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