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use qemu's blockdev-snapshot functions

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Instead of our own. The code is almost the same, but the
upstream implementation uses qemu's transactional system and
performs a drain() on the block device first. This seems to
help avoid some issues we run into with qcow2 files when
creating snapshots.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2018-09-24 10:44:22 +02:00 committed by Thomas Lamprecht
parent babecffe00
commit eba2b72199
2 changed files with 4 additions and 2 deletions
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2
PVE/QMPClient.pm
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@ -126,6 +126,8 @@ sub cmd {
$cmd->{execute} eq 'query-savevm' ||
$cmd->{execute} eq 'delete-drive-snapshot' ||
$cmd->{execute} eq 'guest-shutdown' ||
$cmd->{execute} eq 'blockdev-snapshot-internal-sync' ||
$cmd->{execute} eq 'blockdev-snapshot-delete-internal-sync' ||
$cmd->{execute} eq 'snapshot-drive' ) {
$timeout = 10*60; # 10 mins ?
} else {

4
PVE/QemuServer.pm
View File

@ -4288,7 +4288,7 @@ sub qemu_volume_snapshot {
my $running = check_running($vmid);
if ($running && do_snapshots_with_qemu($storecfg, $volid)){
vm_mon_cmd($vmid, "snapshot-drive", device => $deviceid, name => $snap);
vm_mon_cmd($vmid, 'blockdev-snapshot-internal-sync', device => $deviceid, name => $snap);
} else {
PVE::Storage::volume_snapshot($storecfg, $volid, $snap);
}
@ -4310,7 +4310,7 @@ sub qemu_volume_snapshot_delete {
}
if ($running && do_snapshots_with_qemu($storecfg, $volid)){
vm_mon_cmd($vmid, "delete-drive-snapshot", device => $deviceid, name => $snap);
vm_mon_cmd($vmid, 'blockdev-snapshot-delete-internal-sync', device => $deviceid, name => $snap);
} else {
PVE::Storage::volume_snapshot_delete($storecfg, $volid, $snap, $running);
}