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marsadm: fix split brain detection

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This commit is contained in:
Thomas Schoebel-Theuer 2018-10-22 10:47:32 +02:00
parent 0d579d48ba
commit 003ba4136f
1 changed files with 7 additions and 9 deletions
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16
userspace/marsadm
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@ -1434,22 +1434,20 @@ sub detect_splitbrain {
# dynamic programming
return $detected_splits{$res} if defined($detected_splits{$res});
my $basedir = "$mars/resource-$res";
my $retry = 2;
my $ok = 1;
my @list = glob("$mars/resource-$res/replay-*");
my @hosts = map { $_ =~ s:.*/replay-::; $_ } @list;
AGAIN:
foreach my $host1 (@hosts) {
foreach my $host2 (@hosts) {
next if $host1 ge $host2;
my ($point, $split, $size1, $size2) = get_common_ancestor($basedir, $host1, $host2);
if ($split) {
my ($point, $split, $size1, $size2);
for (my $retry = 2; $retry > 0; $retry--) {
($point, $split, $size1, $size2) = get_common_ancestor($basedir, $host1, $host2);
last if !$split;
# Workaround races.
if ($retry > 0) {
$retry--;
sleep(2);
next AGAIN;
}
sleep(0);
}
if ($split) {
$ok = 0;
if ($do_report) {
my $age = "";