Slow vzdump

  • Thread starter Thread starter christophe charron
  • Start date Start date
C

christophe charron

Guest
Hello,

I have a Proxmox server that runs very well with a few virtual machines that spin very well too.
But the problem, in my opinion, at backups.
That night i made "only" 1 hour 40 minutes to save a machine 26go what seems to me quite a lot.
The previous night, I rebooted the server because after 4 hours, a backup of 40GB was not yet complete.

and you? it takes how long, how you think you are?

below the record

vzdump --quiet --node 1 --suspend --dumpdir /backup/vzdump 106 107

106: aoû 25 00:00:08 INFO: Starting Backup of VM 106 (openvz)
106: aoû 25 00:00:08 INFO: status = CTID 106 exist mounted running

106: aoû 25 00:00:08 INFO: starting first sync /var/lib/vz/private/106 to /tampon/tmp/vzdumptmp9304
106: aoû 25 00:53:36 INFO: Number of files: 289966
106: aoû 25 00:53:36 INFO: Number of files transferred: 262185

106: aoû 25 00:53:36 INFO: Total file size: 28306928219 bytes
106: aoû 25 00:53:36 INFO: Total transferred file size: 27945008337 bytes
106: aoû 25 00:53:36 INFO: Literal data: 27945008337 bytes
106: aoû 25 00:53:36 INFO: Matched data: 0 bytes

106: aoû 25 00:53:36 INFO: File list size: 7698780
106: aoû 25 00:53:36 INFO: File list generation time: 0.001 seconds
106: aoû 25 00:53:36 INFO: File list transfer time: 0.000 seconds
106: aoû 25 00:53:36 INFO: Total bytes sent: 27967346830

106: aoû 25 00:53:36 INFO: Total bytes received: 5105696
106: aoû 25 00:53:36 INFO: sent 27967346830 bytes received 5105696 bytes 8718233.61 bytes/sec
106: aoû 25 00:53:36 INFO: total size is 28306928219 speedup is 1.01

106: aoû 25 00:53:36 INFO: first sync finished (3208 seconds)
106: aoû 25 00:53:36 INFO: suspend vps
106: aoû 25 00:53:36 INFO: Setting up checkpoint...
106: aoû 25 00:53:36 INFO: suspend...
106: aoû 25 00:53:36 INFO: get context...

106: aoû 25 00:53:36 INFO: Checkpointing completed succesfully
106: aoû 25 00:53:36 INFO: final sync /var/lib/vz/private/106 to /tampon/tmp/vzdumptmp9304
106: aoû 25 00:54:43 INFO: Number of files: 289966
106: aoû 25 00:54:43 INFO: Number of files transferred: 0

106: aoû 25 00:54:43 INFO: Total file size: 28306928219 bytes
106: aoû 25 00:54:43 INFO: Total transferred file size: 0 bytes
106: aoû 25 00:54:43 INFO: Literal data: 0 bytes
106: aoû 25 00:54:43 INFO: Matched data: 0 bytes

106: aoû 25 00:54:43 INFO: File list size: 7698780
106: aoû 25 00:54:43 INFO: File list generation time: 0.001 seconds
106: aoû 25 00:54:43 INFO: File list transfer time: 0.000 seconds
106: aoû 25 00:54:43 INFO: Total bytes sent: 7721616

106: aoû 25 00:54:43 INFO: Total bytes received: 22835
106: aoû 25 00:54:43 INFO: sent 7721616 bytes received 22835 bytes 114732.61 bytes/sec
106: aoû 25 00:54:43 INFO: total size is 28306928219 speedup is 3655.12

106: aoû 25 00:54:43 INFO: final sync finished (67 seconds)
106: aoû 25 00:54:43 INFO: resume vps
106: aoû 25 00:54:43 INFO: Resuming...
106: aoû 25 00:54:43 INFO: vps is online again after 67 seconds
106: aoû 25 00:55:35 INFO: creating archive '/backup/vzdump/vzdump-106.dat' (/tampon/tmp/vzdumptmp9304/106)

106: aoû 25 01:40:37 INFO: Nombre total d'octets écrits: 28320266240 (27GiB, 11MiB/s)
106: aoû 25 01:40:37 INFO: file size 26.38GB
106: aoû 25 01:44:49 INFO: Finished Backup of VM 106 (01:44:48)

107: aoû 25 01:44:49 INFO: Starting Backup of VM 107 (openvz)

107: aoû 25 01:44:49 INFO: status = CTID 107 exist mounted running
107: aoû 25 01:44:49 INFO: starting first sync /var/lib/vz/private/107 to /tampon/tmp/vzdumptmp9304
107: aoû 25 01:48:18 INFO: Number of files: 83537

107: aoû 25 01:48:18 INFO: Number of files transferred: 70849
107: aoû 25 01:48:18 INFO: Total file size: 1358708483 bytes
107: aoû 25 01:48:18 INFO: Total transferred file size: 1355387487 bytes
107: aoû 25 01:48:18 INFO: Literal data: 1355387487 bytes

107: aoû 25 01:48:18 INFO: Matched data: 0 bytes
107: aoû 25 01:48:18 INFO: File list size: 1874377
107: aoû 25 01:48:18 INFO: File list generation time: 0.001 seconds
107: aoû 25 01:48:18 INFO: File list transfer time: 0.000 seconds

107: aoû 25 01:48:18 INFO: Total bytes sent: 1360495738
107: aoû 25 01:48:18 INFO: Total bytes received: 1408669
107: aoû 25 01:48:18 INFO: sent 1360495738 bytes received 1408669 bytes 6500737.03 bytes/sec
107: aoû 25 01:48:18 INFO: total size is 1358708483 speedup is 1.00

107: aoû 25 01:48:18 INFO: first sync finished (209 seconds)
107: aoû 25 01:48:18 INFO: suspend vps
107: aoû 25 01:48:18 INFO: Setting up checkpoint...
107: aoû 25 01:48:18 INFO: suspend...
107: aoû 25 01:48:18 INFO: get context...

107: aoû 25 01:48:18 INFO: Checkpointing completed succesfully
107: aoû 25 01:48:18 INFO: final sync /var/lib/vz/private/107 to /tampon/tmp/vzdumptmp9304
107: aoû 25 01:48:21 INFO: Number of files: 83537
107: aoû 25 01:48:21 INFO: Number of files transferred: 0

107: aoû 25 01:48:21 INFO: Total file size: 1358708483 bytes
107: aoû 25 01:48:21 INFO: Total transferred file size: 0 bytes
107: aoû 25 01:48:21 INFO: Literal data: 0 bytes
107: aoû 25 01:48:21 INFO: Matched data: 0 bytes

107: aoû 25 01:48:21 INFO: File list size: 1874377
107: aoû 25 01:48:21 INFO: File list generation time: 0.001 seconds
107: aoû 25 01:48:21 INFO: File list transfer time: 0.000 seconds
107: aoû 25 01:48:21 INFO: Total bytes sent: 1882121

107: aoû 25 01:48:21 INFO: Total bytes received: 7743
107: aoû 25 01:48:21 INFO: sent 1882121 bytes received 7743 bytes 539961.14 bytes/sec
107: aoû 25 01:48:21 INFO: total size is 1358708483 speedup is 718.95

107: aoû 25 01:48:21 INFO: final sync finished (3 seconds)
107: aoû 25 01:48:21 INFO: resume vps
107: aoû 25 01:48:21 INFO: Resuming...
107: aoû 25 01:48:21 INFO: vps is online again after 3 seconds
107: aoû 25 01:48:21 INFO: creating archive '/backup/vzdump/vzdump-107.dat' (/tampon/tmp/vzdumptmp9304/107)

107: aoû 25 01:50:37 INFO: Nombre total d'octets écrits: 1420646400 (1,4GiB, 11MiB/s)
107: aoû 25 01:50:37 INFO: file size 1.32GB
107: aoû 25 01:50:47 INFO: Finished Backup of VM 107 (00:05:58)
Click to expand...
Do you have any idea to make it faster ? Is it the right time ?

Cordially,
Christophe Charron
 
vzdump uses a bandwidth limit (10MB/s default). You can set that in /etc/vzdump.conf, for example (20MB/s):

bwlimit: 20000

see 'man vzdump'
 
dietmar said:
vzdump uses a bandwidth limit (10MB/s default). You can set that in /etc/vzdump.conf, for example (20MB/s):

bwlimit: 20000

see 'man vzdump'
Click to expand...
Thanks.
I'll tell you about it, after this night vzdump.

--
Cordially,
Christophe Charron
 
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