Re: [libvirt-users] lockmanager for use with clvm
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(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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