[Gluster-users] gluster and kvm livemigration

[James]

Not sure if it's related at all, but is there any chance this has anything
to do with:

https://bugzilla.redhat.com/show_bug.cgi?id=987555

It came to mind as something to do with glusterfs+libvirt+migration.

HTH,
James



On Thu, Jan 16, 2014 at 5:52 AM, Bernhard Glomm
<bernhard.glomm at ecologic.eu>wrote:

> I experienced a strange behavior of glusterfs during livemigration
> of a qemu-kvm guest
> using a 10GB file on a mirrored gluster 3.4.2 volume
> (both on ubuntu 13.04)
> I run
> virsh migrate --verbose --live --unsafe --p2p --domain atom01 --desturi
> qemu+ssh://<target_ip>/system
> and the migration works,
> the running machine is pingable and keeps sending pings.
> nevertheless, when I let the machine touch a file during migration
> it stops, complaining that it's filesystem is read only (from that moment
> that
> migration finished)
> A reboot from inside the machine failes,
> machine goes down and comes up with an error
> unable to write to sector xxxxxx on hd0
> (than falling into the initrd).
> a
> virsh destroy VM && virsh start VM
> leads to a perfect running VM again,
> no matter on which of the two hosts I start the machine
> anybody better experience with livemigration?
> any hint on a procedure how to debug that?
> TIA
> Bernhard
>
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