OpenVZ Bug 2206 - Resolved

[letic]

Hey guys,

We were migrating our old Promox 1.9 2.6.24 hosts to brand new server with Proxmox 1.9 2.6.32 (before migrating to 2.0) and are encoutering this bug : http://bugzilla.openvz.org/show_bug.cgi?id=2206

Did anybody got the same issue ? Maybe a working workaround ?

We are trying to test a downgrade to 2.6.24 on these new servers but we don't know if the hardware will be supported by it.

I am going to post on the openVZ ticket as well to try to get some news.

Thanks in advance for any help.
LeTic

 

[letic]

Re: OpenVZ Bug 2206

Ok as I had no answers from the openVZ dev I tried to debug the issue myself (see here for the long story) and found the following :

The issue is apparently affecting only :
- hosts with several cores/CPUs running any version of the 2.6.32-openvz kernel (tested with debian squeeze, proxmox 1.9, proxmox 2.0 and vanilla patched kernel).
- (debian) guests with only one CPU

But I did found two solutions/workarounds :
- Affect more than 1 CPU to the guest
- Give CPU affinity (--cpumask) to the guest

This was quite tricky to debug so I hope this might help other people stuck with the same problem. Unfortunately once you know what the solution is you always find people who found the same In any case it cannot hurt to have more documentation about this )

LeTic