qcow2 snapshot backup?

[deepc]

How should a snapshot backup work with qcow2 files?
Does vzdump use the qcow2 snapshot functions?

When I do a backup i get this log:

Nov 11 19:30:02 INFO: Starting Backup of VM 107 (qemu)
Nov 11 19:30:02 INFO: running
Nov 11 19:30:02 INFO: status = running
Nov 11 19:30:02 INFO: mode failure - unable to dump into snapshot (use option --dumpdir)
Nov 11 19:30:02 INFO: trying 'suspend' mode instead
Nov 11 19:30:02 INFO: backup mode: suspend
Nov 11 19:30:02 INFO: ionice priority: 7
Nov 11 19:30:03 INFO: suspend vm
Nov 11 19:30:03 INFO: creating archive '/var/backup/vzdump-qemu-107-2010_11_11-19_30_02.tgz'
Nov 11 19:30:03 INFO: adding '/var/backup/vzdump-qemu-107-2010_11_11-19_30_02.tmp/qemu-server.conf' to archive ('qemu-server.conf')
Nov 11 19:30:03 INFO: adding '/var/lib/vz/images/107/vm-107-disk-1.qcow2' to archive ('vm-disk-ide0.qcow2')
Nov 11 19:30:32 INFO: Total bytes written: 357509120 (11.72 MiB/s)
Nov 11 19:30:32 INFO: archive file size: 188MB
Nov 11 19:30:32 INFO: delete old backup '/var/backup/vzdump-qemu-107-2010_11_11-19_09_01.tgz'
Nov 11 19:30:32 INFO: resume vm
Nov 11 19:30:32 INFO: vm is online again after 29 seconds
Nov 11 19:30:32 INFO: Finished Backup of VM 107 (00:00:30)

 

[tom]

vzdump uses LVM snapshots.

where is your backup location? is this the local disk? (/var/backup/)

post the output of:

pvdisplay

 

[deepc]

Yes its /var/backup and its on the same lv as the file to backup.
Could that be a problem?

pvdisplay
  --- Physical volume ---
  PV Name               /dev/md1
  VG Name               vg_main
  PV Size               931.04 GB / not usable 832.00 KB
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              238345
  Free PE               127201
  Allocated PE          111144
  PV UUID               Vgsjcs-3vzh-4c6N-WVp1-kASP-KMeH-bsKeCP

 

[tom]

yes.