On 06/12/2014 10:35 AM, Julien Danjou wrote:
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.
This is news to me. When was this decided and where can I read about it?
Thanks,
-jay
_______________________________________________
OpenStack-dev mailing list
[email protected]
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
