Article ID: 113801, created on May 2, 2012, last review on Jun 17, 2016

  • Applies to:
  • Virtuozzo containers for Linux 4.7

Symptoms

A container backup fails with Acronis Error: Module=0, Error=0, Tag=0:

[root@mypvcserver ~]# vzabackup localhost
Starting backup operation for node 'mypvcserver.mydomain.com'...
* Operation with the Container(s) srv.mydomain.com,#101,ns1.mydomain.com is started
* Backing up environment srv.mydomain.com locally
* Checking parameters
* Dumping quota
* Creating backup 8a33d65b-98f5-1643-bb3f-6e0ec6b6e260/20120414064310
* Adjusting backup type (full)
* Backup storage: receiving backup file
* Preparing for backup operation
* 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

Cause

The container may be using an old (pre-PVC 4.0) layout.
Old layout example:

[root@mypvcserver ~]# ls -al /vz/private/103
total 28 
drwxr-xr-x 7  root root 4096 Feb 20 2011  .
drwxr-xr-x 55 root root 4096 Apr 23 11:36 ..
drwxrwxrwx 2  root root 4096 Aug 31 2007  cow
drwxr-xr-x 22 root root 4096 Apr 2  20:39 root
drwxr-xr-x 6  root root 4096 Aug 31 2007  templates
lrwxrwxrwx 1  root root 7    Jul 13 2007  VERSION -> 005.003
drwxr-xr-x 2  root root 4096 Feb 7  2011  .vza
drwxr-xr-x 2  root root 4096 Feb 20 2011  vzagent

New layout example:

[root@mypvcserver ~]# ls -al /vz/private/104
total 36
drwxr-xr-x 6  root root 4096 Apr 23 12:50 .
drwxr-xr-x 55 root root 4096 Apr 23 11:36 ..
drwxr-xr-x 2  root root 4096 Feb 13 20:57 dump
drwx------ 6  root root 4096 Sep 21 2011  fs
-rw-r--r-- 1  root root 0    Feb 13 20:57 .lck
-rw-r--r-- 1  root root 22   Apr 11 20:15 .owner
-rw------- 1  root root 3408 Apr 25 05:10 quota.fs
drwxr-xr-x 2  root root 4096 Feb 13 20:57 scripts
lrwxrwxrwx 1  root root 12   Apr 11 20:14 templates -> fs/templates
-rw-r--r-- 1  root root 768  Apr 23 12:50 ve.conf
lrwxrwxrwx 1  root root 1    Apr 11 20:14 .ve.layout -> 4
drwxr-xr-x 2  root root 4096 Feb 13 20:57 .vza

Resolution

Convert containers to VZFS4 using this article:

  • 115553 How to convert VZFS3 containers to VZFS4

Also see

  • 8133 How to increase PVA Agent timeouts for backup operations
  • 113790 PVA Backup: Servers, roles, and processes
  • 113794 Unable to back up containers on LVM over iSCSI
  • 113802 Unable to back up large container: Acronis Error: Module=0 Code=0, Tag=0

Search Words

Acronis Error: Module=0, Error=0, Tag=0

Failed to start the file backup

old layout

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