On Thu, Jun 12 2014, Matthew Booth wrote: > We have a need for a distributed lock in the VMware driver, which I > suspect isn't unique. Specifically it is possible for a VMware datastore > to be accessed via multiple nova nodes if it is shared between > clusters[1]. Unfortunately the vSphere API doesn't provide us with the > primitives to implement robust locking using the storage layer itself, > so we're looking elsewhere.
The tooz library has been created for this purpose: https://pypi.python.org/pypi/tooz https://git.openstack.org/cgit/stackforge/tooz/ > Although I haven't worked through the detail, I believe lock and unlock > would be implementable in all 3 of the current service group drivers. > Fencing would be implemented separately. The plan is to leverage tooz to replace the Nova service group drivers, as this is also usable in a lot of others OpenStack services. -- Julien Danjou ;; Free Software hacker ;; http://julien.danjou.info
signature.asc
Description: PGP signature
_______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
