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marsadm: disallow resize to smaller size

This commit is contained in:
Thomas Schoebel-Theuer 2013-05-07 16:41:52 +02:00
parent 54a8eb31f5
commit 6964573aa3
1 changed files with 13 additions and 0 deletions
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13
userspace/marsadm
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@ -152,13 +152,24 @@ sub check_res {
return $res;
}
sub check_sizes {
my ($res, $host) = @_;
my $logical_size = get_link("$mars/resource-$res/size");
my $physical_size = get_link("$mars/resource-$res/actsize-$host", 1);
if (defined($physical_size) && $physical_size < $logical_size) {
ldie "physical device on host '$host' has size $physical_size, which is smaller than the logical resource size $logical_size\n";
}
}
sub check_res_member {
my $res = shift;
ldie "sorry, I have not yet joined to resource '$res'\n" unless -e "$mars/resource-$res/data-$host";
check_sizes($res, $host);
}
sub check_sync_finished {
my ($res, $host) = @_;
check_sizes(@_);
my $lnk = "$mars/resource-$res/syncstatus-$host";
if (lstat($lnk)) {
my $syncstatus = get_link($lnk, 1);
@ -1063,6 +1074,8 @@ sub resize_res {
$new_size = $min_size if !$new_size;
lprint "new_size=$new_size\n";
ldie "new size $new_size is higher than the minimum size of all volumes $min_size" if $new_size > $min_size; # no override with --force possible
# for now, disallow decreasing until some bugs are fixed
ldie "only increases of the size are possible!\n" if $new_size < $old_size;
ldie "only increases of the size are possible without --force\n" if $new_size <= $old_size && !$force;
foreach my $switch (glob("$mars/resource-$res/todo-*/sync")) {
my $this_switch = get_link($switch);