On 02/23/2012 04:56 AM, Michael Menge wrote:
Hi,
i am setting up a cluster of kvm hypervisors managed with libvirt. The storage pool is on iscsi with clvm. To prevent that a vm is started on more than one hypervisor, I want to use a lockmanager with libvirt.
I could only find sanlock as lockmanager, but AFSIK sanlock will not work in my setup as I don't have a shared filesystem. I have dlm running for clvm. Are there lockmanager implementations that use dlm? Or other implementations that can be used in my setup?
The lock manager framework is designed to be extensible, although Dan Berrange's early attempts at an fcntl-manager [1] have not been touched in a couple months due to other more pressing issues. No one has written a manager for dlm, but it would be an interesting addition if you would like to step in and contribute code; and the fcntl-manager attempt should serve as a good starting point of how to do it. [1] https://www.redhat.com/archives/libvir-list/2011-July/msg00347.html -- Eric Blake eblake@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org