[libvirt-users] RBD images locking

[Daniel P. Berrange]

On Thu, Nov 07, 2013 at 09:08:58AM -0700, Eric Blake wrote:
> On 11/07/2013 09:04 AM, NEVEU Stephane wrote:
> > Eric,
> 
> [please don't top-post on technical lists]
> 
> > 
> > Well, in case where several servers may start the same virtual machines after a reboot for exemple.
> > http://lists.ceph.com/pipermail/ceph-users-ceph.com/2013-August/003887.html
> 
> Isn't the existing virtlockd support already sufficient for this?  If
> not, what is preventing the virtlock framework from interacting with rbd
> disks?

Nothing really. The current impl only deals with disks with type=file
or type=block, ignoring type=network. We could extend it to cope with
the latter though - either using a URI to uniquely identify the network
storage, or better yet using some unique volume ID if available.

Daniel
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