {
|
|
foreach my $host2 (@hosts) {
|
|
next if $host1 ge $host2;
|
|
my ($res, $split) = get_common_ancestor($basedir, $host1, $host2);
|
|
if ($split) {
|
|
$ok = 0;
|
|
if ($do_report) {
|
|
lwarn "SPLIT BRAIN at '$res' detected: hostA = '$host1', hostB = '$host2'\n";
|
|
} else {
|
|
return $ok;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ($ok) { # check for duplicate logfiles
|
|
my @logs = glob("$mars/resource-$res/log-*");
|
|
my $oldnr = -1;
|
|
foreach my $path (sort(@logs)) {
|
|
$path =~ m:/log-([0-9]+):;
|
|
my $nr = $1;
|
|
if ($nr == $oldnr) {
|
|
$ok = 0;
|
|
lwarn "SPLIT BRAIN at '$res' detected: duplicate logfile number $nr\n";
|
|
lwarn "hint: first resolve split brain by 'leave-resource' or 'invalidate'\n";
|
|
lwarn "hint: if this does not help, try cleanup via 'log-purge-all'\n";
|
|
lwarn "hint: if this does not help, try 'log-purge-all --force'\n";
|
|
last;
|
|
}
|
|
$oldnr = $nr;
|
|
}
|
|
}
|
|
$detected_splits{$res} = $ok;
|
|
return $ok;
|
|
}
|
|
|
|
sub _mark_path_backward {
|
|
my ($basedir, $pos, $peer, $skip, $jump_peer) = @_;
|
|
my $sum = 0;
|
|
my $base_nr = 0;
|
|
for (;;) {
|
|
my ($p, $nr, $from, $len) = _parse_pos($basedir, $pos);
|
|
last if defined($skip) && $nr < $skip;
|
|
$base_nr = $nr;
|
|
_visit($nr, $peer);
|
|
# When following chains from foreign hosts (e.g. the designated primary),
|
|
# we must jump over to our own chain somewhen, because the lengths of
|
|
# the chains may be different (caused by invalidate & friends).
|
|
if (defined($jump_peer) && $jump_peer ne $peer) {
|
|
my $peer_path = sprintf("$basedir/version-%09d-$peer", $nr);
|
|
my $jump_path = sprintf("$basedir/version-%09d-$jump_peer", $nr);
|
|
my $peer_version = get_link($peer_path, 2);
|
|
my $jump_version = get_link($jump_path, 2);
|
|
if (defined($peer_version) && defined($jump_version) && $peer_version eq $jump_version) {
|
|
$peer = $jump_peer;
|
|
}
|
|
}
|
|
$pos = _get_prev_pos($basedir, $nr, $peer, 1);
|
|
last if !$pos;
|
|
# optionally don't count the last versionlink, pointing into nirvana
|
|
if (defined($skip) && $skip && $nr > 1) {
|
|
my ($p, $nr, $from, $len) = _parse_pos($basedir, $pos);
|
|
last if !$p;
|
|
my $next = _get_prev_pos($basedir, $nr, $peer, 1);
|
|
last if !$next;
|
|
}
|
|
$sum += $len;
|
|
}
|
|
return ($sum, $base_nr);
|
|
}
|
|
|
|
sub _mark_path_forward {
|
|
my ($basedir, $pos, $peer) = @_;
|
|
my @list = ($pos);
|
|
while (@list) {
|
|
my %next_list;
|
|
foreach $pos (@list) {
|
|
my ($p, $nr, $from, $len) = _parse_pos($basedir, $pos);
|
|
my $cand = sprintf("$basedir/version-%09d-$peer", $nr + 1);
|
|
my $vers = get_link($cand, 2);
|
|
next unless defined($vers) && $vers ne "";
|
|
$vers =~ s/^.*://;
|
|
my ($cp, $cnr, $cfrom, $clen) = _parse_pos($basedir, $vers);
|
|
if (int($cnr) == int($nr) && $cfrom eq $from && $clen == $len) {
|
|
$next_list{$cand} = 1;
|
|
}
|
|
}
|
|
@list = keys(%next_list);
|
|
}
|
|
}
|
|
|
|
sub _mark_path_transitive {
|
|
_mark_path_forward(@_);
|
|
_mark_path_backward(@_);
|
|
}
|
|
|
|
sub log_purge_res {
|
|
my ($cmd, $res) = @_;
|
|
lwarn "DANGEROUS OPERATION: $cmd --force on resource '$res'\n" if $force;
|
|
%visited_pos = ();
|
|
my %start_logs;
|
|
my $start_count = 0;
|
|
my $basedir = "$mars/resource-$res";
|
|
foreach my $data (glob("$basedir/{data,replay}-*")) {
|
|
$data =~ m:/(data|replay)-(.+):;
|
|
my $peer = $2;
|
|
my $replay = "$basedir/replay-$peer";
|
|
my $target = get_link($replay, 1);
|
|
lprint "found replay link '$replay' -> '$target'\n";
|
|
$target =~ s/,.*//;
|
|
$start_logs{$target}++;
|
|
$start_count++;
|
|
_mark_path_transitive($basedir, $target, $peer);
|
|
}
|
|
if (!$start_count) {
|
|
ldie "Resource contains no valid information - refusing to delete everything for safety reasons\n";
|
|
}
|
|
my %logs;
|
|
foreach my $file (glob("$basedir/version-*")) {
|
|
$file =~ m:/(version-([0-9]+)-([^,]+)): or ldie "bad path '$file'\n";
|
|
my $cand = $1;
|
|
my $nr = $2;
|
|
my $from = $3;
|
|
lprint "checking '$cand'\n";
|
|
my $vers = get_link($file, 1);
|
|
$vers =~ m/(log-[0-9]+-[^,:]+)/;
|
|
my $log = $1;
|
|
lprint " corresponding logfile is '$log'\n";
|
|
if (_is_visited($nr, $from)) {
|
|
lprint " ok '$cand'\n";
|
|
$logs{$log}++;
|
|
next;
|
|
}
|
|
if (!$force && $from ne $host) {
|
|
lprint " skipping foreign object '$cand'\n";
|
|
$logs{$log}++;
|
|
next;
|
|
}
|
|
lwarn "deleting foreign object from peer '$from' because you said --force\n" if $from ne $host;
|
|
_create_delete($file);
|
|
}
|
|
foreach my $file (glob("$basedir/log-*")) {
|
|
$file =~ m:/(log-[0-9]+-(.*)): or ldie "bad path '$file'\n";
|
|
my $log = $1;
|
|
my $from = $2;
|
|
lprint "checking '$log'\n";
|
|
if ($logs{$log}) {
|
|
lprint " ok '$log'\n";
|
|
$logs{$log} = -1;
|
|
next;
|
|
}
|
|
if ($start_logs{$log}) {
|
|
lprint " ok start '$log'\n";
|
|
$logs{$log} = -1;
|
|
next;
|
|
}
|
|
if (!$force && $from ne $host) {
|
|
lprint " skipping foreign object '$log'\n";
|
|
next;
|
|
}
|
|
lwarn "deleting foreign object from peer '$from' because you said --force\n" if $from ne $host;
|
|
_create_delete($file);
|
|
}
|
|
my $count = 0;
|
|
foreach my $log (sort(keys(%logs))) {
|
|
my $nr = $logs{$log};
|
|
next if $nr < 0 || -e "$basedir/$log";
|
|
lprint_stderr "info: logfile '$log' is referenced ($nr), but not present.\n";
|
|
$count++;
|
|
}
|
|
if ($count) {
|
|
lprint_stderr " Unreferenced logfiles are not necessarily bad.\n";
|
|
lprint_stderr " They can regularly appear after 'leave-resource',\n";
|
|
lprint_stderr " or 'invalidate', or after emergency mode,\n";
|
|
lprint_stderr " or after similar operations.\n";
|
|
}
|
|
finish_links();
|
|
_wait_delete();
|
|
}
|
|
|
|
sub try_to_avoid_splitbrain {
|
|
my ($cmd, $res, $old_primary) = @_;
|
|
my $old_timeout = $timeout;
|
|
$timeout = $window * 2 if $timeout < 0;
|
|
$old_primary = "" if $old_primary eq "(none)";
|
|
wait_cluster($cmd, $res, $old_primary);
|
|
if (!detect_splitbrain($res, 0)) {
|
|
lwarn "ATTENTION: you are starting a non-forced primary switchover in a split brain situation.\n";
|
|
lwarn "ATTENTION: that's no good idea.\n";
|
|
lwarn "ATTENTION: I will continue to do what you want.\n";
|
|
lwarn "ATTENTION: But you are responsible for the consequences.\n";
|
|
$timeout = $old_timeout;
|
|
return;
|
|
}
|
|
# now try to prevent producing a _new_ split brain situation....
|
|
my @host_list = glob("$mars/resource-$res/replay-*");
|
|
$timeout = $old_timeout;
|
|
return if scalar(@host_list) < 2;
|
|
$timeout = $window * 2 if $timeout < 0;
|
|
my $old_situation = "";
|
|
for (;;) {
|
|
my ($min, $max) = get_minmax_versions($res);
|
|
my $vers_glob = sprintf("$mars/resource-$res/version-%09d-*", $max);
|
|
my $ok = 1;
|
|
my $replay_err_path = "$mars/resource-$res/actual-$host/msg-err-replay-stop";
|
|
my $replay_err = get_link($replay_err_path, 1);
|
|
if ($replay_err && $replay_err ne "OK") {
|
|
my @stat = lstat($replay_err_path);
|
|
if ($stat[9] + $window >= mars_time()) {
|
|
my $msg = _get_text($replay_err);
|
|
lwarn "cannot guarantee split brain avoidance: $msg\n";
|
|
last;
|
|
}
|
|
}
|
|
my $emergency_path = "$mars/resource-$res/actual-$host/has-emergency";
|
|
my $emergency = get_link($emergency_path, 1);
|
|
if ($emergency) {
|
|
ldie "emergency mode $emergency has been entered locally: handover is not possible. Either free some space in $mars/, or use --force to use a potentially outdated version.\n";
|
|
}
|
|
my $primary = _get_designated_primary($res);
|
|
if ($primary eq "(none)") {
|
|
# try to determine the old primary when unique
|
|
my $glob_logs = sprintf("$mars/resource-$res/log-%09d-*", $max);
|
|
my @candidates = glob($glob_logs);
|
|
if (scalar(@candidates) == 1) {
|
|
my $log_path = pop @candidates;
|
|
if ($log_path =~ m:/log-[0-9]+-(.+)$:) {
|
|
$primary = $1;
|
|
lprint "Using last primary '$primary' as a substitute.\n";
|
|
}
|
|
}
|
|
}
|
|
# if the old primary is known, we can ignore all other / unrelated hosts
|
|
if ($primary && $primary ne $host && $primary ne "(none)") {
|
|
my $p_path = sprintf("$mars/resource-$res/version-%09d-%s", $max, $primary);
|
|
my $h_path = sprintf("$mars/resource-$res/version-%09d-%s", $max, $host);
|
|
my $p_vers = get_link($p_path, 1);
|
|
my $h_vers = get_link($h_path, 1);
|
|
if (!$p_vers || !$h_vers || $p_vers ne $h_vers) {
|
|
$ok = 0;
|
|
}
|
|
} else {
|
|
# old primary is unknown: we have no chance, other than comparing _all_ versions.
|
|
my @versions = glob($vers_glob);
|
|
my $first = get_link(shift @versions);
|
|
while (@versions) {
|
|
my $next = get_link(shift @versions);
|
|
if ($next ne $first) {
|
|
$ok = 0;
|
|
}
|
|
}
|
|
}
|
|
last if $ok;
|
|
lprint "Trying to avoid split brain for $timeout s: logfile update not yet completed.\n";
|
|
my $tpl = get_macro("replinfo");
|
|
my $new_situation = eval_macro($cmd, $res, $tpl, @_);
|
|
print $new_situation;
|
|
$timeout = $window * 2 if $new_situation ne $old_situation;
|
|
sleep_timeout();
|
|
$old_situation = $new_situation;
|
|
}
|
|
$timeout = $old_timeout;
|
|
}
|
|
|
|
sub get_size {
|
|
my $arg = shift;
|
|
my $orig_arg = $arg;
|
|
# Do what I mean: when given a device, take its actual size.
|
|
if (-b $arg) {
|
|
my $mangled = $arg;
|
|
$mangled =~ s:/dev/::;
|
|
$mangled =~ s:/:!:g;
|
|
my $path = "/sys/block/$mangled/size";
|
|
$arg = `cat $path` * 512 if -r $path;
|
|
}
|
|
if ($arg !~ m/^([0-9]+(?:\.[0-9]*)?)([kmgtp]?)$/i) {
|
|
ldie "Size argument '$arg' must be a number, optionally followed by a suffix [kKmMgGtTpP]. Lowercase = multiples of 1000, Uppercase = multiples of 1024.\n";
|
|
}
|
|
my $mod = $2 || "";
|
|
$arg = $1;
|
|
$_ = $mod;
|
|
SWITCH: {
|
|
/^$/ and last SWITCH;
|
|
/^k$/ and $arg *= 1000, last SWITCH;
|
|
/^m$/ and $arg *= 1000 * 1000, last SWITCH;
|
|
/^g$/ and $arg *= 1000 * 1000 * 1000, last SWITCH;
|
|
/^t$/ and $arg *= 1000 * 1000 * 1000 * 1000, last SWITCH;
|
|
/^p$/ and $arg *= 1000 * 1000 * 1000 * 1000 * 1000, last SWITCH;
|
|
/^K$/ and $arg *= 1024, last SWITCH;
|
|
/^M$/ and $arg *= 1024 * 1024, last SWITCH;
|
|
/^G$/ and $arg *= 1024 * 1024 * 1024, last SWITCH;
|
|
/^T$/ and $arg *= 1024 * 1024 * 1024 * 1024, last SWITCH;
|
|
/^P$/ and $arg *= 1024 * 1024 * 1024 * 1024 * 1024, last SWITCH;
|
|
ldie "bad unit suffix '$mod'";
|
|
}
|
|
ldie "size argument '$orig_arg' evaluating to '$arg' is not a multiple of 4K = 4096\n" if ($arg % 4096) != 0;
|
|
return $arg;
|
|
}
|
|
|
|
# DEPRECATED
|
|
#
|
|
# TST NOTE: avoid calling this function. As such it is conceptually wrong,
|
|
# because during split-brain situations, there exists a _set_ of non-unique
|
|
# primaries. I want to remove this function, but I currently can't because
|
|
# other internal software at 1&1 is depending on it.
|
|
|
|
#
|
|
# Get actual primary node from links below actual-*/ subdirs
|
|
#
|
|
sub _get_actual_primary {
|
|
my ($res) = @_;
|
|
# TST: Presence of local device takes precedence over anything else.
|
|
# This tries to workaround the most important special case of
|
|
# split-brain situations, but cannot fix the problem exhaustively.
|
|
llog "DEPRECATED: you are trying to uniquely identify an actual primary hostname (as seen from host $host resource $res), but this is conceptually wrong because in split-brain situations there may exist multiple ones. Use view-is-primary instead. That would be safe.\n";
|
|
my $name = get_link("$mars/resource-$res/device-$real_host", 1);
|
|
my $dev = "/dev/mars/$name";
|
|
return $real_host if -b $dev;
|
|
# The following old code is CONCEPTUALLY WRONG for split-brain situations (see NOTE above)
|
|
my @primary_links = glob("$mars/resource-$res/actual-*/is-primary");
|
|
my $primary;
|
|
foreach my $link (@primary_links) {
|
|
if (my $val = get_link($link)) {
|
|
$primary = ($link =~ qr%.*actual-([^/]+)/is-primary%)[0];
|
|
last;
|
|
# Note: if there are more than one 'is-primary' links (an insane state anyway),
|
|
# the first 'is-primary' link is selected. Other links are ignored.
|
|
}
|
|
}
|
|
return $primary;
|
|
}
|
|
|
|
sub _get_designated_primary {
|
|
my ($res) = @_;
|
|
return get_link("$mars/resource-$res/primary");
|
|
}
|
|
|
|
sub get_peers {
|
|
my ($res) = @_;
|
|
my @list = glob("$mars/resource-$res/data-*");
|
|
return map { $_ =~ s:$mars/resource-$res/data-::; $_ } @list;
|
|
}
|
|
|
|
sub __conv_tv {
|
|
my ($tv_sec, $tv_nsec) = @_;
|
|
if (defined($tv_nsec)) {
|
|
$tv_nsec = ".$tv_nsec";
|
|
} else {
|
|
$tv_nsec = "";
|
|
}
|
|
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(int($tv_sec));
|
|
return "$tv_sec$tv_nsec" unless defined($sec);
|
|
return sprintf("%04d-%02d-%02d %02d:%02d:%02d%s", $year+1900, $mon + 1, $mday, $hour, $min, $sec, $tv_nsec);
|
|
}
|
|
|
|
sub __conv_errno {
|
|
my ($txt, $error) = @_;
|
|
return "$txt$error" if !defined($error) || ($error <= 0);
|
|
$! = $error;
|
|
my $res = "${txt}${error}[$!]";
|
|
$! = 0;
|
|
return $res;
|
|
}
|
|
|
|
sub _replace_timestamps {
|
|
my ($txt, $omit_nsec) = @_;
|
|
if (defined($omit_nsec) && $omit_nsec) {
|
|
$txt =~ s:([0-9]{9,99})\.([0-9]{9}):__conv_tv($1):ge;
|
|
} else {
|
|
$txt =~ s:([0-9]{9,99})\.([0-9]{9}):__conv_tv($1,$2):ge;
|
|
}
|
|
$txt =~ s:((error|status)\s*=?\s*-)([0-9]+):__conv_errno($1,$3):ge;
|
|
return $txt;
|
|
}
|
|
|
|
sub _get_text {
|
|
my ($glob, $regex, $do_print, $get_count) = @_;
|
|
my $text = "";
|
|
my $count = 0;
|
|
foreach my $path (glob($glob)) {
|
|
open(IN, "<", $path) or next;
|
|
while (my $line = <IN>) {
|
|
# use regex e.g. for fetching only errors and warnings
|
|
if (!$regex || $line =~ $regex) {
|
|
$line = _replace_timestamps($line);
|
|
$count++;
|
|
if ($do_print) {
|
|
print $line;
|
|
llog($line);
|
|
} else {
|
|
$text .= $line;
|
|
}
|
|
}
|
|
}
|
|
close(IN);
|
|
}
|
|
return $count if defined($get_count) && $get_count;
|
|
return $text;
|
|
}
|
|
|
|
sub get_error_text {
|
|
my ($cmd, $res) = @_;
|
|
my $text = _get_text("$mars/resource-$res/logstatus-$host.status", "m/^(err|warn)/i", 0);
|
|
return $text;
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# helpers
|
|
|
|
sub _trigger {
|
|
system("(echo 2 > /proc/sys/mars/trigger) >/dev/null 2>&1");
|
|
}
|
|
|
|
sub _switch {
|
|
my ($cmd, $res, $path, $on) = @_;
|
|
my $src = $on ? "1" : "0";
|
|
$path = correct_path($path);
|
|
my $old = get_link($path);
|
|
if ($old && $old eq $src) {
|
|
lprint "${cmd} on resource $res is already activated\n" if $cmd;
|
|
return;
|
|
}
|
|
set_link($src, $path);
|
|
lprint "successfully started ${cmd} on resource $res\n" if $cmd;
|
|
}
|
|
|
|
sub _writable {
|
|
my ($path, $on) = @_;
|
|
my $oldmode = (lstat $path)[2] & 0700;
|
|
my $newmode = $on ? $oldmode | 0200 : $oldmode & ~0200;
|
|
lprint "chmod '$path' $oldmode $newmode";
|
|
chmod($newmode, $path) == 1 or ldie "cannot chmod '$path'\n";
|
|
}
|
|
|
|
sub _get_ip {
|
|
check_id($host);
|
|
my $ip_path = "$mars/ips/ip-$host";
|
|
if (my $from_link = get_link($ip_path, 2)) {
|
|
lprint_stderr "Using IP '$from_link' from '$ip_path'\n" if $verbose;
|
|
return $from_link;
|
|
}
|
|
chomp (my @info = `/sbin/ip addr show`);
|
|
my $interface = "";
|
|
foreach my $line (@info) {
|
|
$interface = $1 if $line =~ m#^[0-9]+:\s([a-zA-Z_0-9]+):#;
|
|
next if $interface eq "lo";
|
|
if ($line =~ m#\sinet\s(\d+\.\d+\.\d+\.\d+)#) {
|
|
my $from_if = $1;
|
|
lprint_stderr "Using IP '$from_if' from interface '$interface'\n";
|
|
return $from_if;
|
|
}
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
sub _fake_versionlink {
|
|
my ($basedir, $log_nr, $primary) = @_;
|
|
my $make_count = 0;
|
|
for (my $rounds = 2; $rounds > 0 && $log_nr > 0; $rounds--) {
|
|
my $new_version = sprintf("$basedir/version-%09d-$host", $log_nr);
|
|
my $pri_version = sprintf("$basedir/version-%09d-$primary", $log_nr);
|
|
if ($primary eq $host) {
|
|
ldie "Cannot fake my own version link '$new_version'\n";
|
|
}
|
|
my $pri_link = get_link($pri_version, 1);
|
|
if ($pri_link) {
|
|
lprint "creating new version symlink '$new_version' -> '$pri_link'\n";
|
|
set_link($pri_link, $new_version);
|
|
$make_count++;
|
|
} elsif ($rounds == 2) {
|
|
lwarn "cannot create new version symlink '$new_version'\n";
|
|
} else {
|
|
lprint "cannot create new version symlink '$new_version'\n";
|
|
}
|
|
$log_nr--;
|
|
}
|
|
lwarn "cannot create faked versionlink\n" if !$make_count;
|
|
}
|
|
|
|
sub _set_replaylink {
|
|
my ($basedir, $log_nr, $primary, $msg) = @_;
|
|
$msg = " -- THIS IS EXTREMELY RISKY -- any inconsistencies are on your own!" unless defined($msg);
|
|
ldie "no designated primary defined\n" unless ($primary && $primary ne "(none)");
|
|
my $rep_path = "$basedir/replay-$host";
|
|
my $rep_val = sprintf("log-%09d-$primary,0,0", $log_nr);
|
|
lprint "creating new replaylink '$rep_path' -> '$rep_val'\n";
|
|
set_link($rep_val, $rep_path);
|
|
|
|
if ($log_nr > 1) {
|
|
_fake_versionlink($basedir, $log_nr - 1, $primary);
|
|
} else {
|
|
my $initial;
|
|
for (;;) {
|
|
$initial = get_link("$basedir/version-000000001-$primary", 1);
|
|
last if $initial;
|
|
sleep_timeout();
|
|
}
|
|
set_link($initial, "$basedir/version-000000001-$host");
|
|
}
|
|
set_link("$log_nr$msg", "$basedir/skip-check-$host");
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# commands
|
|
|
|
sub ignore_cmd {
|
|
my ($cmd, $res) = @_;
|
|
lprint "ignoring command '$cmd' on resource '$res'\n";
|
|
}
|
|
|
|
sub senseless_cmd {
|
|
my ($cmd, $res) = @_;
|
|
lprint "command '$cmd' makes no sense with MARS (ignoring on resource '$res')\n";
|
|
}
|
|
|
|
sub forbidden_cmd {
|
|
my ($cmd, $res) = @_;
|
|
ldie "command '$cmd' on resource '$res' cannot be used with MARS (migth affect too many hosts, lead to undesired consequences)\n";
|
|
}
|
|
|
|
sub nyi_cmd {
|
|
my ($cmd, $res) = @_;
|
|
ldie "command '$cmd' on resource '$res' is not yet implemented\n";
|
|
}
|
|
|
|
sub is_module_loaded {
|
|
return -d "/proc/sys/mars";
|
|
}
|
|
|
|
sub set_connect_pref_list {
|
|
my ($cmd, $res, $list) = @_;
|
|
check_res_member($cmd, $res);
|
|
my $dst = "$mars/resource-$res/connect-$host";
|
|
if ($cmd =~ m/^get-/) {
|
|
my $value = get_link($dst);
|
|
lprint "$value\n";
|
|
return;
|
|
}
|
|
check_id_list($list, 1);
|
|
set_link($list, $dst);
|
|
}
|
|
|
|
sub emergency_limit_res {
|
|
my ($cmd, $res, $value) = @_;
|
|
my $dst = "$mars/resource-$res/todo-$host/emergency-limit";
|
|
if ($cmd =~ m/^get-/) {
|
|
my $value = get_link($dst);
|
|
lprint "$value\n";
|
|
return;
|
|
}
|
|
ldie "percent argument '$value' isn't numeric\n" unless $value =~ m/^[0-9]+$/;
|
|
ldie "percent argument '$value' isn't between 0 and 100%\n" unless ($value >= 0 && $value <= 100);
|
|
set_link($value, $dst);
|
|
}
|
|
|
|
sub set_link_cmd {
|
|
my $cmd = shift;
|
|
for (;;) {
|
|
my $src = shift || last;
|
|
if ($cmd =~ m/^get-/) {
|
|
my $value = get_link($src);
|
|
lprint "$value\n";
|
|
next;
|
|
}
|
|
my $dst = shift || ldie "you did not supply a symlink destination for source '$src'\n";
|
|
ldie "symlink target '$dst' is not an absolute path\n" unless $dst =~ m:^/:;
|
|
check_userspace($dst);
|
|
my $dir = `dirname "$dst"` or ldie "path '$dst' has no dirname\n";
|
|
chomp $dir;
|
|
ldie "directory '$dir' does not exist\n" unless -d $dir;
|
|
set_link($src, $dst);
|
|
}
|
|
}
|
|
|
|
sub set_sync_pref_list {
|
|
my ($cmd, $list) = @_;
|
|
my $todo_dir = "$mars/defaults-$host";
|
|
ldie "directory '$todo_dir' does not exist\n" unless -d $todo_dir;
|
|
my $dst = "$todo_dir/sync-pref-list";
|
|
if ($cmd =~ m/^get-/) {
|
|
my $value = get_link($dst);
|
|
lprint "$value\n";
|
|
return;
|
|
}
|
|
set_link($list, $dst);
|
|
}
|
|
|
|
sub set_sync_limit_value {
|
|
my ($cmd, $value) = @_;
|
|
my $todo_dir = "$mars/defaults-$host";
|
|
ldie "directory '$todo_dir' does not exist\n" unless -d $todo_dir;
|
|
my $dst = "$todo_dir/sync-limit";
|
|
if ($cmd =~ m/^get-/) {
|
|
my $value = get_link($dst);
|
|
lprint "$value\n";
|
|
return;
|
|
}
|
|
set_link($value, $dst);
|
|
}
|
|
|
|
sub create_uuid {
|
|
my ($cmd) = @_;
|
|
my $old_uuid = get_link("$mars/uuid", 2);
|
|
ldie "Cluster was already created with uuid='$old_uuid'. " .
|
|
"For safety reasons, no override is possible at marsadm level.\n" if $old_uuid;
|
|
my $uuid = `echo -n \$(hostname) \$(date)`;
|
|
set_link($uuid, "$mars/uuid");
|
|
finish_links(); # opportunity for errors => don't continue
|
|
lprint "New cluster UUID is '$uuid'\n";
|
|
}
|
|
|
|
sub _create_cluster {
|
|
my ($cmd) = @_;
|
|
ldie "The $mars directory does not exist.\n" unless -d $mars;
|
|
create_uuid(@_) if $cmd eq "create-cluster";
|
|
system("mkdir $mars/ips") unless -d "$mars/ips";
|
|
system("mkdir $mars/userspace") unless -d "$mars/userspace";
|
|
system("mkdir $mars/defaults") unless -d "$mars/defaults";
|
|
system("mkdir $mars/defaults-$host") unless -d "$mars/defaults-$host";
|
|
set_link("0", "$mars/defaults-$host/sync-limit");
|
|
set_link("(none)", "$mars/defaults-$host/sync-pref-list");
|
|
system("mkdir $mars/todo-global") unless -d "$mars/todo-global";
|
|
mkdir("$mars/actual-$host") unless -d "$mars/actual-$host";
|
|
set_link($ip, "$mars/ips/ip-$host");
|
|
set_link("1", "$mars/todo-global/deleted-$host");
|
|
}
|
|
|
|
sub create_cluster {
|
|
my ($cmd, $peer) = @_;
|
|
ldie "cluster is already created\n" if !$force && -d "$mars/ips";
|
|
ldie "mars module is loaded, please unload first\n" if is_module_loaded();
|
|
_create_cluster(@_);
|
|
}
|
|
|
|
sub _run_rsync {
|
|
my ($cmd) = @_;
|
|
my $cycle = 0;
|
|
my $status = 0;
|
|
# Repeat the action because some symlinks might be updated (or even vanish)
|
|
# when the peer is actively running. There seems to exist no rsync option
|
|
# for ignoring all of these errors.
|
|
do {
|
|
$status = system($cmd);
|
|
} while ($status != 0 && $status != 24 && $cycle++ < 3);
|
|
ldie "Cannot get remote symlink tree via rsync, status=$status\n" if ($status && $status != 24);
|
|
}
|
|
|
|
sub join_cluster {
|
|
my ($cmd, $peer) = @_;
|
|
ldie "Cannot join myself (peer='$peer', host='$host')\n" if $peer eq $host;
|
|
ldie "Directory $mars is missing\n" unless -d $mars;
|
|
ldie "A valid tree signature '$mars/tree-$host' already exists, thus it appears you are already a cluster member! This cannot be overridden, other by using a freshly created /mars/ filesystem.\n" if -l "$mars/tree-$host";
|
|
ldie "A cluster UUD '$mars/uuid' already exists, thus it appears you are already a cluster member! This cannot be overridden, other by using a freshly created /mars/ filesystem.\n" if -l "$mars/uuid";
|
|
if (glob("$mars/resource-*") or glob("$mars/ips/*")) {
|
|
ldie "Sorry, some resources already exist!\nThis is dangerous!\nIf you are sure that no resource clash is possible, re-invoke this command with '--force' option\n" unless $force;
|
|
}
|
|
ldie "mars module is loaded, please unload first\n" if is_module_loaded();
|
|
lprint "joining cluster via rsync (peer='$peer')\n";
|
|
# check connection
|
|
system("ssh $peer uname -a") == 0 or ldie "oops, no connection to $peer ...\n";
|
|
unless ($dry_run) {
|
|
_run_rsync("rsync --recursive --links --max-size=1 -v $peer:$mars/ $mars/");
|
|
}
|
|
# check uniqness of IPs
|
|
foreach my $other_ip_path (glob("$mars/ips/*")) {
|
|
my $other_ip = get_link($other_ip_path, 1);
|
|
ldie "New IP '$ip' already exists at '$other_ip_path'\n" if $ip eq $other_ip;
|
|
}
|
|
_create_cluster(@_);
|
|
finish_links();
|
|
unless ($dry_run) {
|
|
_run_rsync("rsync --recursive --links -v $mars/ips/ $peer:$mars/ips/");
|
|
}
|
|
}
|
|
|
|
sub leave_cluster {
|
|
my ($cmd) = @_;
|
|
ldie "mars kernel module is not loaded. This is needed for communication with some other hosts!\n" if !is_module_loaded();
|
|
my $check = "/mars/resource-*/data-$host";
|
|
ldie "I am member of some resources\n" if glob($check) && !$force;
|
|
wait_cluster($cmd) unless $force;
|
|
foreach my $path (glob("$mars/actual-*/*-$host")) {
|
|
_create_delete($path);
|
|
}
|
|
_create_delete("$mars/ips/ip-$host");
|
|
finish_links();
|
|
wait_cluster($cmd) unless $force;
|
|
foreach my $path (glob("$mars/actual-*/*-$host")) {
|
|
_create_delete($path);
|
|
}
|
|
_create_delete("$mars/todo-global/deleted-$host");
|
|
finish_links();
|
|
wait_cluster($cmd) unless $force;
|
|
while (-f "$mars/ips/ip-$host" && $timeout >= 0) {
|
|
sleep_timeout(3, 1);
|
|
}
|
|
system("rmmod mars") if $host eq $real_host;
|
|
foreach my $path (glob("$mars/{,resource-*/}{todo,actual}-*/*-$host")) {
|
|
unlink($path);
|
|
}
|
|
foreach my $path (glob("$mars/{,resource-*/}{todo,actual}-$host")) {
|
|
rmdir($path); # at least try it
|
|
}
|
|
}
|
|
|
|
sub create_res {
|
|
my ($cmd, $res, $dev, $appear, $size_arg) = @_;
|
|
my $create = ($cmd eq "create-resource");
|
|
|
|
ldie "undefined device or size argument\n" unless $dev;
|
|
$appear = $res if !$appear;
|
|
check_id($appear) if $appear;
|
|
|
|
my $resdir = "$mars/resource-$res";
|
|
if ($create) {
|
|
if (-d $resdir) {
|
|
lwarn "resource directory '$res' already exists\n";
|
|
my @host_list = glob("$resdir/replay-*");
|
|
if (@host_list) {
|
|
my $h_list = join(',', map({ $_ =~ s:.*/replay-::;} (@host_list)));
|
|
lwarn "DANGER: hosts '$h_list' are already member of resource '$res'.\n";
|
|
ldie "REFUSING to trash your resource!\n" unless $force;
|
|
}
|
|
}
|
|
lprint "creating new resource '$res'\n";
|
|
} else {
|
|
if ( -l "$resdir/data-$host") {
|
|
lwarn "resource '$res' has been already joined -- this is dangerous!\n";
|
|
ldie "refusing dangerous operation\n" unless $force;
|
|
} else {
|
|
lprint "joining to existing resource '$res'\n";
|
|
}
|
|
}
|
|
|
|
my $size = 0;
|
|
if (-b $dev) {
|
|
ldie "block device '$dev' must be an absolute path starting with '/'\n" unless $dev =~ m/^\//;
|
|
use Fcntl 'SEEK_END', 'O_RDONLY', 'O_RDWR', 'O_EXCL';
|
|
my $flags = O_RDWR | O_EXCL;
|
|
if ($force) {
|
|
$flags = O_RDONLY;
|
|
}
|
|
sysopen(TEST, $dev, $flags) or ldie "cannot open device '$dev' for exclusive rw access\n";
|
|
$size = sysseek(TEST, 0, SEEK_END);
|
|
close(TEST);
|
|
lprint "block device '$dev': determined size = $size bytes\n";
|
|
if ($size_arg) {
|
|
my $new_size = get_size($size_arg);
|
|
ldie "size argument '$size_arg' is smaller than device size '$size'\n" unless $new_size <= $size;
|
|
lprint "reducing size from $size to $new_size\n";
|
|
$size = $new_size;
|
|
}
|
|
} else {
|
|
$size = get_size($dev);
|
|
if ($size > 0) {
|
|
$dev = "";
|
|
} else {
|
|
ldie "bad parameter '$dev': must be either a block device name, or size followed by k or m or g or t\n";
|
|
}
|
|
}
|
|
|
|
ldie "implausible size $size" unless $size > 4096 * 16; # smaller floppies should not exist ;)
|
|
|
|
my $primary;
|
|
my $replay_nr = -1;
|
|
if ($create) {
|
|
mkdir($resdir);
|
|
ldie "could not create resource '$res'\n" unless -d $resdir;
|
|
set_link($size, "$resdir/size");
|
|
} else { # join
|
|
ldie "resource '$res' does not exist\n" unless -d $resdir;
|
|
my $res_size = get_link("$mars/resource-$res/size");
|
|
if ($size < $res_size) {
|
|
lwarn "size of new device is only $size, but should be $res_size\n";
|
|
ldie "refusing to join due to bad size\n" unless $force;
|
|
} elsif ($size > $res_size) {
|
|
lprint "Your physical device has size $size, which is larger than the logical resource size $res_size.\n";
|
|
lprint "This does no harm, but you are wasting some space.\n";
|
|
}
|
|
$primary = _get_designated_primary($res);
|
|
ldie "Sorry, joining is only possible if a designated primary exists.\n" if $primary eq "(none)";
|
|
ldie "implausible state: I ($host) am already designated primary of resource '$res' which I just wanted to join\n" if $primary eq $host;
|
|
ldie "my ip '$ip' is not registered -- please run 'join-cluster' first\n" unless -l "$mars/ips/ip-$host";
|
|
check_sync_startable(@_);
|
|
my $replay = get_link("$resdir/replay-$primary");
|
|
if ($replay =~ m/^log-([0-9]+)-/) {
|
|
$replay_nr = $1;
|
|
} else {
|
|
ldie "cannot determine current logfile number.\n";
|
|
}
|
|
}
|
|
|
|
# check for uniqeness of $appear
|
|
if ($appear) {
|
|
foreach my $old_dev (glob("$mars/resource-*/device-$host")) {
|
|
$old_dev =~ m:/resource-([^/]+)/:;
|
|
next unless defined($1);
|
|
my $old_res = $1;
|
|
next if $old_res eq $res;
|
|
my $old_name = get_link($old_dev);
|
|
if ($old_name eq $appear) {
|
|
if ( -l "$mars/resource-$old_res/data-$host") {
|
|
ldie "device '/dev/mars/$old_name' is already present in joined resource '$old_res'\n";
|
|
} else {
|
|
lwarn "device '/dev/mars/$old_name' is already present in another unjoined resource '$old_res' -- this does no harm, but may be confusing.\n";
|
|
}
|
|
}
|
|
}
|
|
# warn if devices are named differently throughout the cluster
|
|
foreach my $old_dev (glob("$resdir/device-*")) {
|
|
my $old_name = get_link($old_dev);
|
|
if ($old_name ne $appear) {
|
|
$old_dev =~ m:/device-(.+)$:;
|
|
my $old_host = $1;
|
|
lwarn "your name '/dev/mars/$appear' differs from '/dev/mars/$old_name' on host '$old_host'.";
|
|
lwarn "this does no harm, but may be confusing.";
|
|
}
|
|
}
|
|
}
|
|
|
|
# check for remains from former incidents
|
|
foreach my $remain (glob("$resdir/{log,version}-*-$host")) {
|
|
if (!$create) {
|
|
$remain =~ m/-([0-9]+)-$host/;
|
|
my $nr = $1;
|
|
next if $nr < $replay_nr;
|
|
}
|
|
lwarn "Resource directory has some old remains like '$remain'.\n";
|
|
lwarn "First cleanup.\n";
|
|
my $extra_op = $create ? "delete-resource" : "log-purge-all";
|
|
lwarn "If you really want to $cmd, run 'marsadm $extra_op' first.\n";
|
|
ldie "REFUSING $cmd\n" unless $force;
|
|
}
|
|
|
|
my $file = "$resdir/data-$host";
|
|
if (!$dev) {
|
|
lwarn "file '$file' already exists - reusing\n" if -l $file;
|
|
lprint "setup sparse file '$file' with size $size\n";
|
|
open(OUT, ">>", $file) or ldie "could not open '$file'\n";
|
|
truncate(OUT, $size) or ldie "truncate to size $size failed\n";
|
|
close OUT;
|
|
} else {
|
|
lprint "using existing device '$dev'\n";
|
|
set_link($dev, $file);
|
|
}
|
|
|
|
if ($appear) {
|
|
lprint "resource '$res' will appear as local device '/dev/mars/$appear'\n";
|
|
set_link($appear, "$resdir/device-$host");
|
|
}
|
|
|
|
mkdir("$resdir/userspace") unless -d "$resdir/userspace";
|
|
mkdir("$resdir/defaults") unless -d "$resdir/defaults";
|
|
mkdir("$resdir/defaults-$host");
|
|
mkdir("$resdir/local-$host");
|
|
mkdir("$resdir/actual-$host");
|
|
my $todo = "$resdir/todo-$host";
|
|
mkdir($todo);
|
|
set_link("1", "$todo/attach");
|
|
set_link("1", "$todo/connect");
|
|
set_link("1", "$todo/sync");
|
|
set_link("1", "$todo/allow-replay");
|
|
unlink("$resdir/syncstatus-$host");
|
|
|
|
if ($create) {
|
|
set_link($host, "$resdir/primary");
|
|
set_link($size, "$resdir/syncstatus-$host");
|
|
my $startnr = get_link("$resdir/maxnr", 2);
|
|
if (defined($startnr) && $startnr ne "" && $startnr > 0) {
|
|
$startnr += 1000;
|
|
} else {
|
|
$startnr = 1;
|
|
}
|
|
my $fmt_old = sprintf("%09d", $startnr - 1);
|
|
my $fmt = sprintf("%09d", $startnr);
|
|
set_link("log-$fmt-$host,0,0", "$resdir/replay-$host");
|
|
system("touch $resdir/log-$fmt-$host") unless $dry_run;
|
|
my $old_fake = "00000000000000000000000000000000,log-$fmt_old-$host,0";
|
|
set_link("$old_fake:", "$resdir/version-$fmt_old-$host");
|
|
set_link("00000000000000000000000000000000,log-$fmt-$host,0:$old_fake", "$resdir/version-$fmt-$host");
|
|
set_link("$startnr", "$resdir/skip-check-$host") if $startnr > 1;
|
|
set_link("$startnr", "$resdir/maxnr");
|
|
finish_links();
|
|
lprint "successfully created resource '$res'\n";
|
|
} else {
|
|
_set_replaylink($resdir, $replay_nr, $primary, "");
|
|
set_link("0", "$resdir/syncstatus-$host");
|
|
finish_links();
|
|
lprint "successfully joined resource '$res'\n";
|
|
}
|
|
}
|
|
|
|
sub leave_res_phase0 {
|
|
my ($cmd, $res) = @_;
|
|
check_not_primary(@_) unless $force;
|
|
my $errors = 0;
|
|
foreach my $tmp (glob("$mars/resource-$res/todo-$host/*")) {
|
|
my $status = get_link($tmp, 2);
|
|
if ($status) {
|
|
lwarn "switch '$tmp' is not off\n";
|
|
$errors++;
|
|
}
|
|
}
|
|
foreach my $tmp (glob("$mars/resource-$res/actual-$host/{is-,logfile-}*")) {
|
|
my $status = get_link($tmp);
|
|
if ($status) {
|
|
lwarn "running status '$tmp' is not off\n";
|
|
$errors++;
|
|
}
|
|
}
|
|
if (!$force) {
|
|
check_status($cmd, $res, "is-attached", 0, 0, 1);
|
|
ldie "there were $errors errors.\n" if $errors;
|
|
}
|
|
}
|
|
|
|
sub leave_res_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
_create_delete("$mars/resource-$res/replay-$host");
|
|
_create_delete("$mars/resource-$res/data-$host");
|
|
_create_delete("$mars/resource-$res/syncstatus-$host");
|
|
my $syncpos = "$mars/resource-$res/syncpos-$host";
|
|
_create_delete($syncpos) if -l $syncpos;
|
|
my $skip_check = "$mars/resource-$res/skip-check-$host";
|
|
_create_delete($skip_check) if -l $skip_check;
|
|
my $vstatus = "$mars/resource-$res/verifystatus-$host";
|
|
_create_delete($vstatus) if -l $vstatus;
|
|
_create_delete("$mars/resource-$res/device-$host");
|
|
_create_delete("$mars/resource-$res/actsize-$host");
|
|
foreach my $dir (glob("$mars/resource-$res/*-$host/")) {
|
|
foreach my $tmp (glob("${dir}*")) {
|
|
_create_delete($tmp);
|
|
}
|
|
_create_delete($dir);
|
|
}
|
|
finish_links();
|
|
}
|
|
|
|
# wait for deletions (avoid races with following commands)
|
|
sub leave_res_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
_wait_delete();
|
|
$force = 0; # this would be too dangerous
|
|
log_purge_res(@_);
|
|
finish_links();
|
|
_wait_delete();
|
|
system("rm -f $mars/resource-$res/log-*") if $host eq $real_host;
|
|
}
|
|
|
|
sub delete_res {
|
|
my ($cmd, $res) = @_;
|
|
my $basedir = "$mars/resource-$res";
|
|
# preconditions
|
|
if (! -d $basedir) {
|
|
lprint "resource directory '$basedir' does no longer exist.\n";
|
|
return;
|
|
}
|
|
my @host_list = glob("$basedir/replay-*");
|
|
my $cnt = scalar(@host_list);
|
|
if ($cnt > 0) {
|
|
my $h_list = join(',', map({ $_ =~ s:.*/replay-::;} (@host_list)));
|
|
ldie "resource '$res' is not empty: first remove the hosts '$h_list' via leave-resource\n" unless $force;
|
|
lwarn "BRUTE FORCE resource destruction: '$res' has $cnt members ($h_list) THESE ARE FINALLY TRASHED right now -- you are RESPONSIBLE for any subsequent problems.\n";
|
|
}
|
|
for my $path (`find $basedir/* | sort -r`) {
|
|
chomp $path;
|
|
next if $path =~ m:/(maxnr$|\.deleted-):;
|
|
_create_delete($path);
|
|
}
|
|
finish_links();
|
|
_wait_delete();
|
|
}
|
|
|
|
sub logrotate_res {
|
|
my ($cmd, $res) = @_;
|
|
check_primary(@_) unless $force;
|
|
my @paths = glob("$mars/resource-$res/log-*-$host") or ldie "cannot find any logfiles\n";
|
|
@paths = sort(@paths);
|
|
my $last = pop(@paths);
|
|
if (-z $last) {
|
|
lprint "an empty logfile '$last' already exists, nothing to do.\n" if $verbose;
|
|
return;
|
|
}
|
|
my $nr = $last;
|
|
$nr =~ s/^.*log-([0-9]+)-.+$/$1/;
|
|
my $next = sprintf("$mars/resource-$res/log-%09d-$host", $nr + 1);
|
|
ldie "logfile '$next' already exists\n" if -e $next;
|
|
system("touch $next") unless $dry_run;
|
|
my $startnr = get_link("$mars/resource-$res/maxnr", 1);
|
|
$startnr = $nr + 1 if ($nr >= $startnr);
|
|
set_link("$startnr", "$mars/resource-$res/maxnr");
|
|
}
|
|
|
|
sub _get_deletable_logfiles {
|
|
my ($cmd, $res) = @_;
|
|
my $min = -1;
|
|
my $max = -1;
|
|
my @log_paths = glob("$mars/resource-$res/log-*") or ldie "cannot find any logfiles\n";
|
|
foreach my $path (@log_paths) {
|
|
$path =~ m/\/log-([0-9]+)-/;
|
|
my $nr = $1;
|
|
$min = $nr if ($nr < $min || $min < 0);
|
|
$max = $nr if ($nr > $max || $max < 0);
|
|
}
|
|
my @paths = glob("$mars/resource-$res/replay-*") or ldie "cannot find any replay symlinks\n";
|
|
foreach my $path (@paths) {
|
|
my $target = get_link($path);
|
|
$target =~ m/^log-([0-9]+)/;
|
|
my $nr = $1;
|
|
$max = $nr if ($nr < $max || $max < 0);
|
|
}
|
|
return ($min, $max);
|
|
}
|
|
|
|
my $delete_nr = -1;
|
|
|
|
sub _create_delete {
|
|
my ($target) = @_;
|
|
ldie "cannot delete: '$target' is no absolute path\n" unless $target =~ m:^/:;
|
|
if ($delete_nr < 0) { # compute only upon first call
|
|
my @paths = glob("$mars/todo-global/delete-*");
|
|
foreach my $path (@paths) {
|
|
$path =~ m/-([0-9]+)/;
|
|
if (defined($1) && $1 > $delete_nr) {
|
|
$delete_nr = $1;
|
|
}
|
|
}
|
|
my @paths2 = glob("$mars/todo-global/deleted-*");
|
|
foreach my $path (@paths2) {
|
|
my $link = get_link($path, 1);
|
|
$link =~ m/([0-9]+)/;
|
|
if (defined($1) && $1 > $delete_nr) {
|
|
$delete_nr = $1;
|
|
}
|
|
}
|
|
}
|
|
my $new = sprintf("$mars/todo-global/delete-%09d-$real_host", ++$delete_nr);
|
|
lprint "create symlink $new -> $target\n" if $verbose;
|
|
set_link($target, $new);
|
|
}
|
|
|
|
sub _wait_delete {
|
|
return if $dry_run;
|
|
for (;;) {
|
|
my $deleted = get_link("$mars/todo-global/deleted-$real_host");
|
|
print "deleted: $deleted / $delete_nr\n";
|
|
last if $deleted >= $delete_nr;
|
|
lprint "waiting for deletions to apply locally....\n";
|
|
sleep_timeout();
|
|
}
|
|
sleep(3);
|
|
}
|
|
|
|
sub delete_file_cmd {
|
|
my $cmd = shift;
|
|
my $res = shift; # ignore this
|
|
foreach my $path (@_) {
|
|
check_userspace($path);
|
|
_create_delete($path);
|
|
}
|
|
}
|
|
|
|
sub logdelete_res {
|
|
my ($cmd, $res) = @_;
|
|
lprint "removing left-over .deleted symlinks...\n" if $verbose;
|
|
my $start_time = mars_time();
|
|
foreach my $leftlink (glob("$mars/{,resource-$res/}{,*/}.deleted-*")) {
|
|
my $stamp = get_link_stamp($leftlink);
|
|
next unless $stamp + 3600 * 24 < $start_time;
|
|
lprint " unlink '$leftlink'\n" if $verbose;
|
|
unlink($leftlink);
|
|
}
|
|
my @paths = glob("$mars/resource-$res/log-*") or ldie "cannot find any logfiles\n";
|
|
@paths = sort(@paths);
|
|
my ($min_deletable, $max_deletable) = _get_deletable_logfiles(@_);
|
|
lprint "min deletable logfile number: $min_deletable\n" if $verbose;
|
|
lprint "min non-deletable logfile number: $max_deletable\n" if $verbose;
|
|
if ($min_deletable >= $max_deletable) {
|
|
lprint "no logfiles are deletable.\n" if $verbose;
|
|
return;
|
|
}
|
|
if ($cmd ne "log-delete-all") {
|
|
$max_deletable = $min_deletable + 1; # delete only the first one
|
|
}
|
|
|
|
my $nr = 0;
|
|
for (;;) {
|
|
my $first = shift(@paths);
|
|
last unless $first;
|
|
$nr = $first;
|
|
$nr =~ s/^.*log-([0-9]+)-.+$/$1/;
|
|
next unless $nr < $max_deletable;
|
|
|
|
lprint "chosen '$first' for deletion\n" if $verbose;
|
|
|
|
_create_delete($first);
|
|
}
|
|
lprint "removing left-over version symlinks...\n" if $verbose;
|
|
foreach my $versionlink (glob("$mars/resource-$res/version-*")) {
|
|
my $nrv = $versionlink;
|
|
$nrv =~ s/^.*\/version-([0-9]+)-.+$/$1/;
|
|
# we need at least one more version link than logfiles for consistency checks
|
|
next unless $nrv < $max_deletable - 1;
|
|
_create_delete($versionlink);
|
|
}
|
|
}
|
|
|
|
sub attach_res_phase0 {
|
|
my ($cmd, $res) = @_;
|
|
return if $force;
|
|
my $detach = ($cmd eq "detach");
|
|
if ($detach) {
|
|
my $device_in_use = get_link("$mars/resource-$res/actual-$host/open-count", 1);
|
|
if ($device_in_use) {
|
|
my $name = get_link("$mars/resource-$res/device-$host");
|
|
my $dev = "/dev/mars/$name";
|
|
ldie "device '$dev' is in use\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub attach_res_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
my $detach = ($cmd eq "detach");
|
|
my $path = "$mars/resource-$res/todo-$host/attach";
|
|
_switch($cmd, $res, $path, !$detach);
|
|
}
|
|
|
|
sub attach_res_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
my $detach = ($cmd eq "detach");
|
|
return if $force;
|
|
check_status($cmd, $res, "is-attached", $detach ? 0 : 1, 1);
|
|
if ($detach) {
|
|
check_mars_device($cmd, $res, 1, 1);
|
|
check_status($cmd, $res, "is-replaying", 0, 1);
|
|
check_status($cmd, $res, "is-syncing", 0, 1);
|
|
}
|
|
}
|
|
|
|
sub fetch_global_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/disconnect|pause/);
|
|
my @paths = glob("$mars/resource-$res/todo-*/");
|
|
for my $path (@paths) {
|
|
_switch($cmd, $res, "$path/connect", !$pause);
|
|
}
|
|
}
|
|
|
|
sub fetch_local_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/disconnect|pause/);
|
|
my $path = "$mars/resource-$res/todo-$host/connect";
|
|
_switch($cmd, $res, $path, !$pause);
|
|
}
|
|
|
|
sub pause_sync_global_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/pause/);
|
|
check_sync_startable(@_) if !$pause;
|
|
my @paths = glob("$mars/resource-$res/todo-*/");
|
|
for my $path (@paths) {
|
|
_switch($cmd, $res, "$path/sync", !$pause);
|
|
}
|
|
}
|
|
|
|
sub pause_sync_local_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/pause/);
|
|
check_sync_startable(@_) if !$pause;
|
|
my $path = "$mars/resource-$res/todo-$host/sync";
|
|
_switch($cmd, $res, $path, !$pause);
|
|
}
|
|
|
|
sub pause_replay_global_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/pause/);
|
|
my @paths = glob("$mars/resource-$res/todo-*/");
|
|
for my $path (@paths) {
|
|
_switch($cmd, $res, "$path/replay", !$pause);
|
|
}
|
|
}
|
|
|
|
sub pause_replay_local_res {
|
|
my ($cmd, $res) = @_;
|
|
my $pause = ($cmd =~ m/pause/);
|
|
my $path = "$mars/resource-$res/todo-$host/replay";
|
|
_switch($cmd, $res, $path, !$pause);
|
|
}
|
|
|
|
sub up_res_phase0 {
|
|
my ($cmd, $res) = @_;
|
|
my $down = ($cmd eq "down");
|
|
if ($down) {
|
|
attach_res_phase0("detach", $res);
|
|
} else {
|
|
attach_res_phase0("attach", $res);
|
|
}
|
|
}
|
|
|
|
sub up_res_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
my $down = ($cmd eq "down");
|
|
if ($down) {
|
|
pause_replay_local_res("pause-replay-local", $res);
|
|
pause_sync_local_res("pause-sync-local", $res);
|
|
fetch_local_res("pause-fetch", $res);
|
|
attach_res_phase1("detach", $res);
|
|
} else {
|
|
attach_res_phase1("attach", $res);
|
|
fetch_local_res("resume-fetch-local", $res);
|
|
pause_sync_local_res("resume-sync-local", $res);
|
|
pause_replay_local_res("resume-replay-local", $res);
|
|
}
|
|
}
|
|
|
|
sub up_res_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
my $down = ($cmd eq "down");
|
|
if ($down) {
|
|
attach_res_phase2("detach", $res);
|
|
} else {
|
|
attach_res_phase2("attach", $res);
|
|
}
|
|
}
|
|
|
|
sub set_replay_res {
|
|
my ($cmd, $res, $new_nr) = @_;
|
|
if (!$new_nr || $new_nr <= 0) {
|
|
ldie "you must supply a numeric logfile number as third argument.\n";
|
|
}
|
|
check_not_primary(@_);
|
|
check_todo($cmd, $res, "replay", 0, 0);
|
|
my $replaylink = "$mars/resource-$res/replay-$host";
|
|
my $old_val = get_link($replaylink);
|
|
my $old_nr = $old_val;
|
|
$old_nr =~ s/log-([0-9]+)-.*/$1/;
|
|
ldie "old log number '$old_nr' is wrong\n" unless $old_nr > 0;
|
|
if ($new_nr > $old_nr) {
|
|
lwarn "you try to skip logfile numbers from $old_nr to $new_nr, are you sure?\n";
|
|
ldie "you would need --force if you really know what you are doing.\n" unless $force;
|
|
}
|
|
my $primary = _get_designated_primary($res);
|
|
_set_replaylink("$mars/resource-$res", $new_nr, $primary);
|
|
}
|
|
|
|
sub fake_sync_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
my $path = "$mars/resource-$res/todo-$host/sync";
|
|
_switch($cmd, $res, $path, 0);
|
|
}
|
|
|
|
sub fake_sync_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
check_status($cmd, $res, "is-syncing", 0, 1);
|
|
}
|
|
|
|
sub fake_sync_phase3 {
|
|
my ($cmd, $res) = @_;
|
|
my $size = get_link("$mars/resource-$res/size");
|
|
my $target = "$mars/resource-$res/syncstatus-$host";
|
|
set_link($size, $target);
|
|
}
|
|
|
|
sub _primary_res {
|
|
my ($res, $new, $old) = @_;
|
|
my $pri = "$mars/resource-$res/primary";
|
|
set_link($new, $pri);
|
|
lprint "designated primary changed from '$old' to '$new'\n";
|
|
}
|
|
|
|
# check whether primary/secondary switching is possible at all
|
|
sub primary_phase0 {
|
|
my ($cmd, $res) = @_;
|
|
ldie "cannot switch primary: mars kernel module is not loaded\n" unless ($cmd eq "secondary" || -d "/proc/sys/mars");
|
|
if ($force) {
|
|
check_todo($cmd, $res, "fetch", 0, 0);
|
|
}
|
|
my $old = _get_designated_primary($res);
|
|
lprint "Current designated primary: $old\n";
|
|
if ($cmd eq "primary") {
|
|
check_sync_finished($res, $host) if $host ne $old;
|
|
# also check that other secondaries won't loose their sync primary
|
|
my @names = glob("$mars/resource-$res/data-*");
|
|
# for k <= 2 replicas, the previous check must have been sufficient
|
|
if (scalar(@names) > 2) {
|
|
foreach my $name (@names) {
|
|
$name =~ m:/data-(.+):;
|
|
my $peer = $1;
|
|
next if ($peer eq $old || $peer eq $host);
|
|
check_sync_finished($res, $peer);
|
|
}
|
|
}
|
|
check_todo($cmd, $res, "attach", 1, 0);
|
|
check_todo($cmd, $res, "fetch", 1, 0) if !$force;
|
|
check_todo($cmd, $res, "replay", 1, 0);
|
|
# check that no logfile replay errors exist.
|
|
my $replay_error = get_link("$mars/resource-$res/actual-$host/replay-code", 2);
|
|
if (int($replay_error) < 0) {
|
|
lwarn "Logfile replay / recovery stopped with error code $replay_error.\n";
|
|
ldie "Won't switch to avoid unnoticed data loss. You may however do a 'primary --force'.\n" unless $force;
|
|
}
|
|
}
|
|
return if ($old eq $host and $cmd eq "primary");
|
|
return if $old eq "(none)";
|
|
my $open_count_path = "$mars/resource-$res/actual-$old/open-count";
|
|
my $device_in_use = get_link($open_count_path, 1);
|
|
if ($device_in_use) {
|
|
my $name = get_link("$mars/resource-$res/device-$old", 1) || "unknown";
|
|
lwarn "device '/dev/mars/$name' for resource '$res' is $device_in_use times in use on primary host '$old'\n";
|
|
ldie "first you must umount/close the device (on host '$old')\n" unless $force;
|
|
lwarn "First you SHOULD umount/close the device (on host '$old'), but you ignore this recommendation by giving the --force option.\n";
|
|
if (is_link_recent($open_count_path)) {
|
|
lwarn "You are forcing a SPLIT BRAIN via --force right now. Do you know that this is an ERRONEOUS state? Do you really know what you are doing?\n";
|
|
} else {
|
|
lwarn "You may produce a SPLIT BRAIN via --force because the peer host '$old' is currently not reachable.\n";
|
|
}
|
|
}
|
|
lprint "all preconditions OK for resource '$res'\n";
|
|
}
|
|
|
|
# when necessary, switch to secondary (intermediately)
|
|
sub primary_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
return if ($force and $cmd eq "primary");
|
|
my $old = _get_designated_primary($res);
|
|
return if ($old eq $host and $cmd eq "primary");
|
|
my $new = "(none)";
|
|
try_to_avoid_splitbrain($cmd, $res, $old) if (!$force and $cmd eq "primary");
|
|
return if $old eq $new;
|
|
_primary_res($res, $new, $old);
|
|
}
|
|
|
|
# when necessary, wait
|
|
sub primary_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
return if $force;
|
|
return unless $cmd eq "primary";
|
|
check_primary_gone($res);
|
|
}
|
|
|
|
# when necessary, switch to primary
|
|
sub primary_phase3 {
|
|
my ($cmd, $res) = @_;
|
|
return unless $cmd eq "primary";
|
|
my $old = _get_designated_primary($res);
|
|
my $new = $host;
|
|
_primary_res($res, $new, $old);
|
|
}
|
|
|
|
# wait for device to appear / disappear
|
|
sub primary_phase4 {
|
|
my ($cmd, $res) = @_;
|
|
if($cmd eq "secondary") {
|
|
check_mars_device($cmd, $res, 1, 1);
|
|
return;
|
|
}
|
|
my $ok = detect_splitbrain($res, 1);
|
|
if (!$ok) {
|
|
lwarn "\n";
|
|
lwarn "Sorry, in split brain situations I can only set the _designated_\n";
|
|
lwarn "primary, but I cannot _guarantee_ that becoming the\n";
|
|
lwarn "_actual_ primary is always possible.\n";
|
|
lwarn "You SHOULD resolve the split brain ASAP (e.g. by leave-resource\n";
|
|
lwarn "or invalidate etc).\n";
|
|
lwarn "\n";
|
|
lwarn "If you already tried to resolve the split brain manually, but\n";
|
|
lwarn "this message does not disappear, the reason could be some\n";
|
|
lwarn "hindering left-overs/remains from the former split brain.\n";
|
|
lwarn "ONLY in such a case, try log-purge-all --force.\n";
|
|
lwarn "\n";
|
|
return;
|
|
}
|
|
check_mars_device($cmd, $res, 1, 0);
|
|
}
|
|
|
|
sub wait_umount_res {
|
|
my ($cmd, $res) = @_;
|
|
while (1) {
|
|
my $sum = 0;
|
|
foreach my $path (glob("$mars/resource-$res/actual-$host/open-count")) {
|
|
$sum += get_link($path);
|
|
}
|
|
last if !$sum;
|
|
lprint "device for resource '$res' is $sum times in use on $host\n";
|
|
sleep_timeout(3);
|
|
}
|
|
lprint "OK, device for resource '$res' is not in use.\n";
|
|
}
|
|
|
|
sub invalidate_res_phase0 {
|
|
my ($cmd, $res) = @_;
|
|
check_not_primary(@_);
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "for operation '$cmd', some other designated primary must exist (currently there is none)\n" if $primary eq "(none)";
|
|
ldie "Cannot invalidate the designated primary host '$primary'\n" if $primary eq $host;
|
|
}
|
|
|
|
sub invalidate_res_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/attach", 0);
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/sync", 0);
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/fetch", 0);
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/replay", 0);
|
|
}
|
|
|
|
sub invalidate_res_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
if (!$force) {
|
|
check_status($cmd, $res, "is-syncing", 0, 1);
|
|
check_status($cmd, $res, "is-fetching", 0, 1);
|
|
check_status($cmd, $res, "is-replaying", 0, 1);
|
|
check_status($cmd, $res, "is-attached", 0, 1);
|
|
}
|
|
}
|
|
|
|
sub invalidate_res_phase3 {
|
|
my ($cmd, $res) = @_;
|
|
my $dst = "$mars/resource-$res/syncstatus-$host";
|
|
my $primary = _get_designated_primary($res);
|
|
ldie "Cannot execute 'invalidate' because noone is designated as primary.\n" if (!$primary || $primary eq "(none)");
|
|
ldie "Cannot invalidate the designated primary host '$primary'\n" if $primary eq $host;
|
|
my $replay = get_link("$mars/resource-$res/replay-$primary");
|
|
$replay =~ m/^log-([0-9]+)-/ or ldie "replay link '$replay' is not parsable\n";
|
|
my $replay_nr = $1;
|
|
set_link("0", $dst);
|
|
finish_links(); # opportunity for errors => don't continue
|
|
for my $vers_path (glob("$mars/resource-$res/version-*-$host")) {
|
|
$vers_path =~ m:/version-([0-9]+):;
|
|
my $this_nr = $1;
|
|
_create_delete($vers_path) if $this_nr >= $replay_nr;
|
|
}
|
|
_create_delete("$mars/resource-$res/replay-$host");
|
|
finish_links();
|
|
_wait_delete();
|
|
$force = 0; # this would be too dangerous
|
|
log_purge_res(@_);
|
|
finish_links();
|
|
_wait_delete();
|
|
_set_replaylink("$mars/resource-$res", $replay_nr, $primary, "");
|
|
finish_links();
|
|
_wait_delete();
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/attach", 1);
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/fetch", 1);
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/replay", 1);
|
|
finish_links();
|
|
my $emergency_path = "$mars/resource-$res/actual-$primary/has-emergency";
|
|
my $emergency = get_link($emergency_path, 1);
|
|
if ($emergency) {
|
|
lwarn "Primary '$primary' is in emergency mode. Cannot start sync.\n";
|
|
} else {
|
|
_switch($cmd, $res, "$mars/resource-$res/todo-$host/sync", 1);
|
|
}
|
|
}
|
|
|
|
my %resize_device_size;
|
|
my %resize_old_size;
|
|
my %resize_new_size;
|
|
|
|
sub resize_phase0 {
|
|
my ($cmd, $res, $size_arg) = @_;
|
|
ldie "mars kernel module is not loaded. This is needed for communication with some other hosts!\n" if !is_module_loaded();
|
|
my $new_size = 0;
|
|
if ($size_arg) {
|
|
$new_size = get_size($size_arg);
|
|
ldie "optional size argument '$new_size' must be numeric and positive\n" unless scalar($new_size) > 0;
|
|
lprint "new size: $new_size bytes\n";
|
|
}
|
|
check_primary(@_);
|
|
my $my_size = get_link("$mars/resource-$res/actsize-$host");
|
|
my @actsizes = glob("$mars/resource-$res/actsize-*");
|
|
ldie "resource $res has no actsize-* symlinks\n" unless @actsizes;
|
|
my $lnk = "$mars/resource-$res/size";
|
|
my $old_size = get_link($lnk);
|
|
my $possible_size = 0;
|
|
foreach my $actsize (@actsizes) {
|
|
my $this_size = get_link($actsize);
|
|
if (!$possible_size || $this_size < $possible_size) {
|
|
$possible_size = $this_size;
|
|
}
|
|
}
|
|
lprint "old_size=$old_size\n";
|
|
lprint "possible_size=$possible_size\n";
|
|
$new_size = $possible_size if !$new_size;
|
|
lprint "new_size=$new_size\n";
|
|
ldie "new size $new_size is higher than the possible size (minimum of all volumes) $possible_size" if $new_size > $possible_size; # no override with --force possible
|
|
# disallow decreasing
|
|
ldie "only increases of the size are possible!\n" if $new_size < $old_size;
|
|
my $waste = $my_size - $new_size;
|
|
lwarn "You are wasting $waste bytes locally\n" if $my_size > $new_size;
|
|
# remember values
|
|
$resize_device_size{$res} = _get_mars_size(@_);
|
|
$resize_old_size{$res} = $old_size;
|
|
lwarn "internal mismatch between actual device size and resource size: $resize_device_size{$res} != $resize_old_size{$res}\n" unless $resize_device_size{$res} == $resize_old_size{$res};
|
|
$resize_new_size{$res} = $new_size;
|
|
return 0;
|
|
}
|
|
|
|
sub resize_phase1 {
|
|
my ($cmd, $res) = @_;
|
|
my $old_size = $resize_old_size{$res} or ldie "bad internal size value\n";
|
|
my $new_size = $resize_new_size{$res} or ldie "bad internal size value\n";
|
|
# for safety, check again
|
|
ldie "only increases of the size are possible!\n" if $new_size < $old_size;
|
|
check_primary(@_);
|
|
# Mark the primary data / its size as authoritative
|
|
my $act_lnk = "$mars/resource-$res/syncstatus-$host";
|
|
set_link($new_size, $act_lnk);
|
|
finish_links(); # Chance for errors to pop up
|
|
# Now set the new resource size
|
|
my $lnk = "$mars/resource-$res/size";
|
|
set_link($new_size, $lnk);
|
|
finish_links();
|
|
}
|
|
|
|
sub resize_phase2 {
|
|
my ($cmd, $res) = @_;
|
|
my $old_size = $resize_old_size{$res} or ldie "bad internal size value\n";
|
|
my $new_size = $resize_new_size{$res} or ldie "bad internal size value\n";
|
|
for (;;) {
|
|
my $new_device_size = _get_mars_size(@_);
|
|
if ($new_device_size == $resize_new_size{$res}) {
|
|
lprint "Device size is now $new_device_size.\n";
|
|
last;
|
|
}
|
|
lprint "Device size $new_device_size has not yet reached the new size $resize_new_size{$res}.\n";
|
|
if ($new_device_size != $resize_device_size{$res}) {
|
|
lwarn "The size has changed, but did not reach the correct value.";
|
|
lwarn "Assuming some rounding problems (which may occur at some device types)\n";
|
|
last;
|
|
}
|
|
sleep_timeout();
|
|
}
|
|
}
|
|
|
|
sub role_cmd {
|
|
my ($cmd, $res) = @_;
|
|
my $primary = _get_actual_primary($res) || '(none)';
|
|
my $todo_primary = _get_designated_primary($res);
|
|
my $msg = "I am actually ";
|
|
$msg .= ($primary eq $host) ? "primary" : "secondary";
|
|
if ($primary eq $todo_primary) {
|
|
$msg .= " and $primary is primary" if ($primary ne $host);
|
|
}
|
|
elsif ($primary ne $todo_primary) {
|
|
$todo_primary = "I" if ($todo_primary eq $host);
|
|
$msg .= " and $todo_primary should be primary";
|
|
}
|
|
lprint $msg . "\n";
|
|
}
|
|
|
|
sub mars_state_cmd {
|
|
my ($cmd, $res) = @_;
|
|
my $primary = _get_actual_primary($res) || '(none)';
|
|
my $todo_primary = _get_designated_primary($res);
|
|
|
|
if ($primary eq $host) {
|
|
lprint "is_primary\n";
|
|
return;
|
|
}
|
|
elsif ($todo_primary eq $host) {
|
|
lprint "becoming_primary\n";
|
|
return;
|
|
}
|
|
|
|
# secondary without ambitions to become primary
|
|
|
|
my $size = get_link("$mars/resource-$res/size");
|
|
my $syncstatus = get_link("$mars/resource-$res/syncstatus-$host");
|
|
if ($syncstatus != $size) {
|
|
lprint "secondary inconsistent ($syncstatus bytes of $size)\n";
|
|
return;
|
|
}
|
|
|
|
if ($primary eq "(none)") {
|
|
my $min = 0;
|
|
foreach my $path (glob("$mars/resource-$res/log-*")) {
|
|
my $nr = $path;
|
|
$nr =~ s:^.*[a-z]+-([0-9]+)(-[^/]*)?$:$1:;
|
|
if ($nr > $min) {
|
|
$primary = $path;
|
|
$primary =~ s:^.*/[a-z]+-[0-9]+-([^/]*)$:$1:;
|
|
$min = $nr;
|
|
}
|
|
}
|
|
}
|
|
my $primary_replay = get_link("$mars/resource-$res/replay-$primary");
|
|
my $host_replay = get_link("$mars/resource-$res/replay-$host");
|
|
if ($primary_replay eq $host_replay) {
|
|
lprint "secondary uptodate\n";
|
|
return;
|
|
}
|
|
lprint "secondary outdated ($host_replay instead of $primary_replay)\n";
|
|
}
|
|
|
|
sub cat_cmd {
|
|
my $cmd = shift;
|
|
foreach my $path (@_) {
|
|
_get_text($path, undef, 1);
|
|
}
|
|
}
|
|
|
|
sub mars_info_cmd {
|
|
my ($cmd, $res) = @_;
|
|
my $info = "$mars/resource-$res/logstatus-$host.status";
|
|
cat_cmd($cmd, $info);
|
|
}
|
|
|
|
sub show_cmd {
|
|
my ($cmd, $res) = @_;
|
|
$res = "*" if !$res || $res eq "all";
|
|
my $glob = "$mars/{ips/ip-$host,alive-$host,emergency-$host,rest-space-$host,resource-$res/{device,primary,size,actsize-$host,syncstatus-$host,replay-$host,actual-$host/*,todo-$host/*}}";
|
|
foreach my $link (glob($glob)) {
|
|
next unless -l $link;
|
|
my $res = get_link($link);
|
|
my $short = $link;
|
|
$short =~ s:^$mars/::;
|
|
lprint "$short=$res\n";
|
|
}
|
|
}
|
|
|
|
sub show_errors_cmd {
|
|
my ($cmd, $res) = @_;
|
|
my $text = get_error_text(@_);
|
|
if ($text) {
|
|
lprint $text;
|
|
ldie "resource $res has some (old) problems.\n";
|
|
} else {
|
|
lprint "no errors/warnings are reported.\n";
|
|
}
|
|
}
|
|
|
|
sub version {
|
|
lprint "$0 $Id\n";
|
|
#lprint "my IP is $ip\n";
|
|
exit 0;
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# pretty printing
|
|
|
|
sub seconds2human {
|
|
my $seconds = shift;
|
|
return "--:--:--" unless (defined($seconds) && $seconds ne "" && $seconds >= 0);
|
|
return sprintf("%02d:%02d:%02d", $seconds / 3600, ($seconds % 3600) / 60, $seconds % 60);
|
|
}
|
|
|
|
sub number2human {
|
|
my ($unit, $number) = @_;
|
|
my $k = 1024;
|
|
my $use_float = ($number =~ m/\./);
|
|
$k = 1024.0 if $use_float;
|
|
$_ = $unit;
|
|
SWITCH: {
|
|
if (/t/i) {
|
|
$number /= $k * $k * $k * $k;
|
|
$unit = "TiB";
|
|
last SWITCH;
|
|
}
|
|
if (/g/i) {
|
|
$number /= $k * $k * $k;
|
|
$unit = "GiB";
|
|
last SWITCH;
|
|
}
|
|
if (/m/i) {
|
|
$number /= $k * $k;
|
|
$unit = "MiB";
|
|
last SWITCH;
|
|
}
|
|
if (/k/i) {
|
|
$number /= $k;
|
|
$unit = "KiB";
|
|
last SWITCH;
|
|
}
|
|
$unit = "B";
|
|
}
|
|
if ($use_float || ($number =~ m/\./)) {
|
|
$number = sprintf("%.3f", $number);
|
|
}
|
|
return ($unit, $number);
|
|
}
|
|
|
|
sub progress_bar {
|
|
my ($length, $min, $mid, $max) = @_;
|
|
$min = 0 if $min < 0;
|
|
$mid = $min if $mid < $min;
|
|
$max = $mid if $max < $mid;
|
|
$max = 1 if $max < 1;
|
|
my $pos1 = $length * $min / $max;
|
|
my $bar = '=' x ($pos1 - 1);
|
|
if ($pos1 < $length) {
|
|
$bar .= ">";
|
|
$pos1++;
|
|
}
|
|
my $pos2 = $length * $mid / $max;
|
|
if ($pos1 < $pos2) {
|
|
$bar .= ':' x ($pos2 - $pos1);
|
|
}
|
|
if ($pos2 < $length) {
|
|
$bar .= '.' x ($length - $pos2);
|
|
}
|
|
return "[$bar]";
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# macro evaluation
|
|
|
|
sub make_numeric {
|
|
my $number = shift;
|
|
return 0 if (!defined($number) || $number eq "");
|
|
return $number;
|
|
}
|
|
|
|
sub set_args {
|
|
my $outer_env = shift;
|
|
my $inner_env = shift;
|
|
$$inner_env{"callstack"} .= "," if $$inner_env{"callstack"};
|
|
$$inner_env{"callstack"} .= ${_[0]};
|
|
my $index = 0;
|
|
while (defined(my $next = shift)) {
|
|
my $arg = parse_macro($next, $outer_env);
|
|
$$inner_env{$index++} = $arg;
|
|
}
|
|
# clear all other number variables to avoid confusion
|
|
while (defined($$inner_env{$index})) {
|
|
undef $$inner_env{$index++};
|
|
}
|
|
}
|
|
|
|
# evaluate a primitive macro
|
|
sub eval_fn {
|
|
my $env = shift;
|
|
my $fn = shift;
|
|
# optionally allow primitive macros without prefix primitive- to be substituted
|
|
if ($fn !~ s/^primitive[-_]?//) {
|
|
my $macro = get_macro($fn, 1);
|
|
if ($macro) {
|
|
set_args($env, $env, $fn, @_);
|
|
return parse_macro($macro, $env);
|
|
}
|
|
}
|
|
my $arg1 = shift;
|
|
$_ = $fn;
|
|
SWITCH: {
|
|
if (/^$/) { # variable
|
|
my $varname;
|
|
# prefix *crement operators
|
|
if ($arg1 =~ m/^([-+]{2})$/) {
|
|
my $op = $arg1;
|
|
$varname = parse_macro(shift, $env);
|
|
if ($op =~ m/^\+/) {
|
|
$$env{$varname}++;
|
|
} else {
|
|
$$env{$varname}--;
|
|
}
|
|
} else {
|
|
$varname = parse_macro($arg1, $env);
|
|
}
|
|
my $result = "";
|
|
if (defined($$env{$varname})) {
|
|
$result = $$env{$varname};
|
|
}
|
|
# postfix *crement operators
|
|
if (defined(${_[0]}) && ${_[0]} =~ m/^([-+]{2})$/) {
|
|
my $op = shift;
|
|
if ($op =~ m/^\+/) {
|
|
$$env{$varname}++;
|
|
} else {
|
|
$$env{$varname}--;
|
|
}
|
|
}
|
|
# provisionary light-weight arrays based on CSV format
|
|
if (defined(my $delim = shift) && defined(my $index = shift)) {
|
|
$delim = parse_macro($delim, $env);
|
|
$index = parse_macro($index, $env);
|
|
my @list = split($delim, $result);
|
|
# get last element when denoted
|
|
$index = scalar(@list) - 1 if ($index eq "" || $index eq "*");
|
|
$result = $list[$index];
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^let$/) { # assignment
|
|
my $varname = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $value = parse_macro($arg2, $env);
|
|
$$env{$varname} = $value;
|
|
return "";
|
|
}
|
|
if (/^append$/) { # .=
|
|
my $varname = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $value = parse_macro($arg2, $env);
|
|
$$env{$varname} .= $value;
|
|
return "";
|
|
}
|
|
if (/^set$/) { # provisionary light-weight arrays based on CSV format
|
|
my $varname = parse_macro($arg1, $env);
|
|
my $delim = shift;
|
|
$delim = parse_macro($delim, $env);
|
|
my $index = shift;
|
|
$index = parse_macro($index, $env);
|
|
my @list = split($delim, $$env{$varname});
|
|
# append to list when denoted
|
|
$index = scalar(@list) if ($index eq "" || $index eq "*");
|
|
my $value = shift;
|
|
$value = parse_macro($value, $env);
|
|
$list[$index] = $value;
|
|
$$env{$varname} = join($delim, @list);
|
|
return "";
|
|
}
|
|
if (/^dump[-_]?vars$/) { # write to stderr
|
|
foreach my $key (sort(keys(%$env))) {
|
|
next if $key =~ m/^__.*__$/;
|
|
my $val = $$env{$key};
|
|
lprint_stderr "$key='$val'\n";
|
|
}
|
|
return "";
|
|
}
|
|
if (/^([-+*\/%&|^]|>>|<<|min|max)$/) { # arithmetic / associative operators
|
|
my $op = $1;
|
|
my $number = make_numeric(parse_macro($arg1, $env));
|
|
while (defined(my $next = shift)) {
|
|
my $operand = make_numeric(parse_macro($next, $env));
|
|
$_ = $op;
|
|
if (/^\+$/) { $number += $operand; next; }
|
|
if (/^-$/) { $number -= $operand; next; }
|
|
if (/^\*$/) { $number *= $operand; next; }
|
|
if (/^\/$/) { $number /= $operand; next; }
|
|
if (/^%$/) { $number %= $operand; next; }
|
|
if (/^&$/) { $number &= $operand; next; }
|
|
if (/^\|$/) { $number |= $operand; next; }
|
|
if (/^\^$/) { $number ^= $operand; next; }
|
|
if (/^<<$/) { $number <<= $operand; next; }
|
|
if (/^>>$/) { $number >>= $operand; next; }
|
|
if (/^min$/) { $number = $operand if $number < $operand; next; }
|
|
if (/^max$/) { $number = $operand if $number > $operand; next; }
|
|
ldie "bad arithmetic operator '$op'";
|
|
}
|
|
return $number;
|
|
}
|
|
if (/^([<>]=?|[!=]=)$/) { # numeric comparisons
|
|
my $op = $1;
|
|
my $n1 = make_numeric(parse_macro($arg1, $env));
|
|
my $arg2 = shift;
|
|
my $n2 = make_numeric(parse_macro($arg2, $env));
|
|
$_ = $op;
|
|
if (/^<$/) { return $n1 < $n2; }
|
|
if (/^>$/) { return $n1 > $n2; }
|
|
if (/^<=$/) { return $n1 <= $n2; }
|
|
if (/^>=$/) { return $n1 >= $n2; }
|
|
if (/^==$/) { return $n1 == $n2; }
|
|
if (/^!=$/) { return $n1 != $n2; }
|
|
ldie "bad comparison operator '$op'";
|
|
}
|
|
if (/^(lt|gt|le|ge|eq|ne|match|=~)$/) { # binary string operators
|
|
my $op = $1;
|
|
$op = "=~" if $op eq "match";
|
|
my $n1 = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $n2 = parse_macro($arg2, $env);
|
|
$_ = $op;
|
|
if (/^lt$/) { return $n1 lt $n2; }
|
|
if (/^gt$/) { return $n1 gt $n2; }
|
|
if (/^le$/) { return $n1 le $n2; }
|
|
if (/^ge$/) { return $n1 ge $n2; }
|
|
if (/^eq$/) { return $n1 eq $n2; }
|
|
if (/^ne$/) { return $n1 ne $n2; }
|
|
if (/^=~$/) {
|
|
my $opts = "m";
|
|
my $arg3 = shift;
|
|
$opts = parse_macro($arg3, $env) if defined($arg3);
|
|
# unfortunately standard regex operators don't seem to accept variable options, so we use eval()
|
|
my $result = eval("\$n1 =~ m{$n2}$opts");
|
|
return "" unless defined($result);
|
|
return $result;
|
|
}
|
|
ldie "bad binary operator '$op'";
|
|
}
|
|
if (/^(&&|\|\||and|or)$/) { # shortcut operators
|
|
my $op = $1;
|
|
$op = "&&" if $op eq "and";
|
|
$op = "||" if $op eq "or";
|
|
my $number = parse_macro($arg1, $env);
|
|
while (defined(my $next = shift)) {
|
|
$_ = $op;
|
|
if (/^&&$/) { return 0 if !$number; }
|
|
if (/^\|\|$/) { return 1 if $number; }
|
|
my $operand = parse_macro($next, $env);
|
|
$_ = $op;
|
|
if (/^&&$/) { $number &= $operand; next; }
|
|
if (/^\|\|$/) { $number |= $operand; next; }
|
|
ldie "bad shortcut operator '$op'";
|
|
}
|
|
return $number;
|
|
}
|
|
if (/^([~!]|not)$/) { # unary operators
|
|
my $op = $1;
|
|
$op = "!" if $op eq "not";
|
|
my $number = parse_macro($arg1, $env);
|
|
$_ = $op;
|
|
if (/^~$/) { return ~$number; }
|
|
if (/^!$/) { return !$number; }
|
|
ldie "bad unary operator '$op'";
|
|
}
|
|
# string functions
|
|
if (/^toupper$/) {
|
|
my $txt = parse_macro($arg1, $env);
|
|
return uc($txt);
|
|
}
|
|
if (/^tolower$/) {
|
|
my $txt = parse_macro($arg1, $env);
|
|
return lc($txt);
|
|
}
|
|
if (/^length$/) { # string length
|
|
my $txt = parse_macro($arg1, $env);
|
|
return length($txt);
|
|
}
|
|
if (/^subst$/) { # regex substitution operator
|
|
my $txt = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $regex = parse_macro($arg2, $env);
|
|
my $arg3 = shift;
|
|
my $subst = parse_macro($arg3, $env);
|
|
my $opts = "m";
|
|
my $arg4 = shift;
|
|
$opts = parse_macro($arg4, $env) if defined($arg4);
|
|
# unfortunately standard regex operators don't seem to accept variable options, so we use eval()
|
|
eval("\$txt =~ s{$regex}{$subst}$opts");
|
|
return $txt;
|
|
}
|
|
if (/s?printf$/) { # sprintf()
|
|
my $fmt = $arg1; # exception: don't evaluate the format string!
|
|
my @list = ();
|
|
while (defined(my $next = shift)) {
|
|
my $operand = parse_macro($next, $env);
|
|
push @list, $operand;
|
|
}
|
|
return sprintf($fmt, @list);
|
|
}
|
|
if (/^human[-_]?numbers?$/) { # convert numbers to readable format
|
|
my $name = $_;
|
|
my $unit = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $delim_numbers = parse_macro($arg2, $env);
|
|
$delim_numbers = "/" if $delim_numbers eq "";
|
|
my $arg3 = shift;
|
|
my $delim_unit = parse_macro($arg3, $env);
|
|
$delim_unit = " " if $delim_unit eq "";
|
|
my $max = 0;
|
|
my @list = ();
|
|
while (defined(my $next = shift)) {
|
|
my $number = make_numeric(parse_macro($next, $env));
|
|
push @list, $number;
|
|
$max = $number if $number > $max;
|
|
}
|
|
lwarn "macro $name: no number arguments given\n" unless @list;
|
|
if (!$unit) {
|
|
if ($max >= 999 * 1024*1024*1024*1024) {
|
|
$unit = "T";
|
|
} elsif ($max >= 999 * 1024*1024*1024) {
|
|
$unit = "G";
|
|
} elsif ($max >= 99 * 1024*1024) {
|
|
$unit = "M";
|
|
} elsif ($max >= 9 * 1024) {
|
|
$unit = "K";
|
|
} else {
|
|
$unit = "";
|
|
}
|
|
}
|
|
my @results = ();
|
|
my $conv_unit = "";
|
|
foreach my $number (@list) {
|
|
($conv_unit, my $conv_number) = number2human($unit, $number);
|
|
push @results, $conv_number;
|
|
}
|
|
return join($delim_numbers, @results) . "$delim_unit$conv_unit";
|
|
}
|
|
if (/^human[-_]?seconds$/) { # convert numbers to readable format
|
|
# don't use make_numeric() here in order to allow the result '--:--:--'
|
|
my $number = parse_macro($arg1, $env);
|
|
return seconds2human($number);
|
|
}
|
|
if (/^progress$/) { # progress bar
|
|
my $length = make_numeric(parse_macro($arg1, $env));
|
|
$length = 20 unless ($length && $length > 0);
|
|
my $arg2 = shift;
|
|
if (!defined($arg2)) { # use default values
|
|
my @vector = split(':', eval_fn($env, "summary-vector", ":"));
|
|
return progress_bar($length, @vector);
|
|
}
|
|
my $min = make_numeric(parse_macro($arg2, $env));
|
|
my $arg3 = shift;
|
|
my $mid = make_numeric(parse_macro($arg3, $env));
|
|
my $arg4 = shift;
|
|
my $max = make_numeric(parse_macro($arg4, $env));
|
|
return progress_bar($length, $min, $mid, $max);
|
|
}
|
|
if (/^errno[-_]?text$/) {
|
|
my $code = parse_macro($arg1, $env);
|
|
return "" unless defined($code) && $code != 0;
|
|
$code = -$code if $code < 0;
|
|
return __conv_errno("", $code);
|
|
}
|
|
if (/^get[-_]?log[-_]?status/) {
|
|
return get_error_text($$env{"cmd"}, $$env{"res"});
|
|
}
|
|
if (/^get[-_]?resource[-_]?(fat|err|wrn)([-_]?count)?/) {
|
|
my $what = $1;
|
|
my $do_count = $2;
|
|
my %assoc = ("fat" => 4, "err" => 3, "wrn" => 2);
|
|
my $glob = $$env{"resdir"} . "/$assoc{$what}.*.status";
|
|
return _get_text($glob, undef, 0, $do_count);
|
|
}
|
|
if (/^warn/) {
|
|
my $txt = parse_macro($arg1, $env);
|
|
lwarn $txt;
|
|
return "";
|
|
}
|
|
if (/^die$/) {
|
|
my $txt = parse_macro($arg1, $env);
|
|
ldie $txt;
|
|
return "";
|
|
}
|
|
if (/^is-module-loaded$/) {
|
|
my $path = "/proc/sys/mars";
|
|
my $result = -d $path;
|
|
return defined($result) && $result;
|
|
}
|
|
# list objects
|
|
if (/^cluster[-_]?members$/) {
|
|
my @peers = glob("$mars/ips/ip-*");
|
|
my $list = "";
|
|
foreach my $peer (sort(@peers)) {
|
|
$peer =~ s:^$mars/ips/ip-::;
|
|
$list .= "$peer\n";
|
|
}
|
|
return $list;
|
|
}
|
|
if (/^resource[-_]?members$/) {
|
|
my @peers = glob($$env{"resdir"} . "/data-*");
|
|
my $list = "";
|
|
foreach my $peer (sort(@peers)) {
|
|
$peer =~ s:^.*/data-::;
|
|
$list .= "$peer\n";
|
|
}
|
|
return $list;
|
|
}
|
|
if (/^(my|all)[-_]?resources$/) {
|
|
my $what = $1;
|
|
my $peer = "*";
|
|
if ($what eq "my") {
|
|
$peer = parse_macro($arg1, $env);
|
|
$peer = $$env{"host"} unless $peer;
|
|
}
|
|
my @list = glob("$mars/resource-*/data-$peer");
|
|
map { s:^$mars/resource-(.*?)/data-.*:$1:; } @list;
|
|
my $list = "";
|
|
my $old = "";
|
|
foreach my $item (sort(@list)) {
|
|
$list .= "$item\n" if $item ne $old;
|
|
$old = $item;
|
|
}
|
|
return $list;
|
|
}
|
|
# low-level symlink access
|
|
if (/^readlink$/) {
|
|
my $path = parse_macro($arg1, $env);
|
|
return get_link($path, 1);
|
|
}
|
|
if (/^setlink$/) {
|
|
my $src = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $dst = parse_macro($arg2, $env);
|
|
set_link($src, $dst);
|
|
return "";
|
|
}
|
|
# high-level state access
|
|
if (/^(get|todo|actual)[-_]?primary$/) {
|
|
my $op = $1;
|
|
my $primary;
|
|
if ($op eq "actual") {
|
|
lwarn "DEPRECATED: you are trying to uniquely identify an actual primary hostname, but this is conceptually wrong because in split-brain situations there may exist multiple ones. Use view-is-primary instead. That would be safe.\n" unless $$env{cmd} =~ m/-1and1$/;
|
|
$primary = _get_actual_primary($$env{"res"});
|
|
} else {
|
|
$primary = _get_designated_primary($$env{"res"});
|
|
}
|
|
$primary = "" if (!defined($primary) || $primary eq "(none)");
|
|
$primary = ($primary eq $$env{"host"}) if $op eq "todo";
|
|
return $primary;
|
|
}
|
|
if (/^todo[-_]?(attach|sync|fetch|replay)?$/) {
|
|
my $what = $1;
|
|
$what = parse_macro($arg1, $env) unless defined($what);
|
|
my $lnk = $$env{"resdir"} . "/todo-" . $$env{"host"} . "/$what";
|
|
$lnk = correct_path($lnk);
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^get[-_]?msg$/) {
|
|
my $what = parse_macro($arg1, $env);
|
|
my $lnk = $$env{"resdir"} . "/actual-" . $$env{"host"} . "/msg-$what";
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^(all|the)[-_](pretty[-_]?)?(global[-_]?)?((?:err|wrn|inf)[-_])?(msg|count)$/) {
|
|
my $shorten = ($1 eq "the");
|
|
my $pretty = $2;
|
|
my $global = $3;
|
|
my $specific = $4;
|
|
my $type = $5;
|
|
$specific = "" unless defined($specific);
|
|
my $glob = "$mars";
|
|
$glob = $$env{"resdir"} if (!defined($global) && $$env{"res"});
|
|
$glob .= "/actual-" . $$env{"host"} . "/msg-$specific*";
|
|
my $result = "";
|
|
my $count = 0;
|
|
foreach my $msg_path (glob($glob)) {
|
|
my $val = get_link($msg_path, 1);
|
|
if ($shorten) {
|
|
# skip uninteresting messages
|
|
next if $val =~ m/^OK/;
|
|
# skip _transient_ error messages
|
|
if ($msg_path =~ m/-err-/ && $val =~ m/^([0-9]+\.[0-9]{9})/) {
|
|
my $stamp = $1;
|
|
if ($stamp) {
|
|
my $delta = $timeout > 0 ? $timeout : 30;
|
|
next if $stamp + $delta > time();
|
|
}
|
|
}
|
|
}
|
|
$val = _replace_timestamps($val, $shorten) if defined($pretty);
|
|
my $key = $msg_path;
|
|
$key =~ s:^.*/msg-::;
|
|
$result .= "$key: $val\n";
|
|
$count++;
|
|
}
|
|
return $count if $type eq "count";
|
|
return $result;
|
|
}
|
|
if (/^is[-_]?alive$/) {
|
|
my $peer = parse_macro($arg1, $env);
|
|
$peer = _get_designated_primary($$env{"res"}) unless $peer;
|
|
$peer = $$env{"host"} unless $peer;
|
|
my $lnk = "$mars/alive-$peer";
|
|
return is_link_recent($lnk, $$env{"window"});
|
|
}
|
|
if (/^alive[-_]?timestamp$/) {
|
|
my $peer = parse_macro($arg1, $env);
|
|
$peer = _get_designated_primary($$env{"res"}) unless $peer;
|
|
return -1 if !$peer || $peer eq "(none)";
|
|
my $lnk = "$mars/alive-$peer";
|
|
return get_link_stamp($lnk);
|
|
}
|
|
if (/^is[-_]?(almost[-_]?)?consistent$/) {
|
|
my $almost = $1;
|
|
# has sync finished?
|
|
my $syncrest = make_numeric(eval_fn($env, "sync-rest", ""));
|
|
return 0 if $syncrest > 0;
|
|
if (!$almost && eval_fn($env, "is-primary", "")) {
|
|
# is the replay link indicating that something is not yet applied / dirty?
|
|
my $replay = get_link($$env{"resdir"} . "/replay-" . $$env{"host"}, 1);
|
|
$replay =~ m:,[0-9]+,([0-9]+):;
|
|
my $rest = $1;
|
|
return 0 if $rest > 0;
|
|
}
|
|
# are all logfiles applied which had accumulated during sync?
|
|
my $replay = get_link($$env{"resdir"} . "/replay-" . $$env{"host"}, 1);
|
|
return 0 unless $replay;
|
|
my $syncpos = get_link($$env{"resdir"} . "/syncpos-" . $$env{"host"}, 2);
|
|
if (defined($syncpos) && $syncpos) {
|
|
my $cmp = compare_replaylinks($syncpos, $replay);
|
|
return 0 if $cmp > 0;
|
|
}
|
|
return 1;
|
|
}
|
|
if (/^get[-_]?(disk|device)$/) {
|
|
my $what = $1;
|
|
$what = "data" if $what eq "disk";
|
|
my $lnk = $$env{"resdir"} . "/$what-" . $$env{"host"};
|
|
my $result = get_link($lnk, 1);
|
|
$result = "" unless defined($result);
|
|
$result = "/dev/mars/$result" if ($what eq "device" && $result !~ m:^/:);
|
|
return $result;
|
|
}
|
|
if (/^(disk|device)[-_]?present$/) {
|
|
my $what = $1;
|
|
$what = "data" if $what eq "disk";
|
|
my $lnk = $$env{"resdir"} . "/$what-" . $$env{"host"};
|
|
my $result = get_link($lnk, 1);
|
|
$result = "" unless defined($result);
|
|
$result = "/dev/mars/$result" if ($what eq "device" && $result !~ m:^/:);
|
|
if ($result) {
|
|
$result = -b $result;
|
|
$result = "0" unless defined($result);
|
|
}
|
|
return $result;
|
|
}
|
|
# deprecated (irregular names)
|
|
if (/^present[-_]?(disk|device)$/) {
|
|
my $what = $1;
|
|
return eval_fn($env, "$what-present", $arg1);
|
|
}
|
|
if (/^(device)[-_]?opened$/) {
|
|
my $what = $1;
|
|
my $peer = $$env{"host"};
|
|
if ($what eq "device") {
|
|
my $other = eval_fn($env, "get-device", $arg1);
|
|
if ($other =~ m/\@(.*)/) {
|
|
$peer = $1;
|
|
}
|
|
}
|
|
my $lnk = $$env{"resdir"} . "/actual-$peer/open-count";
|
|
my $result = get_link($lnk, 1);
|
|
$result = "0" unless defined($result);
|
|
return $result;
|
|
}
|
|
if (/^is[-_]?split([-_]?brain)?$/) {
|
|
my $split = detect_splitbrain($$env{"res"}, 0);
|
|
return $split ? 0 : 1;
|
|
}
|
|
if (/^is[-_]?(attach|sync|fetch|replay|primary|emergency)$/) {
|
|
my $what = $1;
|
|
my $is = "is";
|
|
$is = "has" if $what eq "emergency";
|
|
my $lnk = $$env{"resdir"} . "/actual-" . $$env{"host"} . "/$is-$what";
|
|
$lnk = correct_path($lnk);
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^does$/) {
|
|
my $what = parse_macro($arg1, $env);
|
|
my $is = "is";
|
|
$is = "has" if $what eq "emergency";
|
|
my $lnk = $$env{"resdir"} . "/actual-" . $$env{"host"} . "/$is-$what";
|
|
$lnk = correct_path($lnk);
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^(tree|rest-space)$/) {
|
|
my $what = $1;
|
|
my $lnk = "$mars/$what-$host";
|
|
$lnk = correct_path($lnk);
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^(uuid)$/) {
|
|
my $what = $1;
|
|
my $lnk = "$mars/$what";
|
|
$lnk = correct_path($lnk);
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^replay[-_]?code$/) {
|
|
my $lnk = $$env{"resdir"} . "/actual-" . $$env{"host"} . "/replay-code";
|
|
return get_link($lnk, 2);
|
|
}
|
|
if (/^(sync|fetch|replay|work)[-_]?(rate|remain)$/) {
|
|
my $what = $1;
|
|
my $select = $2;
|
|
if ($what eq "work") {
|
|
my $val1 = eval_fn($env, "fetch-$select", "");
|
|
my $val2 = eval_fn($env, "replay-$select", "");
|
|
return "" if (!defined($val1) || $val1 eq "");
|
|
return "" if (!defined($val2) || $val2 eq "");
|
|
$val1 = make_numeric($val1);
|
|
$val2 = make_numeric($val2);
|
|
return $val1 + $val2 if $select eq "remain";
|
|
# take the maximum rate
|
|
return $val1 if $val1 > $val2;
|
|
return $val2;
|
|
}
|
|
my %names =
|
|
(
|
|
"sync" => "sync_rate",
|
|
"fetch" => "file_rate",
|
|
"replay" => "replay_rate",
|
|
);
|
|
my $lnk = $$env{"resdir"} . "/actual-" . $$env{"host"} . "/" . $names{$what};
|
|
my $rate = get_link($lnk, 2);
|
|
return "" if !defined($rate) || $rate eq "" || $rate < 0;
|
|
return $rate * 1024 if $select eq "rate";
|
|
if ($select eq "remain") {
|
|
my $rest = make_numeric(eval_fn($env, "$what-rest", ""));
|
|
return 0 if $rest <= 0;
|
|
return -1 if ($rate <= 0);
|
|
return $rest / 1024 / $rate;
|
|
}
|
|
ldie "unknown macro $_\n";
|
|
}
|
|
if (/^sync[-_]?size$/) {
|
|
my $lnk = $$env{"resdir"} . "/size";
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^sync[-_]?pos$/) {
|
|
my $lnk = $$env{"resdir"} . "/syncstatus-" . $$env{"host"};
|
|
return get_link($lnk, 1);
|
|
}
|
|
if (/^(replay|work)[-_]?(pos|lognr|basenr)$/) {
|
|
my $what = $1;
|
|
my $op = $2;
|
|
my ($sum, $firstpos, $logpos, $level) = get_amount($$env{"resdir"}, $$env{"host"}, -1, 0);
|
|
return $firstpos if $op eq "lognr";
|
|
return $logpos if $op eq "basenr";
|
|
return $sum;
|
|
}
|
|
if (/^(replay[-_]?size)|(fetch[-_]?pos)$/) {
|
|
my ($sum0) = get_amount($$env{"resdir"}, $$env{"host"}, -1, 0);
|
|
my ($sum, $firstpos, $logpos, $level) = get_amount($$env{"resdir"}, $$env{"host"}, 1, 1);
|
|
return $sum0 + $sum;
|
|
}
|
|
if (/^(fetch|work)[-_]?(size|lognr)$/) {
|
|
my $what = $1;
|
|
my $op = $2;
|
|
my ($sum0) = get_amount($$env{"resdir"}, $$env{"host"}, -1, 0);
|
|
my ($sum, $firstpos, $logpos, $level) = get_amount($$env{"resdir"}, $$env{"host"}, 1, 0);
|
|
return $logpos if $op eq "lognr";
|
|
return $sum0 + $sum;
|
|
}
|
|
if (/^(sync|fetch|replay|work)[-_]?(rest|(?:almost[-_]?|threshold[-_]?)?reached|percent|permille|vector)$/) {
|
|
my $what = $1;
|
|
my $op = $2;
|
|
my $size = make_numeric(eval_fn($env, "$what-size", ""));
|
|
my $pos = make_numeric(eval_fn($env, "$what-pos", ""));
|
|
my $result = 0;
|
|
if ($op eq "rest") {
|
|
$result = $size - $pos if $pos < $size;
|
|
} elsif ($op =~ m/^almost/) {
|
|
my $limit = make_numeric(parse_macro($arg1, $env)) if $arg1 ne "";
|
|
$limit = 990 if $limit <= 0;
|
|
$result = 1 if int($pos / $limit) >= int($size / 1000);
|
|
} elsif ($op =~ m/^threshold/) {
|
|
my $my_threshold = make_numeric($$env{"threshold"});
|
|
$arg1 = parse_macro($arg1, $env);
|
|
$my_threshold = make_numeric(get_size($arg1)) if $arg1 ne "";
|
|
$result = 1 if $pos + $my_threshold >= $size;
|
|
} elsif ($op eq "reached") {
|
|
$result = 1 if $pos >= $size;
|
|
} elsif ($op eq "percent") {
|
|
$result = 100;
|
|
$result = 100.5 * $pos / $size if $size > 0;
|
|
$result = 100 if $result >= 100.0;
|
|
} elsif ($op eq "permille") {
|
|
$result = 1000;
|
|
$result = 1000.5 * $pos / $size if $size > 0;
|
|
$result = 1000 if $result >= 1000.0;
|
|
} elsif ($op eq "vector") {
|
|
my $delim = parse_macro($arg1, $env);
|
|
$delim = ":" unless $delim;
|
|
$result = "$pos$delim$size";
|
|
} else {
|
|
ldie "unknown operation '$op'\n";
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^summary[-_]?vector$/) {
|
|
my $pos1 = make_numeric(eval_fn($env, "replay-pos", ""));
|
|
my $pos2 = make_numeric(eval_fn($env, "fetch-pos", ""));
|
|
my $size = make_numeric(eval_fn($env, "fetch-size", ""));
|
|
my $delim = parse_macro($arg1, $env);
|
|
$delim = ":" unless $delim;
|
|
return "$pos1$delim$pos2$delim$size";
|
|
}
|
|
if (/^deletable[-_]?size$/) {
|
|
my ($min, $max) = _get_deletable_logfiles($_, $$env{"res"});
|
|
my $sum = 0;
|
|
foreach my $path (glob("$mars/resource-" . $$env{"res"} . "/log-*")) {
|
|
$path =~ m/\/log-([0-9]+)-/;
|
|
my $nr = $1;
|
|
next if $nr < $min or $nr >= $max;
|
|
my @stat = stat($path);
|
|
$sum += $stat[7];
|
|
}
|
|
return $sum;
|
|
}
|
|
if (/^occupied[-_]?size$/) {
|
|
my $sum = 0;
|
|
foreach my $path (glob("$mars/resource-" . $$env{"res"} . "/log-*")) {
|
|
$path =~ m/\/log-([0-9]+)-/;
|
|
my @stat = stat($path);
|
|
$sum += $stat[7];
|
|
}
|
|
return $sum;
|
|
}
|
|
if (/^(disk|resource|device)[-_]?size$/) {
|
|
my $what = $1;
|
|
my $path = "$mars/resource-" . $$env{"res"};
|
|
if ($what eq "device" && eval_fn($env, "device-present", "")) {
|
|
return _get_mars_size($$env{"cmd"}, $$env{"res"});
|
|
} elsif ($what eq "disk"){
|
|
my $peer = parse_macro($arg1, $env);
|
|
$peer = $$env{"host"} unless $peer;
|
|
$path .= "/actsize-$peer";
|
|
} else {
|
|
$path .= "/size";
|
|
}
|
|
return get_link($path, 1);
|
|
}
|
|
# time handling and pausing
|
|
if (/^time$/) {
|
|
return mars_time();
|
|
}
|
|
if (/^replay[-_]?timestamp$/) {
|
|
$arg1 = parse_macro($arg1, $env);
|
|
$arg1 = $$env{"host"} unless $arg1;
|
|
my $replay = $$env{"resdir"} . "/replay-$arg1";
|
|
return get_link_stamp($replay);
|
|
}
|
|
if (/^fetch[-_]?timestamp$/) {
|
|
$arg1 = parse_macro($arg1, $env);
|
|
$arg1 = $$env{"host"} unless $arg1;
|
|
my $fetch_glob = $$env{"resdir"} . "/version-*-$arg1";
|
|
my @paths = sort(glob($fetch_glob));
|
|
return -1 if !@paths;
|
|
my $fetch = pop(@paths);
|
|
return get_link_stamp($fetch);
|
|
}
|
|
if (/^work[-_]?timestamp$/) {
|
|
my $time1 = make_numeric(eval_fn($env, "fetch-timestamp", $arg1));
|
|
my $time2 = make_numeric(eval_fn($env, "replay-timestamp", $arg1));
|
|
# use the "best" of both...
|
|
return $time1 if $time1 > $time2;
|
|
return $time2;
|
|
}
|
|
if (/^(fetch|replay|work|alive)[-_]?age$/) {
|
|
my $what = $1;
|
|
my $time = make_numeric(eval_fn($env, "$what-timestamp", $arg1));
|
|
return -1 if $time <= 0;
|
|
return int(mars_time()) - $time;
|
|
}
|
|
if (/^(fetch|replay|work|alive)[-_]?lag$/) {
|
|
my $what = $1;
|
|
$arg1 = $$env{"host"} unless $arg1;
|
|
my $arg2 = shift;
|
|
my $primary = parse_macro($arg2, $env);
|
|
if (!$primary) {
|
|
$primary = _get_designated_primary($$env{"res"});
|
|
}
|
|
return -1 if !$primary || $primary eq "(none)";
|
|
my $time1 = make_numeric(eval_fn($env, "$what-timestamp", $arg1));
|
|
my $time2 = make_numeric(eval_fn($env, "$what-timestamp", $primary));
|
|
return -1 if ($time1 <= 0 || $time2 <= 0);
|
|
return 0 if $time1 < $time2;
|
|
return $time1 - $time2;
|
|
}
|
|
if (/^sleep$/) {
|
|
my $time = parse_macro($arg1, $env);
|
|
sleep($time);
|
|
return "";
|
|
}
|
|
if (/^timeout$/) {
|
|
my $time = parse_macro($arg1, $env);
|
|
sleep_timeout($time);
|
|
return "";
|
|
}
|
|
if (/^wait[-_]?((?:todo|is)[-_](?:attach|sync|fetch|replay|primary)[-_](?:on|off))$/) {
|
|
my $specific = $1;
|
|
$specific =~ s/_/-/g;
|
|
wait_cond($$env{"cmd"}, $$env{"res"}, $specific);
|
|
return "";
|
|
}
|
|
if (/^wait(?:[-_]?resource)?$/) {
|
|
my $specific = parse_macro($arg1, $env);
|
|
wait_cond($$env{"cmd"}, $$env{"res"}, $specific);
|
|
return "";
|
|
}
|
|
if (/^wait[-_]?cluster$/) {
|
|
my $specific = parse_macro($arg1, $env);
|
|
wait_cluster($$env{"cmd"}, $$env{"res"}, $specific);
|
|
return "";
|
|
}
|
|
# generic flow control and loops
|
|
if (/^(get|foreach)[-_]?glob$/) {
|
|
my $op = $1;
|
|
my $paths = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $varname = parse_macro($arg2, $env);
|
|
my $arg3 = shift;
|
|
my @list = glob($paths);
|
|
my $result = "";
|
|
if ($op eq "get") {
|
|
my $delim = parse_macro($arg3, $env);
|
|
foreach my $path (@list) {
|
|
$result .= $delim if $result;
|
|
$result .= $path;
|
|
}
|
|
} else { # foreach
|
|
foreach my $path (@list) {
|
|
$$env{$varname} = $path;
|
|
$result .= parse_macro($arg3, $env);
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^(if|unless)$/) {
|
|
my $op = $1;
|
|
my $cond = parse_macro($arg1, $env);
|
|
$cond = !$cond if $op eq "unless";
|
|
my $arg2 = shift;
|
|
if ($cond) {
|
|
ldie "undefined $op-part\n" unless defined($arg2);
|
|
return parse_macro($arg2, $env);
|
|
} elsif (defined(my $arg3 = shift)) {
|
|
return parse_macro($arg3, $env);
|
|
}
|
|
return "";
|
|
}
|
|
if (/^else?(if|unless)$/) {
|
|
my $op = $1;
|
|
unshift @_, $arg1;
|
|
while (defined(my $arg1 = shift)) {
|
|
if (defined(my $arg2 = shift)) {
|
|
my $cond = parse_macro($arg1, $env);
|
|
$cond = !$cond if $op eq "unless";
|
|
if ($cond) {
|
|
return parse_macro($arg2, $env);
|
|
}
|
|
} else { # odd number of arguments is treated as final "else"
|
|
return parse_macro($arg1, $env);
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
if (/^while$/) {
|
|
my $arg2 = shift;
|
|
my $result = "";
|
|
while (parse_macro($arg1, $env)) {
|
|
$result .= parse_macro($arg2, $env);
|
|
next if _control_macro($env, "__next__");
|
|
last if _control_macro($env, "__last__");
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^until$/) {
|
|
my $arg2 = shift;
|
|
my $result = "";
|
|
until (parse_macro($arg1, $env)) {
|
|
$result .= parse_macro($arg2, $env);
|
|
next if _control_macro($env, "__next__");
|
|
last if _control_macro($env, "__last__");
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^for$/) {
|
|
my ($arg2, $arg3, $arg4) = (shift, shift, shift);
|
|
my $result = "";
|
|
for (parse_macro($arg1, $env); parse_macro($arg2, $env); parse_macro($arg3, $env)) {
|
|
$result .= parse_macro($arg4, $env);
|
|
next if _control_macro($env, "__next__");
|
|
last if _control_macro($env, "__last__");
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^foreach$/) {
|
|
my $varname = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
my $txt = parse_macro($arg2, $env);
|
|
my $arg3 = shift;
|
|
my $delim = parse_macro($arg3, $env);
|
|
my $arg4 = shift;
|
|
my $result = "";
|
|
foreach my $value (split($delim, $txt)) {
|
|
$$env{$varname} = $value;
|
|
$result .= parse_macro($arg4, $env);
|
|
next if _control_macro($env, "__next__");
|
|
last if _control_macro($env, "__last__");
|
|
}
|
|
return $result;
|
|
}
|
|
if (/^protect$/) { # don't evaluate argument, take verbatim
|
|
return $arg1;
|
|
}
|
|
if (/^eval$/) { # evaluate given number of times
|
|
my $count = parse_macro($arg1, $env);
|
|
my $arg2 = shift;
|
|
while ($count-- > 0) {
|
|
$arg2 = parse_macro($arg2, $env);
|
|
}
|
|
return $arg2;
|
|
}
|
|
if (/^eval[-_]?down$/) { # evaluate until result is stable
|
|
for (;;) {
|
|
my $old = $arg1;
|
|
$arg1 = parse_macro($arg1, $env);
|
|
last if $arg1 eq $old;
|
|
}
|
|
return $arg1;
|
|
}
|
|
if (/^tmp$/) { # evaluate once in a temporary scope
|
|
my %copy_env = %$env;
|
|
my $result = parse_macro($arg1, \%copy_env);
|
|
return $result;
|
|
}
|
|
if (/^(include|call)$/) {
|
|
my $op = $1;
|
|
my $name = parse_macro($arg1, $env);
|
|
my $txt = get_macro($name);
|
|
if ($op eq "call") { # run in new sub-scope
|
|
my %copy_env = %$env;
|
|
set_args($env, \%copy_env, $name, @_);
|
|
return parse_macro($txt, \%copy_env);
|
|
}
|
|
# 'include' runs in the same scope
|
|
set_args($env, $env, $name, @_);
|
|
return parse_macro($txt, $env);
|
|
}
|
|
if (/^callstack$/) {
|
|
return $$env{"callstack"};
|
|
}
|
|
if (/^(abort|return|stop-eval)$/) {
|
|
my $op = $1;
|
|
$$env{$op} = 1;
|
|
return "";
|
|
}
|
|
if (/^(next|last)$/) {
|
|
my $op = $1;
|
|
$$env{$op} = 1;
|
|
$$env{"__return__"} = 1;
|
|
return "";
|
|
}
|
|
ldie "call to unknown macro '$fn'\n";
|
|
}
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# macro parsing
|
|
|
|
my $match_comment = "#[^\n]*\n|//[^\n]*\n|/\\*(?:[^*]|\\*[^/])*\\*/|\\\\\n\\s*";
|
|
my $match_nobrace = qr'(?:[^{}\\]|\\.)*'s;
|
|
my $match_inner = $match_nobrace;
|
|
my $match_brace = qr"\{$match_inner\}"s;
|
|
for (my $i = 0; $i < 20; $i++) {
|
|
$match_inner = qr"$match_nobrace(?:$match_brace$match_nobrace)*"s;
|
|
$match_brace = qr"\{$match_inner\}"s;
|
|
}
|
|
my $match_fn_head = qr"\%([^\\\s{}()\[\]]*)(?=\{)"s;
|
|
my $match_fn = qr"$match_fn_head(?:\{($match_inner)\})"s;
|
|
|
|
sub _control_macro {
|
|
my $env = shift;
|
|
my $control = shift;
|
|
my $result = $$env{$control};
|
|
$$env{$control} = 0;
|
|
return $result;
|
|
}
|
|
|
|
sub parse_macro {
|
|
my ($text, $env) = @_;
|
|
$text = "" unless defined($text);
|
|
my $old_callstack = $$env{"callstack"};
|
|
my $result = "";
|
|
while ($text =~ m/\\(.)|$match_fn/sp) {
|
|
my $escape = $1;
|
|
my $fn = $2;
|
|
my @args = ($3);
|
|
my $pre = $PREMATCH;
|
|
my $post = $POSTMATCH;
|
|
if (defined($escape)) {
|
|
$result .= $pre;
|
|
$text = $post;
|
|
$_ = $escape;
|
|
if (/[tnrfbae]/) {
|
|
eval "\$result .= \"\\$escape\"";
|
|
next;
|
|
}
|
|
if (/[a-zA-Z]/) {
|
|
lwarn "control sequence '\\$escape' is reserved for future use\n";
|
|
}
|
|
$result .= $escape;
|
|
next;
|
|
}
|
|
return "" if _control_macro($env, "__abort__");
|
|
return $result if _control_macro($env, "__return__");
|
|
return $result . $text if _control_macro($env, "__stop_eval__");
|
|
$result .= $pre;
|
|
$text = $post;
|
|
while ($text =~ m/\A\{($match_inner)\}/sp ) {
|
|
push @args, $1;
|
|
$text = $POSTMATCH;
|
|
}
|
|
my $new = eval_fn($env, $fn, (@args));
|
|
ldie "undefined result from evaluation of primitive macro '$fn'\n" unless defined($new);
|
|
$$env{"callstack"} = $old_callstack;
|
|
$result .= $new;
|
|
}
|
|
return "" if _control_macro($env, "__abort__");
|
|
return $result if _control_macro($env, "__return__");
|
|
return $result . $text if _control_macro($env, "__stop_eval__");
|
|
return $result . $text;
|
|
}
|
|
|
|
sub eval_macro {
|
|
my ($cmd, $res, $text) = (shift, shift, shift);
|
|
$text =~ s{$match_comment}{}sg;
|
|
my %start_env =
|
|
(
|
|
"cmd" => $cmd,
|
|
"res" => $res,
|
|
"resdir" => "$mars/resource-$res",
|
|
"mars" => $mars,
|
|
"host" => $host,
|
|
"ip" => $ip,
|
|
"timeout" => $timeout,
|
|
"threshold" => $threshold,
|
|
"window" => $window,
|
|
"force" => $force,
|
|
"dry-run" => $dry_run,
|
|
"verbose" => $verbose,
|
|
"callstack" => "",
|
|
# internal, deliberately not documented
|
|
"__abort__" => 0,
|
|
"__return__" => 0,
|
|
"__stop_eval__" => 0,
|
|
"__next__" => 0,
|
|
"__last__" => 0,
|
|
);
|
|
set_args(\%start_env, \%start_env, $cmd, @_);
|
|
return parse_macro($text, \%start_env);
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# macro commands
|
|
|
|
my $macro = "";
|
|
|
|
my %complex_macros =
|
|
(
|
|
"default"
|
|
=> "%if{%{res}}{"
|
|
. " %{res} %include{diskstate} %include{replstate} %include{flags} %include{role} %include{primarynode} %include{commstate}\n"
|
|
. "%if{%>{%-{%disk-size{}}{%resource-size{}}}{%{threshold}}}{"
|
|
. " Hint: you are wasting %human-numbers{}{ }{ }{%-{%disk-size{}}{%resource-size{}}} on disk %get-disk{}\n"
|
|
. "}"
|
|
. "%if{%and{%not{%is-primary{}}}{%is-attach{}}}{"
|
|
. "%if{%not{%sync-reached{}}}{"
|
|
. "%include{syncinfo}"
|
|
. "}"
|
|
. "%if{%not{%work-reached{}}}{"
|
|
. "%include{replinfo}"
|
|
. "}"
|
|
. "}"
|
|
. "%call{resource-errors}"
|
|
. "}",
|
|
|
|
"default-global"
|
|
=> "%call{comminfo}",
|
|
|
|
"1and1"
|
|
=> "%if{%{res}}{"
|
|
. " %{res} %include{diskstate-1and1} %include{replstate-1and1} %include{flags-1and1} %include{role-1and1} %include{primarynode-1and1}\n"
|
|
. "%if{%and{%is-attach{}}{%not{%sync-reached{}}}}{"
|
|
. "%include{syncinfo-1and1}"
|
|
. "}"
|
|
. "%if{%and{%is-attach{}}{%not{%work-threshold-reached{}}}}{"
|
|
. "%include{replinfo-1and1}"
|
|
. "}"
|
|
. "%call{resource-errors-1and1}"
|
|
. "}{"
|
|
. "%the-pretty-global-msg{}"
|
|
. "}",
|
|
|
|
"diskstate"
|
|
=> "%elsif{%not{%get-disk{}}}{"
|
|
. "NotJoined"
|
|
. "}{%not{%disk-present{}}}{"
|
|
. "NotPresent"
|
|
. "}{%not{%todo-attach{}}}{"
|
|
. "%if{%is-attach{}}{"
|
|
. "Detaching"
|
|
. "}{"
|
|
. "Detached"
|
|
. "}"
|
|
. "}{%and{%replay-code{}}{%<{%replay-code{}}{0}}}{"
|
|
. "DefectiveLog[%errno-text{%replay-code{}}]"
|
|
. "}{%not{%is-attach{}}}{"
|
|
. "NoAttach"
|
|
. "}{%not{%is-consistent{}}}{"
|
|
. "%elsif{%not{%todo-primary{}}}{"
|
|
. "InConsistent"
|
|
. "}{%is-primary{}}{"
|
|
. "WriteBack"
|
|
. "}{"
|
|
. "Recovery"
|
|
. "}"
|
|
. "}{%not{%work-reached{}}}{"
|
|
. "%elsif{%not{%todo-primary{}}}{"
|
|
. "OutDated[%call{outdated-flags}]"
|
|
. "}{%is-primary{}}{"
|
|
. "WriteBack"
|
|
. "}{"
|
|
. "Recovery"
|
|
. "}"
|
|
. "}{%and{%ne{%get-primary{}}{}}{%tmp{%let{host}{%get-primary{}}%is-emergency{}}}}{"
|
|
. "EmergencyMode"
|
|
. "}{"
|
|
. "UpToDate"
|
|
. "}",
|
|
|
|
"diskstate-1and1"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%does{attach}}{"
|
|
. "%if{%is-almost-consistent{}}{"
|
|
. "%if{%work-reached{}}{"
|
|
. "Uptodate"
|
|
. "}{"
|
|
. "Outdated[%call{outdated-flags-1and1}]"
|
|
. "}"
|
|
. "}{Inconsistent}"
|
|
. "}{Detached}"
|
|
. "}{Detached}",
|
|
|
|
"outdated-flags"
|
|
=> "%if{%fetch-reached{}}{}{F}%if{%replay-reached{}}{}{R}",
|
|
|
|
"outdated-flags-1and1"
|
|
=> "%if{%fetch-reached{}}{}{F}%if{%replay-reached{}}{}{R}",
|
|
|
|
"replstate"
|
|
=> "%elsif{%not{%is-module-loaded{}}}{"
|
|
. "ModuleNotLoaded"
|
|
. "}{%not{%is-alive{%{host}}}}{"
|
|
. "UnResponsive"
|
|
. "}{%not{%get-disk{}}}{"
|
|
. "NotJoined"
|
|
. "}{%not{%todo-attach{}}}{"
|
|
. "NotStarted"
|
|
. "}{%todo-primary{}}{" # I am designated primary
|
|
. "%elsif{%is-emergency{}}{"
|
|
. "EmergencyMode"
|
|
. "}{%is-primary{}}{"
|
|
. "Replicating"
|
|
. "}{"
|
|
. "NotYetPrimary"
|
|
. "}"
|
|
. "}{" # Secondary
|
|
. "%elsif{%and{%sync-rest{}}{%not{%todo{sync}}}}{"
|
|
. "PausedSync"
|
|
. "}{%is-sync{}}{"
|
|
. "Syncing"
|
|
. "}{%not{%todo{fetch}}}{"
|
|
. "PausedFetch"
|
|
. "}{%not{%todo{replay}}}{"
|
|
. "PausedReplay"
|
|
. "}{%not{%get-primary{}}}{"
|
|
. "NoPrimaryDesignated"
|
|
. "}{%not{%is-alive{}}}{"
|
|
. "PrimaryUnreachable"
|
|
. "}{"
|
|
. "Replaying"
|
|
. "}"
|
|
. "}",
|
|
|
|
"replstate-1and1"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%is-primary{}}{"
|
|
. "Replicating"
|
|
. "}{"
|
|
. "%if{%is-alive{}}{"
|
|
. "%if{%and{%not{%sync-reached{}}}{%not{%todo{sync}}}}{"
|
|
. "PausedSync"
|
|
. "}{"
|
|
. "%if{%does{sync}}{"
|
|
. "Syncing"
|
|
. "}{"
|
|
. "%unless{%and{%todo-fetch{}}{%todo-replay{}}}{"
|
|
. "PausedReplay"
|
|
. "}{Replaying}"
|
|
. "}"
|
|
. "}"
|
|
. "}{PrimaryUnreachable}"
|
|
. "}"
|
|
. "}{NotJoined}",
|
|
|
|
"flags"
|
|
=> "%if{%disk-present{}}{%if{%device-present{}}{D}{d}}{-}"
|
|
. "%if{%is-consistent{}}{C}{%if{%disk-present{}}{c}{-}}"
|
|
. "%if{%does{attach}}{%if{%todo{attach}}{A}{a}}{%if{%todo{attach}}{a}{-}}"
|
|
. "%if{%sync-reached{}}{S}{%if{%todo{sync}}{s}{-}}"
|
|
. "%if{%fetch-reached{}}{F}{%if{%todo{fetch}}{f}{-}}"
|
|
. "%if{%replay-reached{}}{R}{%if{%todo{replay}}{r}{-}}",
|
|
|
|
"flags-1and1"
|
|
=> "-%if{%todo{sync}}{S}{-}%if{%todo{fetch}}{F}{-}%if{%todo{replay}}{R}{-}-",
|
|
|
|
"todo-role"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%todo-primary{}}{"
|
|
. "Primary"
|
|
. "}{"
|
|
. "Secondary"
|
|
. "}"
|
|
. "}{None}",
|
|
|
|
"role"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%todo-primary{}}{"
|
|
. "%if{%is-primary{}}{"
|
|
. "Primary"
|
|
. "}{"
|
|
. "NotYetPrimary"
|
|
. "}"
|
|
. "}{"
|
|
. "%if{%is-primary{}}{"
|
|
. "RemainsPrimary"
|
|
. "}{"
|
|
. "Secondary"
|
|
. "}"
|
|
. "}"
|
|
. "}{None}",
|
|
|
|
"role-1and1"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%is-primary{}}{"
|
|
. "Primary"
|
|
. "}{"
|
|
. "Secondary"
|
|
. "}"
|
|
. "}{Secondary}",
|
|
|
|
"primarynode"
|
|
=> "%if{%todo-primary{}}{"
|
|
. "%{host}"
|
|
. "}{"
|
|
. "%get-primary{}"
|
|
. "}",
|
|
|
|
"primarynode-1and1"
|
|
=> "%if{%disk-present{}}{"
|
|
. "%if{%is-primary{}}{"
|
|
. "%{host}"
|
|
. "}{"
|
|
. "%if{%actual-primary{}}{"
|
|
. "%actual-primary{}"
|
|
. "}{-}"
|
|
. "}"
|
|
. "}{-}",
|
|
|
|
"commstate"
|
|
=> "%let{comm}{%alive-age{}}"
|
|
. "%if{%>={%{comm}}{%{window}}}{"
|
|
. "%human-seconds{%{comm}}"
|
|
. "}",
|
|
|
|
"syncinfo"
|
|
=> "%let{amount}{%human-numbers{}{ }{ }{%sync-pos{}}{%sync-size{}}}"
|
|
. "%let{rate}{%human-numbers{}{ }{ }{%sync-rate{}}}"
|
|
. "%sprintf{ syncing: %s %.2f%% (%d/%d)%s rate: %.2f %s/sec remaining: %s hrs\n}"
|
|
. "{%progress{20}{%sync-pos{}}{0}{%sync-size{}}}"
|
|
. "{%sync-percent{}}"
|
|
. "{%{amount}{ }{0}}"
|
|
. "{%{amount}{ }{1}}"
|
|
. "{%{amount}{ }{2}}"
|
|
. "{%{rate}{ }{0}}"
|
|
. "{%{rate}{ }{1}}"
|
|
. "{%human-seconds{%sync-remain{}}}"
|
|
. "%call{sync-line}",
|
|
|
|
"syncinfo-1and1"
|
|
=> "%let{amount}{%human-numbers{}{ }{ }{%sync-pos{}}{%sync-size{}}}"
|
|
. "%let{rate}{%human-numbers{}{ }{ }{%sync-rate{}}}"
|
|
. "%sprintf{ syncing: %s %.2f%% (%d/%d)%s rate: %.2f %s/sec remaining: %s hrs\n}"
|
|
. "{%progress{20}{%sync-pos{}}{0}{%sync-size{}}}"
|
|
. "{%sync-percent{}}"
|
|
. "{%{amount}{ }{0}}"
|
|
. "{%{amount}{ }{1}}"
|
|
. "{%{amount}{ }{2}}"
|
|
. "{%{rate}{ }{0}}"
|
|
. "{%{rate}{ }{1}}"
|
|
. "{%human-seconds{%sync-remain{}}}"
|
|
. "%call{sync-line-1and1}",
|
|
|
|
"replinfo"
|
|
=> "%let{amount}{%human-numbers{}{ }{ }{%replay-pos{}}{%fetch-size{}}}"
|
|
. "%sprintf{ replaying: %s %.2f%% (%d/%d)%s logs: [%d..%d]\n}"
|
|
. "{%progress{20}{%replay-pos{}}{%fetch-pos{}}{%fetch-size{}}}"
|
|
. "{%work-percent{}}"
|
|
. "{%{amount}{ }{0}}"
|
|
. "{%{amount}{ }{1}}"
|
|
. "{%{amount}{ }{2}}"
|
|
. "{%replay-lognr{}}"
|
|
. "{%fetch-lognr{}}"
|
|
. "%call{fetch-line}"
|
|
. "%call{replay-line}",
|
|
|
|
"replinfo-1and1"
|
|
=> "%let{amount}{%human-numbers{}{ }{ }{%replay-pos{}}{%fetch-size{}}}"
|
|
. "%sprintf{ replaying: %s %.2f%% (%d/%d)%s logs: [%d..%d]\n}"
|
|
. "{%progress{20}{%replay-pos{}}{%fetch-pos{}}{%fetch-size{}}}"
|
|
. "{%work-percent{}}"
|
|
. "{%{amount}{ }{0}}"
|
|
. "{%{amount}{ }{1}}"
|
|
. "{%{amount}{ }{2}}"
|
|
. "{%replay-lognr{}}"
|
|
. "{%fetch-lognr{}}"
|
|
. "%call{fetch-line-1and1}"
|
|
. "%call{replay-line-1and1}",
|
|
|
|
"sync-line"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%sync-pos{}}{%sync-size{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%sync-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%sync-remain{}}}"
|
|
. " > sync: %{amount} rate: %{rate}/sec remaining: %{remain} hrs\n",
|
|
|
|
"sync-line-1and1"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%sync-pos{}}{%sync-size{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%sync-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%sync-remain{}}}"
|
|
. " > sync: %{amount} rate: %{rate}/sec remaining: %{remain} hrs\n",
|
|
|
|
"fetch-line"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%fetch-rest{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%fetch-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%fetch-remain{}}}"
|
|
. "%let{age}{%if{%and{%fetch-remain{}}{%>={%fetch-age{}}{%{window}}}}{ age: %human-seconds{%fetch-age{}}}}"
|
|
. "%let{lag}{%if{%and{%fetch-remain{}}{%>={%fetch-lag{}}{%{window}}}}{ lag: %human-seconds{%fetch-lag{}}}}"
|
|
. " > fetch: %{amount}%{age}%{lag} rate: %{rate}/s remaining: %{remain}\n",
|
|
|
|
"fetch-line-1and1"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%fetch-rest{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%fetch-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%fetch-remain{}}}"
|
|
. " > fetch: %{amount} rate: %{rate}/sec remaining: %{remain} hrs\n",
|
|
|
|
"replay-line"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%replay-rest{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%replay-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%replay-remain{}}}"
|
|
. "%let{age}{%if{%and{%replay-remain{}}{%>={%replay-age{}}{%{window}}}}{ age: %human-seconds{%replay-age{}}}}"
|
|
. " > replay: %{amount}%{age} rate: %{rate}/s remaining: %{remain}\n",
|
|
|
|
"replay-line-1and1"
|
|
=> "%let{amount}{%human-numbers{}{}{}{%replay-rest{}}}"
|
|
. "%let{rate}{%human-numbers{}{}{}{%replay-rate{}}}"
|
|
. "%let{remain}{%human-seconds{%replay-remain{}}}"
|
|
. " > replay: %{amount} rate: %{rate}/sec remaining: %{remain} hrs\n",
|
|
|
|
"resource-errors"
|
|
=> "%let{fat-count}{%get-resource-fat-count{}}"
|
|
. "%if{%{fat-count}}{"
|
|
. "FATALS FILE (%{fat-count})"
|
|
. "%if{%{verbose}}{"
|
|
. ":\n%get-resource-fat{}"
|
|
. "}{"
|
|
. ": available with --verbose\n"
|
|
. "}"
|
|
. "}"
|
|
|
|
. "%let{errs}{%the-err-count{}}"
|
|
. "%if{%{errs}}{"
|
|
. "ERRORS LNK (%{errs}):\n"
|
|
. "%the-pretty-err-msg{}"
|
|
. "}"
|
|
|
|
. "%let{err-count}{%get-resource-err-count{}}"
|
|
. "%if{%{err-count}}{"
|
|
. "ERRORS FILE (%{err-count})"
|
|
. "%if{%{verbose}}{"
|
|
. ":\n%get-resource-err{}"
|
|
. "}{"
|
|
. ": available with --verbose\n"
|
|
. "}"
|
|
. "}"
|
|
|
|
. "%let{wrns}{%the-wrn-count{}}"
|
|
. "%if{%{wrns}}{"
|
|
. "WARNINGS LNK (%{wrns}):\n"
|
|
. "%the-pretty-wrn-msg{}"
|
|
. "}"
|
|
|
|
. "%let{wrn-count}{%get-resource-wrn-count{}}"
|
|
. "%if{%and{%{verbose}}{%{wrn-count}}}{"
|
|
. "WARNINGS FILE (%{wrn-count})"
|
|
. "%if{%{verbose}}{"
|
|
. ":\n%get-resource-wrn{}"
|
|
. "}{"
|
|
. ": available with --verbose\n"
|
|
. "}"
|
|
. "}"
|
|
|
|
. "%let{infs}{%the-inf-count{}}"
|
|
. "%if{%and{%{verbose}}{%{infs}}}{"
|
|
. "INFOS LNK (%{infs}):\n"
|
|
. "%the-pretty-inf-msg{}"
|
|
. "}"
|
|
|
|
. "%let{status_msg}{%get-log-status-{}}"
|
|
. "%if{%and{%{verbose}}{%{status_msg}}}{"
|
|
. "STATUS FILE:\n%{status_msg}"
|
|
. "}",
|
|
|
|
|
|
"resource-errors-1and1"
|
|
=> "%let{fat-count}{%get-resource-fat-count{}}"
|
|
. "%if{%{fat-count}}{"
|
|
. "FATALS FILE (%{fat-count}):\n"
|
|
. "%get-resource-fat{}"
|
|
. "}"
|
|
|
|
. "%let{errs}{%the-err-count{}}"
|
|
. "%if{%{errs}}{"
|
|
. "ERRORS LNK (%{errs}):\n"
|
|
. "%the-pretty-err-msg{}"
|
|
. "}"
|
|
|
|
. "%let{err-count}{%get-resource-err-count{}}"
|
|
. "%if{%{err-count}}{"
|
|
. "ERRORS FILE (%{err-count}):\n"
|
|
. "%get-resource-err{}"
|
|
. "}"
|
|
|
|
. "%let{wrns}{%the-wrn-count{}}"
|
|
. "%if{%{wrns}}{"
|
|
. "WARNINGS LNK (%{wrns}):\n"
|
|
. "%the-pretty-wrn-msg{}"
|
|
. "}"
|
|
|
|
. "%let{wrn-count}{%get-resource-wrn-count{}}"
|
|
. "%if{%and{%{verbose}}{%{wrn-count}}}{"
|
|
. "WARNINGS FILE (%{wrn-count})"
|
|
. "%if{%{verbose}}{"
|
|
. ":\n%get-resource-wrn{}"
|
|
. "}{"
|
|
. ": available with --verbose\n"
|
|
. "}"
|
|
. "}"
|
|
|
|
. "%let{infs}{%the-inf-count{}}"
|
|
. "%if{%and{%{verbose}}{%{infs}}}{"
|
|
. "INFOS LNK (%{infs}):\n"
|
|
. "%the-pretty-inf-msg{}"
|
|
. "}"
|
|
|
|
. "%let{status_msg}{%get-log-status-{}}"
|
|
. "%if{%and{%{verbose}}{%{status_msg}}}{"
|
|
. "STATUS FILE:\n%{status_msg}"
|
|
. "}",
|
|
|
|
"comminfo"
|
|
=> "%let{txt}{%the-pretty-global-msg{}}"
|
|
. "%let{txt}{%subst{%{txt}}{^.*CONNECTED.*\$\n*}{}{mg}}"
|
|
. "%if{%{txt}}{"
|
|
. "++++++++++++ Global / Communication Status ++++++++++++\n"
|
|
. "%{txt}"
|
|
. "}",
|
|
|
|
# drbd similar ones
|
|
"state"
|
|
=> "NYI Please override macro \\%%{0}\\{\\}",
|
|
"cstate"
|
|
=> "NYI Please override macro \\%%{0}\\{\\}",
|
|
"dstate"
|
|
=> "NYI Please override macro \\%%{0}\\{\\}",
|
|
"status"
|
|
=> "NYI Please override macro \\%%{0}\\{\\}",
|
|
);
|
|
|
|
my %view_macros = %complex_macros;
|
|
|
|
# add some trivial macros to the command line interface
|
|
# FIXME: only at most one argument is allowed for now.
|
|
my %trivial_globs =
|
|
(
|
|
|
|
# intended for human use
|
|
"{all,the}-{pretty-,}{global-,}{{err,wrn,inf}-,}msg"
|
|
=> "",
|
|
"{is,todo}-{attach,sync,fetch,replay,primary}"
|
|
=> "",
|
|
"is-{split-brain,consistent,emergency}"
|
|
=> "",
|
|
"rest-space"
|
|
=> "",
|
|
"get-{disk,device}"
|
|
=> "",
|
|
"present-{disk,device}"
|
|
=> "(deprecated, use *-present instead)",
|
|
"{disk,device}-present"
|
|
=> "",
|
|
"device-opened"
|
|
=> "",
|
|
"get-log-status"
|
|
=> "",
|
|
"get-resource-{fat,err,wrn}{,-count}"
|
|
=> "",
|
|
|
|
# intended for scripting
|
|
"{my,all}-resources"
|
|
=> "",
|
|
"{cluster,resource}-members"
|
|
=> "",
|
|
"{disk,resource,device}-size"
|
|
=> "",
|
|
"deletable-size"
|
|
=> "",
|
|
"occupied-size"
|
|
=> "",
|
|
"replay-code"
|
|
=> "When negative, this indidates that a replay/recovery error has occurred.",
|
|
"errno-text"
|
|
=> "Convert errno numbers (positive or negative) into human readable text.",
|
|
"{sync,fetch,replay,work,syncpos}-{size,pos}"
|
|
=> "",
|
|
"{sync,fetch,replay,work}-{rest,{almost-,threshold-,}reached,percent,permille,vector}"
|
|
=> "",
|
|
"{sync,fetch,replay}-{rate,remain}"
|
|
=> "",
|
|
"summary-vector",
|
|
=> "",
|
|
"{alive,fetch,replay,work}-{timestamp,age,lag}"
|
|
=> "",
|
|
|
|
|
|
"{get,actual}-primary"
|
|
=> "",
|
|
"is-{alive}"
|
|
=> "",
|
|
"uuid"
|
|
=> "",
|
|
"tree"
|
|
=> "",
|
|
|
|
|
|
"wait-{is,todo}-{attach,sync,fetch,replay,primary}-{on,off}"
|
|
=> "",
|
|
);
|
|
|
|
my $glob = "";
|
|
foreach my $new_glob (sort(keys(%trivial_globs))) {
|
|
$glob .= "," if $glob;
|
|
$glob .= $new_glob;
|
|
}
|
|
foreach my $name (glob("{$glob}")) {
|
|
$view_macros{$name} = "\%primitive-$name\{\%\{1}}";
|
|
}
|
|
|
|
sub _get_pre {
|
|
my ($rest, $add) = @_;
|
|
$rest =~ s{(\A.*\n)}{}sp;
|
|
$add = 0 if $1;
|
|
return length($rest) + $add;
|
|
}
|
|
|
|
sub _break_line {
|
|
my ($result, $add, $indent) = @_;
|
|
my $pre_len = _get_pre($result, $add);
|
|
if ($pre_len != $indent) {
|
|
$result .= "\\\n" . ' ' x $indent;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
sub _pretty_macro {
|
|
my ($text, $add, $indent) = @_;
|
|
$text =~ s/\\n/\n/gs;
|
|
my $result = "";
|
|
# look for function calls
|
|
while ($text =~ m/^($match_fn_head(?:{})*)/mp) {
|
|
$result .= $PREMATCH;
|
|
my $fn = $1;
|
|
$text = $POSTMATCH;
|
|
$result = _break_line($result, $add, $indent);
|
|
$add = 0;
|
|
$result .= $fn;
|
|
while ($text =~ m/\A\{/sp) {
|
|
# don't break simple / non-recursive / unbreakable arguments
|
|
if ($text =~ m/\A(\{(?:\s$match_inner|[^%{}]*)\})/sp) {
|
|
my $shortcut = $1;
|
|
$text = $POSTMATCH;
|
|
# make newlines non-verbatim
|
|
$shortcut =~ s{\n}{\\n}spg;
|
|
$result .= $shortcut;
|
|
next;
|
|
}
|
|
# break more complex arguments
|
|
#$result .= "{\\\n" . ' ' x $indent;
|
|
$result .= "{";
|
|
if ($text =~ m/\A\{([\s]$match_inner|)\}/sp) {
|
|
$result .= "$1}";
|
|
$text = $POSTMATCH;
|
|
} elsif ($text =~ m/\A\{([^\s]$match_inner)\}/sp ) {
|
|
my $arg = $1;
|
|
$text = $POSTMATCH;
|
|
my $sub_add = _get_pre($result, 0);
|
|
my $subst = _pretty_macro($arg, $sub_add, $indent + 2);
|
|
$result .= $subst;
|
|
$result = _break_line($result, 0, $indent);
|
|
$result .= "}";
|
|
} else {
|
|
ldie "wtf '$text'?\n";
|
|
}
|
|
}
|
|
}
|
|
$result .= $text;
|
|
return $result;
|
|
}
|
|
|
|
sub pretty_macro {
|
|
my $txt = _pretty_macro(@_);
|
|
# always add a trailing newline (for vi ;)
|
|
$txt .= "\\\n" unless $txt =~ m{\n\Z}sp;
|
|
return $txt;
|
|
}
|
|
|
|
if (defined($ARGV[0]) && $ARGV[0] =~ m/^dump-(all-)?macros$/) {
|
|
my %macros = %complex_macros;
|
|
%macros = %view_macros if defined($1);
|
|
foreach my $name (keys %macros) {
|
|
my $txt = $macros{$name};
|
|
$txt = pretty_macro($txt, 0, 0);
|
|
my $file = "$name.tpl";
|
|
if (-r $file) { # backup already existing files
|
|
for (my $i = 0; ; $i++) {
|
|
my $file_old = "$file.old$i";
|
|
unless (-r $file_old) {
|
|
rename($file, $file_old);
|
|
last;
|
|
}
|
|
}
|
|
}
|
|
open(OUT, ">", $file) or ldie "cannot create file '$file'\n";
|
|
print OUT $txt;
|
|
close(OUT);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
sub get_macro {
|
|
my ($cmd, $tolerate) = @_;
|
|
if ($macro) {
|
|
my $orig = $macro;
|
|
$macro = ""; # consume once
|
|
return $orig;
|
|
}
|
|
foreach my $path (".", "~/.marsadm", "/etc/marsadm") {
|
|
my $file = "$path/$cmd.tpl";
|
|
if (-r $file) {
|
|
lprint_stderr "using macro file '$file'\n" if (defined($view_macros{$cmd}));
|
|
local $/; # slurp
|
|
open(IN, "<", $file) or next;
|
|
my $tpl = <IN>;
|
|
close(IN);
|
|
$tpl =~ s{$match_comment}{}sg;
|
|
$tpl =~ s{\\n}{\n}sg;
|
|
return $tpl;
|
|
}
|
|
}
|
|
return $view_macros{$cmd} if (defined($view_macros{$cmd}));
|
|
ldie "cannot find macro '$cmd'\n" unless defined($tolerate);
|
|
return "";
|
|
}
|
|
|
|
sub view_cmd {
|
|
my ($cmd, $res) = (shift, shift);
|
|
if ($cmd =~ s/^prettyprint-//) {
|
|
my $txt = get_macro($cmd);
|
|
print pretty_macro($txt, 0);
|
|
return;
|
|
}
|
|
$cmd =~ s/^view-?//;
|
|
$cmd = "default" unless $cmd;
|
|
my $tpl = get_macro($cmd);
|
|
my $result = eval_macro($cmd, $res, $tpl, @_);
|
|
if ($result ne "") { # add trailing newline if none exists
|
|
chomp $result;
|
|
$result .= "\n";
|
|
}
|
|
print $result;
|
|
}
|
|
|
|
##################################################################
|
|
|
|
# command table of all commands
|
|
|
|
my %cmd_table =
|
|
(
|
|
# new keywords
|
|
"create-uuid"
|
|
=> [
|
|
"verbose 3",
|
|
"usage: create-uuid (no parameters)",
|
|
"Deprecated.",
|
|
"This is only needed if you have a very old $mars/",
|
|
"directory structure from MARS version light0.1beta05",
|
|
"or earlier.",
|
|
\&create_uuid,
|
|
],
|
|
"create-cluster"
|
|
=> [
|
|
"usage: create-cluster (no parameters)",
|
|
"This must be called exactly once when creating a new cluster.",
|
|
"Don't call this again! Use join-cluster on the secondary nodes.",
|
|
"Please read the PDF manual for details.",
|
|
\&create_cluster,
|
|
],
|
|
"join-cluster"
|
|
=> [
|
|
"usage: join-cluster <hostname_of_primary>",
|
|
"Establishes a new cluster membership.",
|
|
"This must be called once on any new cluster member.",
|
|
"This is a prerequisite for join-resource.",
|
|
\&join_cluster,
|
|
],
|
|
"leave-cluster"
|
|
=> [
|
|
"usage: leave-cluster (no parameters)",
|
|
"This can be used for final deconstruction of a cluster member.",
|
|
"Prior to this, all resources must have been left",
|
|
"via leave-resource.",
|
|
"Notice: this will never destroy the cluster UID on the /mars/",
|
|
"filesystem.",
|
|
"Please read the PDF manual for details.",
|
|
\&leave_cluster,
|
|
],
|
|
"create-resource"
|
|
=> [
|
|
"usage: create-resource <resource_name> </dev/lv/mydata>",
|
|
"(further syntax variants are described in the PDF manual).",
|
|
"Create a new resource out of a pre-existing disk (backing",
|
|
"block device) /dev/lv/mydata (or similar).",
|
|
"The current node will start in primary role, thus",
|
|
"/dev/mars/<resource_name> will appear after a short time, initially",
|
|
"showing the same contents as the underlying disk /dev/lv/mydata.",
|
|
"It is good practice to name the resource <resource_name> and the",
|
|
"disk name identical.",
|
|
\&create_res,
|
|
],
|
|
"join-resource"
|
|
=> [
|
|
"usage: join-resource <resource_name> </dev/lv/mydata>",
|
|
"(further syntax variants are described in the PDF manual).",
|
|
"The resource <resource_name> must have been already created on",
|
|
"another cluster node, and the network must be healthy.",
|
|
"The contents of the local replica disk /dev/lv/mydata will be",
|
|
"overwritten by the initial fast full sync from the currently",
|
|
"designated primary node.",
|
|
"After the initial full sync has finished, the current host will",
|
|
"act in secondary role.",
|
|
"For details on size constraints etc, refer to the PDF manual.",
|
|
\&create_res,
|
|
],
|
|
"leave-resource"
|
|
=> [
|
|
"Precondition: the local host must be in secondary role.",
|
|
"Stop being a member of the resource, and thus stop all",
|
|
"replication activities. The status of the underlying disk",
|
|
"will remain in its current state (whatever it is).",
|
|
\&leave_res_phase0,
|
|
"check preconditions",
|
|
\&leave_res_phase1,
|
|
"switch state",
|
|
\&leave_res_phase2,
|
|
"wait for deletions",
|
|
],
|
|
"delete-resource"
|
|
=> [
|
|
"CAUTION! This is dangerous when the network is somehow",
|
|
"interrupted, or when damaged nodes are later re-surrected",
|
|
"in any way.\n",
|
|
"Precondition: the resource must no longer have any members",
|
|
"(see leave-resource).",
|
|
"This is only needed when you _insist_ on re-using a damaged",
|
|
"resource for re-creating a new one with exactly the same",
|
|
"old <resource_name>.",
|
|
"HINT: best practice is to not use this, but just create a _new_",
|
|
"resource with a new <resource_name> out of your local disks.",
|
|
"Please read the PDF manual on potential consequences.",
|
|
\&delete_res,
|
|
],
|
|
"set-connect-pref-list"
|
|
=> [
|
|
"verbose 2",
|
|
"usage: set-connect-pref-list <resource_name> <host_list>",
|
|
"Provisionary command for internal use at 1&1. Will be replaced by",
|
|
"a better concept somewhen. The <host_list> must be comma-separated.",
|
|
\&set_connect_pref_list,
|
|
],
|
|
"get-connect-pref-list"
|
|
=> [
|
|
"verbose 2",
|
|
"Provisionary command for internal use at 1&1. Will be replaced by",
|
|
"a better concept somewhen.",
|
|
"Shows the outcome of set-connect-pref-list.",
|
|
\&set_connect_pref_list,
|
|
],
|
|
"log-rotate"
|
|
=> [
|
|
"Only useful at the primary side.",
|
|
"Start writing transaction logs into a new transaction logfile.",
|
|
"This must be regularly called by a cron job or similar.",
|
|
"For details and best practices, please refer to the PDF manual.",
|
|
\&logrotate_res,
|
|
],
|
|
"log-delete"
|
|
=> [
|
|
"When possible, globally delete at most one old transaction logfile",
|
|
"which is known to be superfluous, i.e. all secondaries no longer",
|
|
"need to replay it.",
|
|
"Hint: use this only for testing and manual inspection.",
|
|
"For regular maintainance cron jobs, please prefer log-delete-all.",
|
|
\&logdelete_res,
|
|
],
|
|
"log-delete-all"
|
|
=> [
|
|
"When possible, globally delete all old transaction logfiles which",
|
|
"are known to be superflous, i.e. all secondaries no longer need",
|
|
"to replay them.",
|
|
"This must be regularly called by a cron job or similar, in order",
|
|
"to prevent overflow of the /mars/ directory.",
|
|
"For details and best practices, please refer to the PDF manual.",
|
|
\&logdelete_res,
|
|
],
|
|
"log-purge-all"
|
|
=> [
|
|
"This is potentially dangerous.",
|
|
"Use this only if you are really desperate in trying to resolve a",
|
|
"split brain. Use this only after reading the PDF manual!",
|
|
\&log_purge_res,
|
|
],
|
|
"fake-sync"
|
|
=> [
|
|
"verbose 1",
|
|
"Attention: this is potentially dangerous.",
|
|
"Only for experts.",
|
|
"Please read the PDF manual to understand the risks!",
|
|
\&fake_sync_phase1,
|
|
"switch sync off",
|
|
\&fake_sync_phase2,
|
|
"wait for sync off",
|
|
\&fake_sync_phase3,
|
|
"fake sync",
|
|
],
|
|
"set-link"
|
|
=> [
|
|
"verbose 1",
|
|
"usage: set-link <path> <value>",
|
|
"Only for experts.",
|
|
"Will disappear in a future MARS release.",
|
|
\&set_link_cmd,
|
|
],
|
|
"get-link"
|
|
=> [
|
|
"verbose 1",
|
|
"usage: get-link <path>",
|
|
"Only for experts.",
|
|
"Will disappear in a future MARS release.",
|
|
\&set_link_cmd,
|
|
],
|
|
"set-sync-pref-list"
|
|
=> [
|
|
"verbose 2",
|
|
"usage: set-sync-pref-list <resource_name> <host_list>",
|
|
"Provisionary command for internal use at 1&1. Will be replaced by",
|
|
"a better concept somewhen. The <host_list> must be comma-separated.",
|
|
\&set_sync_pref_list,
|
|
],
|
|
"get-sync-pref-list"
|
|
=> [
|
|
"verbose 2",
|
|
"Provisionary command for internal use at 1&1. Will be replaced by",
|
|
"a better concept somewhen. Shows the outcome of set-sync-pref-list.",
|
|
\&set_sync_pref_list,
|
|
],
|
|
"set-sync-limit-value"
|
|
=> [
|
|
"usage: set-sync-limit-value <new_value>",
|
|
"Set the maximum number of resources which should by syncing",
|
|
"concurrently.",
|
|
\&set_sync_limit_value,
|
|
],
|
|
"get-sync-limit-value"
|
|
=> [
|
|
"usage: get-sync-limit-value (no parameters)",
|
|
"For retrieval of the value set by set-sync-limit-value.",
|
|
\&set_sync_limit_value,
|
|
],
|
|
"delete-file"
|
|
=> [
|
|
"verbose 1",
|
|
"usage: delete-file <path>",
|
|
"VERY dangerous!",
|
|
"Only for experts.",
|
|
\&delete_file_cmd,
|
|
],
|
|
"set-emergency-limit"
|
|
=> [
|
|
"usage: set-emergency-limit <resource_name> <value>",
|
|
"Set a per-resource emergency limit for disk space in /mars.",
|
|
"See PDF manual for details.",
|
|
\&emergency_limit_res,
|
|
],
|
|
"get-emergency-limit"
|
|
=> [
|
|
"Counterpart of set-emergency-limit (per-resource emergency limit)",
|
|
\&emergency_limit_res,
|
|
],
|
|
"emergency-limit" => \&emergency_limit_res,
|
|
"cat"
|
|
=> [
|
|
"usage: cat <path>",
|
|
"Print internal debug output in human readable form.",
|
|
"Numerical timestamps and numerical error codes are replaced",
|
|
"by more readable means.",
|
|
"Example: marsadm cat /mars/5.total.status",
|
|
\&cat_cmd,
|
|
],
|
|
"show"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated old low-level tool. Don't use. Use macros instead.",
|
|
\&show_cmd,
|
|
],
|
|
"show-errors"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated old low-level tool. Don't use. Use macros instead.",
|
|
\&show_errors_cmd,
|
|
],
|
|
"show-state"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated old low-level tool. Don't use. Use macros instead.",
|
|
\&mars_state_cmd,
|
|
],
|
|
"mars-state" => \&mars_state_cmd, # deprecated
|
|
"show-info"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated old low-level tool. Don't use. Use macros instead.",
|
|
\&mars_info_cmd,
|
|
],
|
|
"mars-info" => \&mars_info_cmd, # deprecated
|
|
"pause-replay-local"
|
|
=> [
|
|
"Stop replaying transaction logfiles for now.",
|
|
"This is independent from any {pause,resume}-fetch operations.",
|
|
"This may be used for freezing the state of your replica for some",
|
|
"time, if you have enough space on /mars/.",
|
|
"Only useful on a secondary node.",
|
|
\&pause_replay_local_res,
|
|
],
|
|
"pause-replay-global"
|
|
=> [
|
|
"Like pause-replay-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&pause_replay_global_res,
|
|
],
|
|
"pause-replay"
|
|
=> [
|
|
"See pause-replay-local.",
|
|
\&pause_replay_local_res,
|
|
],
|
|
"resume-replay-local"
|
|
=> [
|
|
"Restart replaying transaction logfiles, when there is some",
|
|
"data left.",
|
|
"This is independent from any {pause,resume}-fetch operations.",
|
|
"This should be used for unfreezing the state of your local replica.",
|
|
"Only useful on a secondary node.",
|
|
\&pause_replay_local_res,
|
|
],
|
|
"resume-replay-global"
|
|
=> [
|
|
"Like resume-replay-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&pause_replay_global_res,
|
|
],
|
|
"resume-replay"
|
|
=> [
|
|
"See resume-replay-local.",
|
|
\&pause_replay_local_res,
|
|
],
|
|
"set-replay"
|
|
=> [
|
|
"verbose 1",
|
|
"VERY dangerous!",
|
|
"Only for experts.",
|
|
\&set_replay_res,
|
|
],
|
|
"wait-umount"
|
|
=> [
|
|
"Wait until /dev/mars/<resource_name> has disappeared in the",
|
|
"cluster (even remotely).",
|
|
"Useful on both primary and secondary nodes.",
|
|
\&wait_umount_res,
|
|
],
|
|
"wait-cluster"
|
|
=> [
|
|
"usage: wait-resource [<resource_name>]",
|
|
"Waits until a ping-pong communication has succeeded in the",
|
|
"whole cluster (or only the members of <resource_name>).",
|
|
"NOTICE: this is extremely useful for avoiding races when scripting",
|
|
"in a cluster.",
|
|
\&wait_cluster,
|
|
],
|
|
"wait-resource"
|
|
=> [
|
|
"usage: wait-resource <resource_name>",
|
|
" [[attach|fetch|replay|sync][-on|-off]]",
|
|
"Wait until the given condition is met on the resource, locally.",
|
|
\&wait_cond,
|
|
],
|
|
|
|
# compatible keywords (or their derivatives)
|
|
"attach"
|
|
=> [
|
|
"Attaches the local disk (backing block device) to the resource.",
|
|
"The disk must have been previously configured at",
|
|
"{create,join}-resource.",
|
|
"When designated as a primary, /dev/mars/\$res will also appear.",
|
|
"This does not change the state of {fetch,replay}.",
|
|
"For a complete local startup of the resource, use 'marsadm up'.",
|
|
\&attach_res_phase0,
|
|
"check preconditions",
|
|
\&attach_res_phase1,
|
|
"switch state",
|
|
\&attach_res_phase2,
|
|
"wait for effect",
|
|
],
|
|
"detach"
|
|
=> [
|
|
"Detaches the local disk (backing block device) from the",
|
|
"MARS resource.",
|
|
"Caution! you may read data from the local disk afterwards,",
|
|
"but ensure that no data is written to it!",
|
|
"Otherwise, you are likely to produce harmful inconsistencies.",
|
|
"When running in primary role, /dev/mars/\$res will also disappear.",
|
|
"This does not change the state of {fetch,replay}.",
|
|
"For a complete local shutdown of the resource, use 'marsadm down'.",
|
|
\&attach_res_phase0,
|
|
"check preconditions",
|
|
\&attach_res_phase1,
|
|
"switch state",
|
|
\&attach_res_phase2,
|
|
"wait for effect",
|
|
],
|
|
"resume-fetch-local"
|
|
=> [
|
|
"Start fetching transaction logfiles from the current",
|
|
"designated primary node, if there is one.",
|
|
"This is independent from any {pause,resume}-replay operations.",
|
|
"Only useful on a secondary node.",
|
|
\&fetch_local_res,
|
|
],
|
|
"resume-fetch-global"
|
|
=> [
|
|
"Like resume-fetch-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&fetch_global_res,
|
|
],
|
|
"resume-fetch"
|
|
=> [
|
|
"See resume-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"pause-fetch-local"
|
|
=> [
|
|
"Stop fetching transaction logfiles from the current",
|
|
"designated primary.",
|
|
"This is independent from any {pause,resume}-replay operations.",
|
|
"Only useful on a secondary node.",
|
|
\&fetch_local_res,
|
|
],
|
|
"pause-fetch-global"
|
|
=> [
|
|
"Like pause-fetch-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&fetch_global_res,
|
|
],
|
|
"pause-fetch"
|
|
=> [
|
|
"See pause-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"connect-local"
|
|
=> [
|
|
"See resume-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"connect-global"
|
|
=> [
|
|
"Like resume-fetch-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&fetch_global_res,
|
|
],
|
|
"connect"
|
|
=> [
|
|
"See resume-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"disconnect-local"
|
|
=> [
|
|
"See pause-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"disconnect-global"
|
|
=> [
|
|
"Like pause-fetch-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&fetch_global_res,
|
|
],
|
|
"disconnect"
|
|
=> [
|
|
"See pause-fetch-local.",
|
|
\&fetch_local_res,
|
|
],
|
|
"syncer" => \&ignore_cmd,
|
|
"up"
|
|
=> [
|
|
"Shortcut for attach + resume-sync + resume-fetch + resume-replay.",
|
|
\&up_res_phase0,
|
|
"check preconditions",
|
|
\&up_res_phase1,
|
|
"switch state",
|
|
\&up_res_phase2,
|
|
"wait for effect",
|
|
],
|
|
"down"
|
|
=> [
|
|
"Shortcut for detach + pause-sync + pause-fetch + pause-replay.",
|
|
\&up_res_phase0,
|
|
"check preconditions",
|
|
\&up_res_phase1,
|
|
"switch state",
|
|
\&up_res_phase2,
|
|
"wait for effect",
|
|
],
|
|
"primary"
|
|
=> [
|
|
"Promote the resource into primary role.",
|
|
"This is necessary for /dev/mars/\$res to appear on the local host.",
|
|
"Notice: by concept there can be only _one_ designated primary",
|
|
"in a cluster at the same time.",
|
|
"The role change is automatically distributed to the other nodes",
|
|
"in the cluster, provided that the network is healthy.",
|
|
"The old primary node will _automatically_ go",
|
|
"into secondary role first. This is different from DRBD!",
|
|
"With MARS, you don't need an intermediate 'secondary' command",
|
|
"for switching roles.",
|
|
"It is usually better to _directly_ switch the primary roles",
|
|
"between both hosts.",
|
|
"When --force is not given, a planned handover is started:",
|
|
"the local host will only become actually primary _after_ the",
|
|
"old primary is gone, and all old transaction logs have been",
|
|
"fetched and replayed at the new designated priamry.",
|
|
"When --force is given, no handover is attempted. A a consequence,",
|
|
"a split brain situation is likely to emerge.",
|
|
"Thus, use --force only after an ordinary handover attempt has",
|
|
"failed, and when you don't care about the split brain.",
|
|
"For more details, please refer to the PDF manual.",
|
|
\&primary_phase0,
|
|
"check preconditions",
|
|
\&primary_phase1,
|
|
"leave primary state",
|
|
\&primary_phase2,
|
|
"wait when necessary",
|
|
\&primary_phase3,
|
|
"switch to primary",
|
|
\&primary_phase4,
|
|
"wait for device",
|
|
],
|
|
"secondary"
|
|
=> [
|
|
"Promote all cluster members into secondary role, globally.",
|
|
"In contrast to DRBD, this is not needed as an intermediate step",
|
|
"for planned handover between an old and a new primary node.",
|
|
"The only reasonable usage is before the last leave-resource of the",
|
|
"last cluster member, immediately before leave-cluster is executed",
|
|
"for final deconstruction of the cluster.",
|
|
"In all other cases, please prefer 'primary' for direct handover",
|
|
"between cluster nodes.",
|
|
"Notice: 'secondary' sets the global designated primary node",
|
|
"to '(none)' which in turn prevents the execution of 'invalidate'",
|
|
"or 'join-resource' or 'resize' anywhere in the cluster.",
|
|
"Therefore, don't unnecessarily give 'secondary'!",
|
|
\&primary_phase0,
|
|
"check preconditions",
|
|
\&primary_phase1,
|
|
"leave primary state",
|
|
\&primary_phase4,
|
|
"wait for effect",
|
|
],
|
|
"invalidate"
|
|
=> [
|
|
"Only useful on a secondary node.",
|
|
"Forces MARS to consider the local replica disk as being",
|
|
"inconsistent, and therefore starting a fast full-sync from",
|
|
"the currently designated primary node (which must exist;",
|
|
"therefore avoid the 'secondary' command).",
|
|
"This is usually needed for resolving emergency mode.",
|
|
"When having k=2 replicas, this can be also used for",
|
|
"quick-and-simple split-brain resolution.",
|
|
"In other cases, or when the split-brain is not resolved by",
|
|
"this command, please use the 'leave-resource' / 'join-resource'",
|
|
"method as described in the PDF manual (in the right order as",
|
|
"described there).",
|
|
\&invalidate_res_phase0,
|
|
"check preconditions",
|
|
\&invalidate_res_phase1,
|
|
"stop old replay",
|
|
\&invalidate_res_phase2,
|
|
"wait for replay off",
|
|
\&invalidate_res_phase3,
|
|
"force symlinks",
|
|
],
|
|
"invalidate-remote" => \&forbidden_cmd,
|
|
"resize"
|
|
=> [
|
|
"Prerequisite: all underlying disks (usually /dev/vg/\$res) must",
|
|
"have been already increased, e.g. at the LVM layer (cf. lvresize).",
|
|
"Causes MARS to re-examine all sizing constraints on all members of",
|
|
"the resource, and increase the global logical size of the resource",
|
|
"accordingly.",
|
|
"Shrinking is currently not yet implemented.",
|
|
"When successful, /dev/mars/\$res at the primary will be increased",
|
|
"in size. In addition, all secondaries will start an incremental",
|
|
"fast full-sync to get the enlarged parts from the primary.",
|
|
\&resize_phase0,
|
|
"check preconditions",
|
|
\&resize_phase1,
|
|
"set new size",
|
|
\&resize_phase2,
|
|
"wait for change",
|
|
],
|
|
"check-resize" => \&ignore_cmd,
|
|
"create-md" => \&senseless_cmd,
|
|
"get-gi" => \&ignore_cmd,
|
|
"show-gi" => \&ignore_cmd,
|
|
"dump-md" => \&senseless_cmd,
|
|
"outdate" => \&ignore_cmd,
|
|
"adjust" => \&ignore_cmd,
|
|
"wait-connect"
|
|
=> [
|
|
"usage: wait-connect [<resource_name>]",
|
|
"See wait-cluster.",
|
|
\&wait_cluster,
|
|
],
|
|
"role"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated.",
|
|
"Please use the macro command 'view-role' instead.",
|
|
"For even better summary information, use plain 'view'.",
|
|
\&role_cmd,
|
|
],
|
|
"state"
|
|
=> [
|
|
"verbose 3",
|
|
"Deprecated.",
|
|
"Please use the macro command 'view-role' instead.",
|
|
"For even better summary information, use plain 'view'.",
|
|
\&role_cmd,
|
|
],
|
|
"cstate" => \&nyi_cmd,
|
|
"dstate" => \&nyi_cmd,
|
|
"status" => \&nyi_cmd,
|
|
"dump" => \&senseless_cmd,
|
|
"verify" => \&forbidden_cmd,
|
|
"pause-sync-local"
|
|
=> [
|
|
"Pause the initial data sync at current stage.",
|
|
"This has only an effect if a sync is actually running (i.e.",
|
|
"there is something to be actually synced).",
|
|
"Don't pause too long, because the local replica will remain",
|
|
"inconsistent during the pause.",
|
|
"Use this only for limited reduction of system load.",
|
|
"Only useful on a secondary node.",
|
|
\&pause_sync_local_res,
|
|
],
|
|
"pause-sync-global"
|
|
=> [
|
|
"Like pause-sync-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&pause_sync_global_res,
|
|
],
|
|
"pause-sync"
|
|
=> [
|
|
"See pause-sync-local.",
|
|
\&pause_sync_local_res,
|
|
],
|
|
"resume-sync-local"
|
|
=> [
|
|
"Resume any initial / incremental data sync at the stage where it",
|
|
"had been interrupted by pause-sync.",
|
|
"Only useful on a secondary node.",
|
|
\&pause_sync_local_res,
|
|
],
|
|
"resume-sync-global"
|
|
=> [
|
|
"Like resume-sync-local, but affects all resource members",
|
|
"in the cluster (remotely).",
|
|
\&pause_sync_global_res,
|
|
],
|
|
"resume-sync"
|
|
=> [
|
|
"See resume-sync-local.",
|
|
\&pause_sync_local_res,
|
|
],
|
|
"new-current-uuid" => \&senseless_cmd,
|
|
"hidden-commands" => \&ignore_cmd,
|
|
);
|
|
|
|
|
|
sub helplist {
|
|
my $msg = shift;
|
|
print "ERROR: $msg" if ($msg);
|
|
print "
|
|
Thorough documentation is in mars-manual.pdf. Please use the PDF manual
|
|
as authoritative reference! Here is only a short summary of the most
|
|
important sub-commands / options:
|
|
|
|
marsadm [<global_options>] <command> [<resource_name> | all | <args> ]
|
|
marsadm [<global_options>] view[-<macroname>] [<resource_name> | all ]
|
|
|
|
<global_option> =
|
|
--force
|
|
Skip safety checks.
|
|
Use this only when you really know what you are doing!
|
|
Warning! This is dangerous! First try --dry-run.
|
|
Not combinable with 'all'.
|
|
--dry-run
|
|
Don't modify the symlink tree, but tell what would be done.
|
|
Use this before starting potentially harmful actions such as
|
|
'delete-resource'.
|
|
--verbose
|
|
Increase speakyness of some commands.
|
|
--logger=/path/to/usr/bin/logger
|
|
Use an alternative syslog messenger.
|
|
When empty, disable syslogging.
|
|
--timeout=<seconds>
|
|
Abort safety checks after timeout with an error.
|
|
When giving 'all' as resource agument, this works for each
|
|
resource independently.
|
|
--window=<seconds>
|
|
Treat other cluster nodes as healthy when some communcation has
|
|
occured during the given time window.
|
|
--threshold=<bytes>
|
|
Some macros like 'fetch-threshold-reached' use this for determining
|
|
their sloppyness.
|
|
--host=<hostname>
|
|
Act as if the command was running on cluster node <hostname>.
|
|
Warning! This is dangerous! First try --dry-run
|
|
--ip=<ip>
|
|
Override the IP address stored in the symlink tree, as well as
|
|
the default IP determined from the list of network interfaces.
|
|
Usually you will need this only at 'create-cluster' or
|
|
'join-cluster' for resolving ambiguities.
|
|
--macro=<text>
|
|
Handy for testing short macro evaluations at the command line.
|
|
|
|
<command> =
|
|
";
|
|
my $item_count = 0;
|
|
foreach my $cmdname (sort(keys(%cmd_table))) {
|
|
my $list = $cmd_table{$cmdname};
|
|
next unless ref($list) eq "ARRAY";
|
|
my @copy = @$list;
|
|
my $line_count = 0;
|
|
my $verb_level = 0;
|
|
while (my $txt = shift @copy) {
|
|
last if ref($txt) eq "CODE";
|
|
my $skip_this = 0;
|
|
if ($txt =~ m/^verbose *([0-9]+)/) {
|
|
$verb_level = $1;
|
|
$skip_this = 1;
|
|
}
|
|
if ($verbose < 0) {
|
|
last if $verb_level != -$verbose;
|
|
} else {
|
|
last if $verb_level > $verbose;
|
|
}
|
|
next if $skip_this;
|
|
if (!$line_count) {
|
|
print "\n" if $item_count++;
|
|
print " $cmdname\n";
|
|
print " usage: $cmdname <resource_name>\n" if $txt !~ m/usage:/;
|
|
}
|
|
print " $txt\n";
|
|
$line_count++;
|
|
}
|
|
}
|
|
|
|
print "
|
|
<resource_name> = name of resource or \"all\" for all resources
|
|
";
|
|
|
|
print "
|
|
|
|
<macroname> = <complex_macroname> | <primitive_macroname>
|
|
|
|
<complex_macroname> =
|
|
";
|
|
foreach my $macroname (sort(keys(%complex_macros))) {
|
|
print " $macroname\n";
|
|
}
|
|
|
|
print "
|
|
|
|
<primitive_macroname> =
|
|
";
|
|
foreach my $glob (sort(keys(%trivial_globs))) {
|
|
my $txt = $trivial_globs{$glob};
|
|
print " $glob\n";
|
|
print " $txt\n" if $txt;
|
|
}
|
|
|
|
exit 0;
|
|
}
|
|
|
|
my @args;
|
|
|
|
foreach my $arg (@ARGV) {
|
|
if ($arg eq "--force" || $arg eq "-f") {
|
|
$force++;
|
|
next;
|
|
} elsif ($arg eq "--dry-run" || $arg eq "-d") {
|
|
$dry_run++;
|
|
next;
|
|
} elsif ($arg =~ s/--verbose\s*=\s*(-?[0-9]+)/$1/) {
|
|
$verbose = $arg;
|
|
next;
|
|
} elsif ($arg eq "--verbose" || $arg eq "-v") {
|
|
$verbose++;
|
|
next;
|
|
} elsif ($arg =~ s/--logger\s*=\s*(.*)/$1/) {
|
|
$logger = $arg;
|
|
next;
|
|
} elsif ($arg =~ s/--timeout\s*=\s*([0-9]+)/$1/) {
|
|
$timeout = $arg;
|
|
next;
|
|
} elsif ($arg =~ s/--window\s*=\s*([0-9]+)/$1/) {
|
|
$window = $arg;
|
|
next;
|
|
} elsif ($arg =~ s/--threshold\s*=\s*([0-9]+)/$1/) {
|
|
$threshold = get_size($arg);
|
|
next;
|
|
} elsif ($arg =~ s/--host\s*=\s*([-_A-Za-z0-9]+)/$1/) {
|
|
check_id($arg, 1);
|
|
if ($arg ne $host) {
|
|
lprint "ATTENTION: acting as if I were host '$arg'\n";
|
|
lwarn "some commands require local knowledge not available here.\n";
|
|
lwarn "thus something may fail or go wrong - use this at your risk!\n";
|
|
$host = $arg;
|
|
}
|
|
next;
|
|
} elsif ($arg =~ s/--ip\s*=\s*([0-9.:\[\]]+)/$1/) {
|
|
$ip = $arg;
|
|
lprint_stderr "Using IP '$ip' from command line.\n";
|
|
next;
|
|
} elsif ($arg =~ s/--macro\s*=\s*(.*)/$1/) {
|
|
$macro = $arg;
|
|
$macro =~ s/\\n/\n/mg;
|
|
next;
|
|
} elsif ($arg =~ m/^--help$/ || $arg =~ m/^-h$/) {
|
|
helplist;
|
|
next;
|
|
} elsif ($arg =~ m/^--version$/ || $arg =~ m/^-v$/) {
|
|
version;
|
|
next;
|
|
} elsif ($arg =~ m/^-(.*)/) {
|
|
ldie "unrecognized argument '-$1' (bad syntax)\n";
|
|
}
|
|
if ($arg =~ s/^force-//) {
|
|
$force++;
|
|
}
|
|
push @args, $arg;
|
|
}
|
|
|
|
my $cmd = shift @args || helplist "command argument is missing\n";
|
|
|
|
if ($cmd =~ m/^help$/ || $cmd =~ m/^h$/) {
|
|
helplist;
|
|
}
|
|
|
|
if ($cmd =~ m/^version$/ || $cmd =~ m/^v$/) {
|
|
version;
|
|
}
|
|
|
|
ldie "only root may use this tool\n" if $< != 0 && $cmd !~ m/^(cat|view.*|pretty.*)$/; # getpid() seems to be missing in perlfunc
|
|
helplist "unknown command $cmd\n" if (!exists $cmd_table{$cmd} && !$cmd =~ m/view/);
|
|
|
|
# setup syslogging
|
|
|
|
if ($cmd !~ m/^(version$|v$|view)/ && -x $logger) {
|
|
$notify = "(cmd: $cmd)";
|
|
my $print_id = $Id;
|
|
$print_id =~ s/\$|Id:| //g;
|
|
$print_id = substr($print_id, 0, 8);
|
|
llog "$print_id $host $0 @ARGV\n";
|
|
}
|
|
|
|
# checks
|
|
|
|
ldie "The $mars directory does not exist.\n" unless -d $mars;
|
|
|
|
my @mars_stat = stat($mars) or ldie "Cannot stat '$mars'\n";
|
|
# check uid
|
|
if ($mars_stat[4]) {
|
|
lwarn "Directory $mars has wrong owner uid $mars_stat[4].\n";
|
|
chown(0, 0, $mars) or ldie "Cannot chown $mars.\n";
|
|
lwarn "Fixed by setting to 0.\n";
|
|
}
|
|
# check permissions
|
|
my $perms = ($mars_stat[2] & 07777);
|
|
if ($perms != 0700) {
|
|
my $txt = sprintf("Directory $mars has wrong permissions 0%o.\n", $perms);
|
|
lwarn($txt);
|
|
chmod(0700, $mars) or ldie "Cannot chmod $mars.\n";
|
|
lwarn "Fixed to mode 0700 for security reasons.\n";
|
|
}
|
|
|
|
if ($cmd !~ m/(create|join)-cluster|create-uuid|cat|view|pretty/) {
|
|
my $uuid = get_link("$mars/uuid", 1);
|
|
ldie "No valid cluster UUID $mars/uuid found. You need {create,join}-cluster first (or create-uuid).\n" unless $uuid;
|
|
}
|
|
|
|
my $res = "";
|
|
if ($cmd =~ "show") {
|
|
$res = shift @args || "all";
|
|
} elsif ($cmd =~ m/^(view|pretty)/) {
|
|
$res = shift @args || "";
|
|
} elsif ($cmd =~ m/^set-.*-list$/) {
|
|
$res = shift @args || helplist "comma-separated list argument is missing\n";
|
|
} elsif ($cmd =~ m/^set-.*-value$/) {
|
|
$res = shift @args || helplist "numeric argument is missing\n";
|
|
ldie "argument '$res' isn't numeric\n" unless $res =~ m/^[0-9.]+$/;
|
|
} elsif (!($cmd =~ m/^(create|leave|wait)-cluster|create-uuid|cat|[a-z]+-file/)) {
|
|
$res = shift @args || helplist "resource argument is missing\n";
|
|
check_id($res);
|
|
}
|
|
|
|
|
|
lwarn "Using FORCE option -- hopefully you know what you are doing!\n" if $force;
|
|
|
|
my %checked_res;
|
|
|
|
sub do_one_res {
|
|
my $func = shift;
|
|
my ($cmd, $res) = @_;
|
|
if ($cmd =~ m/^cat|-file$|-list$|-link$|-value$/) { # no resource argument
|
|
} elsif (!$checked_res{"$cmd$res"}) {
|
|
$res = check_res($res) unless (!$res || $cmd =~ m/^(join|create|leave|wait)-cluster|create-resource|show/);
|
|
check_res_member($cmd, $res) unless (!$res || $cmd =~ m/^(join|create|delete)-(cluster|resource)|^(leave|wait)-cluster|^log-purge|^show|^view/);
|
|
detect_splitbrain($res, 1);
|
|
$checked_res{"$cmd$res"} = 1;
|
|
}
|
|
&{$func}(@_);
|
|
}
|
|
|
|
my %skip_res;
|
|
|
|
sub do_all_res {
|
|
my $func = shift;
|
|
my $cmd = shift;
|
|
my $res = shift;
|
|
if ($res eq "all" && $cmd !~ m/show|cat|cluster|set-link|delete-file/) {
|
|
ldie "Cannot combine command '$cmd' with 'all' existing resources - you must explicitly name a single new resource\n" if $cmd =~ m/create|join/;
|
|
my $any_success = 0;
|
|
my $any_member = 0;
|
|
foreach $res (glob("$mars/resource-*")) {
|
|
next unless -e "$res/data-$host";
|
|
$any_member++;
|
|
$res =~ s/^.*\/resource-(.*)$/$1/;
|
|
next if defined($skip_res{$res});
|
|
lprint "--------- resource $res\n" if ($verbose || $cmd !~ m/^log-/);
|
|
eval {
|
|
do_one_res($func, $cmd, $res, @_);
|
|
1;
|
|
} and $any_success = 1 or $skip_res{$res} = 1;
|
|
}
|
|
if (!$any_success) {
|
|
if (!$any_member) {
|
|
lprint "I am not member of any resource\n";
|
|
return 1;
|
|
}
|
|
ldie "all resources have errors\n";
|
|
}
|
|
return !$any_success;
|
|
} else {
|
|
return do_one_res($func, $cmd, $res, @_);
|
|
}
|
|
}
|
|
|
|
if ($cmd =~ m/^(view|pretty)/) {
|
|
lwarn "mars kernel module is not loaded\n" unless is_module_loaded();
|
|
do_all_res(\&view_cmd, $cmd, $res, @args);
|
|
if ($res eq "all" && $cmd =~ m/^view-?(.*)/) {
|
|
my $global_macro_name = $1 ? "$1-global" : "default-global";
|
|
my $global_macro = get_macro($global_macro_name, 1);
|
|
view_cmd($global_macro_name, "", @args) if $global_macro;
|
|
}
|
|
finish_links();
|
|
exit($error_count);
|
|
}
|
|
|
|
if (!$ip) {
|
|
$ip = _get_ip() or ldie "cannot determine my IP address\n";
|
|
}
|
|
|
|
my $func = $cmd_table{$cmd};
|
|
ldie "unknown command '$cmd'\n" unless $func;
|
|
|
|
if (ref($func) eq "ARRAY") {
|
|
my @list = @$func;
|
|
while (@list) {
|
|
my $memb_func = shift @list;
|
|
next unless ref($memb_func) eq "CODE";
|
|
my $headline = shift @list;
|
|
lprint "---------------------------- $headline:\n" if defined($headline);
|
|
my $status = do_all_res($memb_func, $cmd, $res, @args);
|
|
last if (defined($status) && $status);
|
|
finish_links();
|
|
}
|
|
} elsif (ref($func) eq "CODE") {
|
|
do_all_res($func, $cmd, $res, @args);
|
|
} else {
|
|
ldie "internal error: command table is wrong for '$cmd'";
|
|
}
|
|
|
|
finish_links();
|
|
|
|
exit($error_count);
|