Backup/ Restore failing

jac2703

New Member
Apr 3, 2012
26
0
1
Hi Guys,

I am having issues with the backup and restore functionality in Proxmox when working with VMs.

I have a qcow2 single disk VM which is about 12 GB in use (actual space consumed on the host) of a possible 64GB. The guest is Windows Server 2008 R2 with some extra 3rd party software installed.

I hit the backup button in the Proxmox GUI and use 'Snapshot' and 'LZO'. The backup completes without a hiccup. I then try and restore the backup to a new VMID and I get the below error.

Code:
restore vma archive: lzop -d -c /var/lib/vz/dump/vzdump-qemu-100-2013_03_11-11_11_29.vma.lzo|vma extract -v -r /var/tmp/vzdumptmp898202.fifo - /var/tmp/vzdumptmp898202CFG: size: 277 name: qemu-server.conf
DEV: dev_id=1 size: 68719476736 devname: drive-virtio0
CTIME: Mon Mar 11 11:11:31 2013
Formatting '/mnt/vm/images/998/vm-998-disk-1.qcow2', fmt=qcow2 size=68719476736 encryption=off cluster_size=65536 preallocation='metadata' lazy_refcounts=off 
new volume ID is 'VM:998/vm-998-disk-1.qcow2'
map 'drive-virtio0' to '/mnt/vm/images/998/vm-998-disk-1.qcow2' (write zeros = 0)
progress 1% (read 687210496 bytes, duration 1 sec)
progress 2% (read 1374420992 bytes, duration 4 sec)
progress 3% (read 2061631488 bytes, duration 6 sec)
progress 4% (read 2748841984 bytes, duration 8 sec)
progress 5% (read 3435986944 bytes, duration 10 sec)
progress 6% (read 4123197440 bytes, duration 13 sec)
progress 7% (read 4810407936 bytes, duration 15 sec)
progress 8% (read 5497618432 bytes, duration 18 sec)
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progress 24% (read 16492724224 bytes, duration 32 sec)
progress 25% (read 17179869184 bytes, duration 35 sec)
progress 26% (read 17867079680 bytes, duration 38 sec)
progress 27% (read 18554290176 bytes, duration 40 sec)
lzop: /var/lib/vz/dump/vzdump-qemu-100-2013_03_11-11_11_29.vma.lzo: Compressed data violation


** ERROR **: restore failed - short vma extent (2939392 < 3801600)
aborting...
/bin/bash: line 1: 898204 Exit 1                  lzop -d -c /var/lib/vz/dump/vzdump-qemu-100-2013_03_11-11_11_29.vma.lzo
     898205 Aborted                 | vma extract -v -r /var/tmp/vzdumptmp898202.fifo - /var/tmp/vzdumptmp898202
temporary volume 'VM:998/vm-998-disk-1.qcow2' sucessfuly removed
TASK ERROR: command 'lzop -d -c /var/lib/vz/dump/vzdump-qemu-100-2013_03_11-11_11_29.vma.lzo|vma extract -v -r /var/tmp/vzdumptmp898202.fifo - /var/tmp/vzdumptmp898202' failed: exit code 134

I have repeated the backup a few times, and even tried it on 2 different VMs. One one, small VM (about 3GB of host disk used) the backup works fine but on another similar size (13GB) it fails every time.

Does anyone have any idea what is doing on?
 

dietmar

Proxmox Staff Member
Staff member
Apr 28, 2005
16,803
408
103
Austria
www.proxmox.com
I tried it without compression and it works fine!

And the resulting file is OK? test with

# vma verify -v <archive.vma>

Note: You need to update your installation to get latest available packages in order to use that command.
 

jac2703

New Member
Apr 3, 2012
26
0
1
And the resulting file is OK? test with

# vma verify -v <archive.vma>

Note: You need to update your installation to get latest available packages in order to use that command.

When using no compression this returns fine.

Code:
vma verify -v vzdump-qemu-template.vmaCFG: size: 277 name: qemu-server.conf
DEV: dev_id=1 size: 68719476736 devname: drive-virtio0
CTIME: Tue Mar 12 09:01:57 2013
progress 1% (read 687210496 bytes, duration 5 sec)
progress 2% (read 1374420992 bytes, duration 11 sec)
...
progress 100% (read 68719476736 bytes, duration 282 sec)
total bytes read 68719476736, sparse bytes 38922518528 (56.6%)
space reduction due to 4K zero bocks 0.775%
 

jac2703

New Member
Apr 3, 2012
26
0
1
What error do you get when you use gzip (instead of lzo)?

I did a test on the lzo with lzop and the result was:
Code:
root@rmvm1:/var/lib/backup/dump# lzop -v -t vzdump-qemu-100-2013_03_12-16_45_42.vma.lzotesting vzdump-qemu-100-2013_03_12-16_45_42.vma.lzo
lzop: vzdump-qemu-100-2013_03_12-16_45_42.vma.lzo: Checksum error
 FAILED

I also created a gz - this isn't really usable for me due to the size of the image however for testing the result is:
Code:
[COLOR=#000000][FONT=tahoma]progress 31% (read 21303066624 bytes, duration 161 sec)[/FONT][/COLOR]

[COLOR=#000000][FONT=tahoma]** ERROR **: restore failed - wrong vma extent header chechsum[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]aborting...[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]/bin/bash: line 1:  3000 Broken pipe             zcat /var/lib/backup/dump/vzdump-qemu-100-2013_03_12-17_10_28.vma.gz[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]      3001 Aborted                 | vma extract -v -r /var/tmp/vzdumptmp2997.fifo - /var/tmp/vzdumptmp2997[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]temporary volume 'VM:101/vm-101-disk-1.qcow2' sucessfuly removed[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]TASK ERROR: command 'zcat /var/lib/backup/dump/vzdump-qemu-100-2013_03_12-17_10_28.vma.gz|vma extract -v -r /var/tmp/vzdumptmp2997.fifo - /var/tmp/vzdumptmp2997' failed: exit code 13[/FONT][/COLOR]

I don't know if it has any influence on this but i did a qemu-convert image.qcow2 -O qcow2 newimage.qcow2 and used the new image, just as a basic test on the qcow2 image. As I say, I don't know if this is a test or not but I assumed qemu-image would error if there was an issue with the actual image.

Any other ideas?
 

jac2703

New Member
Apr 3, 2012
26
0
1
I would test on another hardware (Maybe your memory or the disk is damaged).

OK, so I have tried this on another machine, however it has exactly the same components. So, it is a different machine, but each component is the same on both machines. There are no fancy storage controlers or NICs - they are just i7 consumer boxes. The same issue exists - I cannot restore backups.

It seems that since the 2.3 update, something has changed which is not playing nice with the hardware.
 

kingofquick

Guest
I'm having the same issue as well. see below. I've tried multiple times and when using LZO, it errors out on the restore. (the backup completes fine).

restore vma archive: lzop -d -c /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_15-15_38_56.vma.lzo|vma extract -v -r /var/tmp/vzdumptmp7508.fifo - /var/tmp/vzdumptmp7508
CFG: size: 323 name: qemu-server.conf
DEV: dev_id=1 size: 32212254720 devname: drive-virtio1
CTIME: Fri Mar 15 15:38:57 2013
Formatting '/mnt/pve/Storage_nfs_proxmox/images/105/vm-105-disk-1.raw', fmt=raw size=32212254720
new volume ID is 'Storage_nfs_proxmox:105/vm-105-disk-1.raw'
map 'drive-virtio1' to '/mnt/pve/Storage_nfs_proxmox/images/105/vm-105-disk-1.raw' (write zeros = 0)
progress 1% (read 322174976 bytes, duration 1 sec)
progress 2% (read 644284416 bytes, duration 3 sec)
progress 3% (read 966393856 bytes, duration 4 sec)
progress 4% (read 1288503296 bytes, duration 6 sec)
progress 5% (read 1610612736 bytes, duration 8 sec)
progress 6% (read 1932787712 bytes, duration 9 sec)
progress 7% (read 2254897152 bytes, duration 12 sec)
progress 8% (read 2577006592 bytes, duration 14 sec)
progress 9% (read 2899116032 bytes, duration 15 sec)
progress 10% (read 3221225472 bytes, duration 17 sec)
progress 11% (read 3543400448 bytes, duration 18 sec)
progress 12% (read 3865509888 bytes, duration 47 sec)
progress 13% (read 4187619328 bytes, duration 53 sec)
progress 14% (read 4509728768 bytes, duration 55 sec)
progress 15% (read 4831838208 bytes, duration 57 sec)
progress 16% (read 5154013184 bytes, duration 58 sec)
progress 17% (read 5476122624 bytes, duration 59 sec)
progress 18% (read 5798232064 bytes, duration 61 sec)
progress 19% (read 6120341504 bytes, duration 63 sec)
progress 20% (read 6442450944 bytes, duration 65 sec)
lzop: /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_15-15_38_56.vma.lzo: Checksum error

** ERROR **: restore failed - short vma extent (2881536 < 3703296)
aborting...
/bin/bash: line 1: 7510 Exit 1 lzop -d -c /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_15-15_38_56.vma.lzo
7511 Aborted | vma extract -v -r /var/tmp/vzdumptmp7508.fifo - /var/tmp/vzdumptmp7508
temporary volume 'Storage_nfs_proxmox:105/vm-105-disk-1.raw' sucessfuly removed
TASK ERROR: command 'lzop -d -c /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_15-15_38_56.vma.lzo|vma extract -v -r /var/tmp/vzdumptmp7508.fifo - /var/tmp/vzdumptmp7508' failed: exit code 134
 

dietmar

Proxmox Staff Member
Staff member
Apr 28, 2005
16,803
408
103
Austria
www.proxmox.com
I'm having the same issue as well. see below. I've tried multiple times and when using LZO, it errors out on the restore.

Does it work when you backup to local storage instead of NFS? And what if you use gzip instead of lzo?
 

kingofquick

Guest
Dietmar,

The backup and restore from the local storage works fine (used LZO).


However, restoring from NFS backup using gzip, it produces an error:

Code:
[COLOR=#000000][FONT=tahoma]restore vma archive: zcat /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_16-22_31_28.vma.gz|vma extract -v -r /var/tmp/vzdumptmp78681.fifo - /var/tmp/vzdumptmp78681[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]CFG: size: 323 name: qemu-server.conf[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]DEV: dev_id=1 size: 32212254720 devname: drive-virtio1[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]CTIME: Sat Mar 16 22:31:29 2013[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]Formatting '/mnt/pve/Storage_nfs_proxmox/images/100/vm-100-disk-1.raw', fmt=raw size=32212254720 [/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]new volume ID is 'Storage_nfs_proxmox:100/vm-100-disk-1.raw'[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]map 'drive-virtio1' to '/mnt/pve/Storage_nfs_proxmox/images/100/vm-100-disk-1.raw' (write zeros = 0)[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]progress 1% (read 322174976 bytes, duration 2 sec)[/FONT][/COLOR]
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[COLOR=#000000][FONT=tahoma]gzip: /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_16-22_31_28.vma.gz: invalid compressed data--crc error[/FONT][/COLOR]
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[COLOR=#000000][FONT=tahoma]temporary volume 'Storage_nfs_proxmox:100/vm-100-disk-1.raw' sucessfuly removed[/FONT][/COLOR]
[COLOR=#000000][FONT=tahoma]TASK ERROR: command 'zcat /mnt/pve/Storage_nfs_proxmox/dump/vzdump-qemu-103-2013_03_16-22_31_28.vma.gz|vma extract -v -r /var/tmp/vzdumptmp78681.fifo - /var/tmp/vzdumptmp78681' failed: exit code 1




[/FONT][/COLOR]
 

adamjseed

New Member
Feb 13, 2012
17
0
1
Hi,

I too am having the issue above on one of my proxmox machines, but works on another. I have ran a memtest on both machines which comes back fine.

Problem Machine on 2.3 proxmox
Intel Core i7 3820 3.6GHz Socket 2011
Asus P9X79 PRO Socket 2011
4x G-Skill 8GB (2x4GB) DDR3 2133MHz RipjawsX 32gb total

Working Machine on 2.3 proxmox
Intel Core i7 2600k 3.4GHz Socket 1155
Asus Maximus IV Gene-Z Z68 Socket 1155
2x G-Skill 8GB (2x4GB) DDR3 2133MHz RipjawsX 16gb total


On the problem machine the backup seems to compress just fine, but then an error results when extracting.
 

adamjseed

New Member
Feb 13, 2012
17
0
1
Im just using the vanilla setup and backing up to /var/lib/vz, which happens to be a 1tb WD black drive. I have also tried backing up to a OCZ Vertex 4 SSD I have in there on /mnt/vm.
 

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