[pve-devel] [PATCH v2 qemu-server 1/3] vzdump: Add VM QGA option to skip fs-freeze/-thaw on backup

[Christoph Heiss <c.heiss@proxmox.com>]

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Changes v1 -> v2:
 * Rename option from 'fsfreeze_thaw' to 'freeze-fs-on-backup'
 * Adapt option description as suggested
 * Fix option check in qga_fs_freeze()

 PVE/QemuServer.pm        | 8 +++++++-
 PVE/VZDump/QemuServer.pm | 6 ++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index e4d1a70..20bdb36 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -160,7 +160,13 @@ my $agent_fmt = {
 	description => "Run fstrim after moving a disk or migrating the VM.",
 	type => 'boolean',
 	optional => 1,
-	default => 0
+	default => 0,
+    },
+    'freeze-fs-on-backup' => {
+	description => "Freeze/thaw guest filesystems on backup for consistency.",
+	type => 'boolean',
+	optional => 1,
+	default => 1,
     },
     type => {
 	description => "Select the agent type",
diff --git a/PVE/VZDump/QemuServer.pm b/PVE/VZDump/QemuServer.pm
index 0eb5ec6..30baa46 100644
--- a/PVE/VZDump/QemuServer.pm
+++ b/PVE/VZDump/QemuServer.pm
@@ -862,6 +862,12 @@ sub qga_fs_freeze {
 	return;
     }

+    my $freeze = PVE::QemuServer::get_qga_key($self->{vmlist}->{$vmid}, 'freeze-fs-on-backup') // 1;
+    if (!$freeze) {
+	$self->loginfo("skipping guest-agent 'fs-freeze', disabled in VM options");
+	return;
+    }
+
     $self->loginfo("issuing guest-agent 'fs-freeze' command");
     eval { mon_cmd($vmid, "guest-fsfreeze-freeze") };
     $self->logerr($@) if $@;
--
2.39.1