RepoMirrors
/
mars
mirror of https://github.com/schoebel/mars
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

marsadm: fix split brain prevention on handover

This commit is contained in:
Thomas Schoebel-Theuer 2014-09-25 23:55:25 +02:00
parent 9ad2664d3c
commit 04c8985961
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
userspace/marsadm
View File

@ -902,6 +902,20 @@ sub try_to_avoid_splitbrain {
my $vers_glob = sprintf("$mars/resource-$res/version-%09d-*", $max); my $vers_glob = sprintf("$mars/resource-$res/version-%09d-*", $max);
for (;;) { for (;;) {
my $ok = 1; 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 $own_vers = sprintf("$mars/resource-$res/version-%09d-$host", $max);
if (!get_link($own_vers, 2)) {
$ok = 0;
}
my @versions = glob($vers_glob); my @versions = glob($vers_glob);
my $first = get_link(shift @versions); my $first = get_link(shift @versions);
while (@versions) { while (@versions) {
@ -912,6 +926,7 @@ sub try_to_avoid_splitbrain {
} }
last if $ok; last if $ok;
lprint "trying to avoid split brain: logfile update not yet completed.\n"; lprint "trying to avoid split brain: logfile update not yet completed.\n";
view_cmd("replinfo", $res);
sleep_timeout(); sleep_timeout();
} }
} }