vzdump sbs2008

[MGUS]

Hi,

first of all sry for my bad english, hope you can understand my problem..

Problem is, it takes ages to make a snapshot of my sbs2008 vm (tested with an xp vm - no problem, openvz - no problem).

I startet a snapshot yesterday at 4:45pm and aborted it today at 7:30am.

I have no idea where to start searching for bottlenecks or something else.

Detailed backup logs:
vzdump --quiet --snapshot --dumpdir /mnt/pve/backup_nas/ --mailto admin@*****.de 102
102: Aug 23 16:48:02 INFO: Starting Backup of VM 102 (qemu)
102: Aug 23 16:48:02 INFO: running
102: Aug 23 16:48:02 INFO: status = running
102: Aug 23 16:48:02 INFO: backup mode: snapshot
102: Aug 23 16:48:02 INFO: bandwidth limit: 10240 KB/s
102: Aug 23 16:48:03 INFO: Logical volume "vzsnap-proxmox-0" created
102: Aug 23 16:48:03 INFO: creating archive '/mnt/pve/backup_nas/vzdump-qemu-102-2010_08_23-16_48_02.tar'
102: Aug 23 16:48:03 INFO: adding '/mnt/pve/backup_nas/vzdump-qemu-102-2010_08_23-16_48_02.tmp/qemu-server.conf' to archive ('qemu-server.conf')
102: Aug 23 16:48:03 INFO: adding '/mnt/vzsnap0/images/102/vm-102-disk-1.raw' to archive ('vm-disk-ide0.raw')
102: Aug 24 07:35:33 INFO: received signal - terminate process
102: Aug 24 07:35:33 INFO: archive file size: 31.96GB
102: Aug 24 07:35:34 INFO: /dev/dm-4: read failed after 0 of 4096 at 0: Input/output error
102: Aug 24 07:35:34 INFO: Logical volume "vzsnap-proxmox-0" successfully removed
102: Aug 24 07:36:00 INFO: Finished Backup of VM 102 (14:47:58)

Here is a log from a successful backup (xp -vm)

vzdump --quiet --snapshot --dumpdir /mnt/pve/backup_nas/ --tmpdir /mnt/pve/backup_nas/ --mailto admin@******.de 103
103: Aug 24 08:38:27 INFO: Starting Backup of VM 103 (qemu)
103: Aug 24 08:38:27 INFO: running103: Aug 24 08:38:27 INFO: status = running
103: Aug 24 08:38:28 INFO: backup mode: snapshot
103: Aug 24 08:38:28 INFO: bandwidth limit: 10240 KB/s
103: Aug 24 08:38:28 INFO: Logical volume "vzsnap-proxmox-0" created
103: Aug 24 08:38:28 INFO: creating archive '/mnt/pve/backup_nas/vzdump-qemu-103-2010_08_24-08_38_27.tar'
103: Aug 24 08:38:28 INFO: adding '/mnt/pve/backup_nas/vzdumptmp10522/qemu-server.conf' to archive ('qemu-server.conf')
103: Aug 24 08:38:28 INFO: adding '/mnt/vzsnap0/images/103/vm-103-disk-1.raw' to archive ('vm-disk-ide0.raw')
103: Aug 24 08:57:23 INFO: Total bytes written: 10115809280 (8.50 MiB/s)
103: Aug 24 08:57:57 INFO: archive file size: 9.42GB
103: Aug 24 08:57:57 INFO: delete old backup '/mnt/pve/backup_nas/vzdump-qemu-103-2010_08_21-20_00_02.tar'
103: Aug 24 08:58:01 INFO: Logical volume "vzsnap-proxmox-0" successfully removed
103: Aug 24 08:58:01 INFO: Finished Backup of VM 103 (00:19:34)

Server Info:

pveversion -v
pve-manager: 1.5-10 (pve-manager/1.5/4822)
running kernel: 2.6.18-2-pve
proxmox-ve-2.6.18: 1.5-5
pve-kernel-2.6.18-2-pve: 2.6.18-5
qemu-server: 1.1-16
pve-firmware: 1.0-5
libpve-storage-perl: 1.0-13
vncterm: 0.9-2
vzctl: 3.0.23-1pve11
vzdump: 1.2-5
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm-2.6.18: 0.9.1-5

pveperf
CPU BOGOMIPS: 17066.46
REGEX/SECOND: 772862
HD SIZE: 94.49 GB (/dev/pve/root)
BUFFERED READS: 192.79 MB/sec
AVERAGE SEEK TIME: 9.01 ms
FSYNCS/SECOND: 2901.94
DNS EXT: 51.49 ms
DNS INT: 1.09 ms

 

[MGUS]

me again..

i think i've found something in syslog:


Aug 23 17:42:36 proxmox kernel: device-mapper: snapshots: Invalidating snapshot: Unable to allocate exception.
Aug 23 17:42:41 proxmox kernel: Aborting journal on device dm-4.
Aug 23 17:42:41 proxmox kernel: Buffer I/O error on device dm-4, logical block 229376514
Aug 23 17:42:41 proxmox kernel: lost page write due to I/O error on dm-4
Aug 23 17:42:42 proxmox kernel: ext3_abort called.
Aug 23 17:42:42 proxmox kernel: EXT3-fs error (device dm-4): ext3_journal_start_sb: Detected aborted journal
Aug 23 17:42:42 proxmox kernel: Remounting filesystem read-only


may it help to set size: 2048 or (4096) in vzdump.conf


thx for your help

 

[dietmar]

may it help to set size: 2048 or (4096) in vzdump.conf

Yes, I guess that will help.

 

[MGUS]

ok,

now it works, only a little more Speed and everything is good. Only have to play a little bit with bwlimit and so...

3:38 for about 128GB, thats ok for the moment.

thx