VZDump Backup Insufficient free extents

[JanK]

Hi,
I want to backup my VMs with vzdump.
The storage for the snapshots is a NAS system, so I mounted it:

# mount
/dev/mapper/debian-root on / type ext3 (rw,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
/dev/sda1 on /boot type ext2 (rw)
//172.8.1.31/server_backups on /mnt/backup type cifs

In the Proxmox WebGUI:
Storage -> Add Directory -> Directory: /mnt/backup and Content: VZDump Backups
New Backup Job, but I get an error:

Apr 23 02:00:03 INFO: Starting Backup of VM 103 (qemu)
Apr 23 02:00:04 INFO: running
Apr 23 02:00:04 INFO: status = running
Apr 23 02:00:04 INFO: backup mode: snapshot
Apr 23 02:00:04 INFO: bandwidth limit: 10240 KB/s
Apr 23 02:00:04 INFO:   Insufficient free extents (0) in volume group debian: 256 required
Apr 23 02:00:04 ERROR: Backup of VM 103 failed - command 'lvcreate --size 1024M --snapshot --name 'vzsnap-debian-0' '/dev/debian/root'' failed with exit code 5

# lvdisplay

  --- Logical volume ---
  LV Name                /dev/debian/root
  VG Name                debian
  LV UUID                vWif9u-OxW1-gD15-fqd3-0FkQ-nNlB-iSXGrA
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                288,47 GB
  Current LE             73849
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:0

  --- Logical volume ---
  LV Name                /dev/debian/swap_1
  VG Name                debian
  LV UUID                fIcOGe-1r3d-JfoY-1dfd-a1zE-6May-NQ4cbP
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                9,38 GB
  Current LE             2400
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:1

# pvdisplay

  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               debian
  PV Size               297,85 GB / not usable 3,67 MB
  Allocatable           yes (but full)
  PE Size (KByte)       4096
  Total PE              76249
  Free PE               0
  Allocated PE          76249
  PV UUID               62sxv1-qYAH-sqcH-xjus-d5dk-PkBo-f10UJ7

In the log:

 'vzsnap-debian-0' [U]'/dev/debian/root''[/U]  failed with exit code 5

Why /dev/devian/root?
The backup should be on /mnt/backup and this is an external NAS. So I don't need extra space on the host or whatever this exactly means.

I think I misunderstand something, can somebody help me?

 

[dietmar]

Why /dev/devian/root?

The VM disk is resides on /dev/debian/root (this does not look like a standard installation).

And you selected snapshot mode, which needs free space on the volume group.

 

[kmcdaniel]

Was there ever a solution to this? I have this same issue.

 

[dietmar]

Was there ever a solution to this? I have this same issue.

New backup in 2.3 does not need LVM anymore.