Symptoms
Backup creation fails immediately for all containers with the following error:
[root@mypvcserver log]# vzabackup localhost
Starting backup operation for node 'mypvcserver.mydomain.com'...
...
* Operation with the Container(s) srv.mydomain.com,#101,ns1.mydomain.com is finished with errors: Failed to start the file backup
Acronis Error: Module=0 Code=0, Tag=0,.
Backup operation for node 'mypvcserver.mydomain.com' failed: Failed to start the file backup
Acronis Error: Module=0 Code=0, Tag=0,
Backup failed
/vz
volume is located on iSCSI partition:
[root@mypvcserver ~]# mount | grep vz | grep mapper
/dev/mapper/mypvcserver on /vz type ext3 (rw,_netdev,noatime)
The _netdev
mount option tells us that the volume is located on an iSCSI drive.
Cause
The inability to backup containers, located on iSCSI volume, is recognized as a product bug with internal ID PVA-32618.
Resolution
Fixed permanently in PVA 4.6.4 Update 3 (release 4.6-1875).
As a workaround, it is possible to switch off snapshot creation:
Edit the PVA Agent configuration file:
~# vi /vz/pva/agent/etc/vzagent.conf
(or)
~# vi /var/opt/pva/agent/etc/vzagent.conf
Change the
enable_snapshot
value to 0:vzlin_backup_serializer
(for pre-PVA 4.6.4 nodes):<vzlin_backup_serializer> <configuration> <backend>1</backend> <enable_snapshot>0</enable_snapshot> <--------- !!! <custom> <queue>0</queue> <heavy_timeout_limit>360000</heavy_timeout_limit> </custom> </configuration> </vzlin_backup_serializer>
vzlin_backup_serializer11
(for PVA 4.6.4 and later):<vzlin_backup_serializer11> <configuration> <backend>1</backend> <enable_snapshot>0</enable_snapshot> <--------- !!! <custom> <pool>0</pool> <queue>0</queue> <heavy_timeout_limit>360000</heavy_timeout_limit> </custom> </configuration> </vzlin_backup_serializer11>
Restart PVA Agent:
~# pvaagent restart