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Storage: add method volume_rollback_is_possible

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add method volume_rollback_is_possible and redactor
Improve error handling
If snapshot is not reversible catch it before vm will lock and shutdown.
This is the case if zfs has an younger snapshot.

Signed-off-by: Wolfgang Link <w.link@proxmox.com>
This commit is contained in:
Wolfgang Link
2015-02-12 08:41:35 +01:00
committed by Dietmar Maurer
parent a4034b9f19
commit 1597f1f9ad
4 changed files with 35 additions and 9 deletions
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7
PVE/Storage/ZFSPlugin.pm
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@ -311,11 +311,8 @@ sub volume_snapshot_rollback {
my ($class, $scfg, $storeid, $volname, $snap) = @_;
# abort rollback if snapshot is not the latest
my $recentsnap = $class->zfs_get_latest_snapshot($scfg, $volname);
if ($snap ne $recentsnap) {
die "cannot rollback, more recent snapshots exist\n";
}
$class->volume_rollback_is_possible($scfg, $storeid, $volname, $snap);
$class->zfs_delete_lu($scfg, $volname);
$class->zfs_request($class, $scfg, undef, 'rollback', "$scfg->{pool}/$volname\@$snap");