Problems pve-kernel-3.10.0-5-pve and live migration

[adoII]

Hi,

we recently switched pve-kernel-3.10.0-5-pve from pve-no-subscription repository because ceph documentation states that more recent kernels are better for ceph-performance.

Unfortunately live migration is not reliable when migrating vms between proxmox hosts running pve-kernel-3.10.0-5-pve.

This can easily be reproduced. Run 4 live migrations, at least 1 wil fail, sometimes they succeed, sometimes they don't.
The vms will hang and the vm-statusis shown as internal-error. the interface will say migration succeeded.

As soon as we reboot the same servers with kernel pve-kernel-2.6.32-34-pve live migrations are work reliably
What is the status of 3.10 kernel in proxmox, is it supported or not ?

Any idea how I can reliably live migrate my vms from machines running pve-kernel-3.10.0-5 back to hosts running 2.6.32 ? I do not want to reboot my vms.

Thanks
Christoph

 

[e100]

I have had a few issues with 3.10 but live migration from 2.6.32 -> 3.10 or 3.10 -> 3.10 have worked fine for me.

It is not possible to reliably live migrate from 3.10 -> 2.6.32, I always shutdown the VM, do an offline migration and then start it.