VZDump - speed

[Willüüü]

Hi,

I using vzdump to backup my containers with lvm2 but the performance is not what I was expecting. I already try to increase the bwlimit to 20000(20MB/s)
but the maximal performance is still 13 MiB/s. On my Hardware-Node is only one container located, so I think this can't be a I/O problem.

ICP-Vortex 5085BL 4 * SATA - RAID 6.

Many thanks

 

[tom]

Hi,

I using vzdump to backup my containers with lvm2 but the performance is not what I was expecting. I already try to increase the bwlimit to 20000(20MB/s)
but the maximal performance is still 13 MiB/s. On my Hardware-Node is only one container located, so I think this can't be a I/O problem.

ICP-Vortex 5085BL 4 * SATA - RAID 6.

Many thanks

what is the result of 'pveperf'? pls run this command when the server is not under load.

raid controller: did you enable the cache (write-back)?

 

[Willüüü]

what is the result of 'pveperf'? pls run this command when the server is not under load.

raid controller: did you enable the cache (write-back)?

Hi Tom,

where can I download the tool pveperf? I using CentOS 5.3 as my hardware node operating system with the latest OpenVZ Kernel.

Write Cache is disabled.

regards

 

[tom]

Hi Tom,

where can I download the tool pveperf? I using CentOS 5.3 as my hardware node operating system with the latest OpenVZ Kernel.

Write Cache is disabled.

regards

you are posting in the mail gateway forum, so I assumed you are using it.

pls confirm: you just run vzdump on a centos? no Proxmox VE or Mail Gateway involved?

but it you disable write cache, so the results are expected. Enable it, add a BBU and the results will be better.

 

[Willüüü]

Hi Tom,

yes I'm using CentOS not the Proxmox Mailgateway. I'm try to enable the write cache.

Regards - Willi