snapshot backup not working

[wrt54gl]

I get this error when I try a snapshot backup:

INFO: starting new backup job: vzdump 100 --remove 0 --mode snapshot --compress lzo --storage backup --node vmh
INFO: Starting Backup of VM 100 (qemu)
INFO: status = running
INFO: mode failure - unable to dump into snapshot (use option --dumpdir)
INFO: trying 'suspend' mode instead
INFO: backup mode: suspend

The backup is successful however when I do the following command via ssh:

vzdump --dumpdir /mnt/backup --mode snapshot 100
INFO: starting new backup job: vzdump 100 --dumpdir /mnt/backup --mode snapshot
INFO: Starting Backup of VM 100 (qemu)
INFO: status = running
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: Logical volume "vzsnap-vmh-0" created
INFO: creating archive '/mnt/backup/vzdump-qemu-100-2012_05_07-09_50_20.tar'
INFO: adding '/mnt/backup/vzdump-qemu-100-2012_05_07-09_50_20.tmp/qemu-server.conf' to archive ('qemu-server.conf')
INFO: adding '/mnt/vzsnap0/images/100/vm-100-disk-1.raw' to archive ('vm-disk-virtio0.raw')

Is there a config file somewhere to set the options correctly for the web gui?

I am running proxmox 2.1 with my own RAID setup. I have kept the same lvm layout except that the volume group is named pve1 instead of pve.
I used the following howto:http://www.howtoforge.com/proxmox-2-with-software-raid

[tom]

post you /etc/pve/storage.cfg

and also your lvm setup (lvdisplay, pvdisplay)

[bougui]

I have the exact same question but with v 1.9 and I did not see anywhere, how I could subscribe to this thread so I'm adding my post ;-)

more /etc/pve/storage.cfg dir: local
path /var/lib/vz
content images,iso,vztmpl,rootdir


dir: Dump-containers
path /var/lib/vz/dump
shared
content backup


dir: les-iso
path /var/lib/vz/iso
shared
content iso

==> lvdisplay


--- Logical volume ---
LV Name /dev/pve/swap
VG Name pve
LV UUID Nzog3K-L6yD-pntT-qAsB-j0YZ-yvQl-MTR5An
LV Write Access read/write
LV Status available
# open 1
LV Size 7.00 GB
Current LE 1792
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0

--- Logical volume ---
LV Name /dev/pve/root
VG Name pve
LV UUID VgtNJn-q6Kn-CZmq-EA1S-mOXF-wtiC-bXxw7G
LV Write Access read/write
LV Status available
# open 1
LV Size 20.00 GB
Current LE 5120
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1

--- Logical volume ---
LV Name /dev/pve/data
VG Name pve
LV UUID cMtZnm-jdtr-mfkT-L4fx-E6ZB-Oxhp-Ghh3WY
LV Write Access read/write
LV Status available
# open 1
LV Size 665.25 GB
Current LE 170304
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2




==> pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name pve
PV Size 696.24 GB / not usable 837.00 KB
Allocatable yes
PE Size (KByte) 4096
Total PE 178238
Free PE 1022
Allocated PE 177216
PV UUID my4adC-KkvT-ljtY-as0E-NvQ6-EhRm-dvGxYT

thanks for any clue on this

[wrt54gl]

Here is my setup:

cat /etc/pve/storage.cfg
dir: local
path /var/lib/vz
content images,iso,vztmpl,rootdir

dir: backup
path /var/lib/vz/backup
content backup
maxfiles 3

lvdisplay
--- Logical volume ---
LV Path /dev/pve1/swap
LV Name swap
VG Name pve1
LV UUID c99idI-dMDT-iYRA-CLJH-59GG-fooH-qbGqir
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 11.00 GiB
Current LE 2816
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1

--- Logical volume ---
LV Path /dev/pve1/root
LV Name root
VG Name pve1
LV UUID UDqlVK-A3G6-fZ4k-BSQD-TiaU-Z7TW-y4vdK0
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 96.00 GiB
Current LE 24576
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0

--- Logical volume ---
LV Path /dev/pve1/data
LV Name data
VG Name pve1
LV UUID daNwG2-WlTu-k0FC-cIie-CcGf-voj9-vWmuW1
LV Write Access read/write
LV Creation host, time ,
LV Status available
# open 1
LV Size 354.27 GiB
Current LE 90694
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:3

pvdisplay
--- Physical volume ---
PV Name /dev/md1
VG Name pve1
PV Size 465.26 GiB / not usable 2.87 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 119106
Free PE 1020
Allocated PE 118086
PV UUID civUhd-GVaM-TKlo-Iutc-ITdH-AKRW-Rj2PrU

[tom]

> dir: backup
> path /var/lib/vz/backup

you cannot use a backup target under /var/lib/vz, this would create an infinite loop for LVM snapshots. use a backup target outside /var/lib/vz.

[tom]

more /etc/pve/storage.cfg dir: local
path /var/lib/vz
content images,iso,vztmpl,rootdir


dir: Dump-containers
path /var/lib/vz/dump
shared
content backup

you cannot mark local storage like /var/lib/vz/dump as "shared". its local storage and NOT shared so don´t mark it as shared.

backup: if you want LVM snapshots, you need to define a backup target outside /var/lib/vz

[bougui]

Thanks Tom.

Have a good day,

Guillaume

[wrt54gl]

Thanks Tom It all works perfectly now.