Article ID: 113794, created on Apr 28, 2012, last review on Jun 17, 2016

  • Applies to:
  • Virtuozzo containers for Linux
  • Virtuozzo hypervisor
  • Virtual Automation

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
    

Search Words

Container backup fails with Acronis Error: Module=0, Error=0, Tag=0:

iSCSI

LVM

2897d76d56d2010f4e3a28f864d69223 e8e50b42231236b82df27684e7ec0beb d02f9caf3e11b191a38179103495106f a26b38f94253cdfbf1028d72cf3a498b 319940068c5fa20655215d590b7be29b

Email subscription for changes to this article
Save as PDF