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marsadm: tighten try_to_avoid_splitbrain

This commit is contained in:
Thomas Schoebel-Theuer 2020-07-18 10:56:44 +02:00 committed by Thomas Schoebel-Theuer
parent 752ed6397f
commit c0154f2e06
1 changed files with 6 additions and 4 deletions
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@ -2684,6 +2684,10 @@ sub try_to_avoid_splitbrain {
}
# if the old primary is known, we can ignore all other / unrelated hosts
if ($primary && $primary ne $host && $primary ne "(none)") {
my $path_p = "$mars/resource-$res/replay-$primary";
my $path_h = "$mars/resource-$res/replay-$host";
my $replay_p = get_link($path_p);
my $replay_h = get_link($path_h);
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);
@ -2692,10 +2696,6 @@ sub try_to_avoid_splitbrain {
# Safeguard against artificial or missing version links
# (e.g. after crashes etc):
# when replay links are equal, we are safe.
my $path_p = "$mars/resource-$res/replay-$primary";
my $path_h = "$mars/resource-$res/replay-$host";
my $replay_p = get_link($path_p);
my $replay_h = get_link($path_h);
my $stamp_p = get_link_stamp($path_p);
my $stamp_h = get_link_stamp($path_h);
my $p_stamp = get_link_stamp($p_path);
@ -2711,6 +2711,8 @@ sub try_to_avoid_splitbrain {
} else {
$ok = 0;
}
} elsif (!$replay_p || !$replay_h || $replay_p ne $replay_h) {
$ok = 0;
}
} else {
# old primary is unknown: we have no chance, other than comparing _all_ versions.