vzdump speed

[obrienmd]

A couple of questions about Proxmox 1.5 (2.6.32) kvm backups via vzdump:

1) While the log shows that vzdump is limited to 10240 KB/s, my lvm snapshot backups finish with speeds ranging from 10.19 MiB/s to 22.39 MiB/s. Given some flexibility to convert from KB to MiB, 10.19 seems about right, but I can't explain all the results (many) so far about 10240 KB/s. Does the limiter really work?

2) If the limiter does indeed work, how can I modify it? I saw a reference to a config file in another thread, but I was not able to find that config file in my Proxmox VE server's etc directory.

Thanks for any help!

 

[l.mierzwa]

2) If the limiter does indeed work, how can I modify it? I saw a reference to a config file in another thread, but I was not able to find that config file in my Proxmox VE server's etc directory.

Thanks for any help!

create /etc/vzdump.conf config file with bwlimit=<limit>, se "man vzdump" for list of all options

 

[obrienmd]

create /etc/vzdump.conf config file with bwlimit=<limit>, se "man vzdump" for list of all options

Got it, worked great, I see that the new bw limit is mentioned in the vzdump log e-mailed to me. However, the limit is still not being honored (ie MiB/s speed mentioned after "Total bytes written: xxxxx" still often exceeds bw limit by unreasonable amount). Thoughts?

 

[l.mierzwa]

This might interest You http://forum.proxmox.com/threads/3607-vzdump-speed-is-incorrect

 

[obrienmd]

This might interest You http://forum.proxmox.com/threads/3607-vzdump-speed-is-incorrect

Ah, I see. Thanks very much!