Article ID: 126215, created on Jul 16, 2015, last review on Jul 16, 2015

  • Applies to:
  • Virtuozzo


Parallels Dispatcher shows wrong size of the backup on NFS share

[root@pcs ~]# prlctl backup-list {9f8b9874-8beb-4bbe-aa91-a6eb4d7557f4}
                                    ID Backup_ID                              Node                 Date                 Type       Size
{9f8b9874-8beb-4bbe-aa91-a6eb4d7557f4} {e70f1b0c-ec9e-4845-bf1e-c3b5dce202b0} test.vm 12/29/2014 22:11:14     f      18985

[root@nodevps01 ~]# du -sh /backup/\{9f8b9874-8beb-4bbe-aa91-a6eb4d7557f4\}/\{e70f1b0c-ec9e-4845-bf1e-c3b5dce202b0\}/
4.8G    /backup/{9f8b9874-8beb-4bbe-aa91-a6eb4d7557f4}/{e70f1b0c-ec9e-4845-bf1e-c3b5dce202b0}/

In the example above backup-list shows the backup size is 18 KB, while it is 4.8GB in fact.


NFS by default caches attributes, when Parallels Dispatcher scan the backup folder it receives cached size value.


noac option need to be added to the mount options, e.g.:

[root@pcs ~]# mount -t nfs /backup -o soft,noac
[root@pcs ~]# grep nfs /etc/fstab        /backup nfs     defaults,soft,noac     0 0

Search Words

empty backup

vm backup size

size full backup vm only 18.54kb

2897d76d56d2010f4e3a28f864d69223 0dd5b9380c7d4884d77587f3eb0fa8ef

Email subscription for changes to this article
Save as PDF