Excerpts from Joshua Harlow's message of 2013-10-28 09:01:44 -0700: > Except I think the CAP theorem would say that u can't accurately give back > there quota under thing like network partitions. > > If nova-compute and the message queue have a network partition then u can > release there quota but can't actually delete there vms. I would actually > prefer to not release there quota, but then this should be a deployer > decision and not a one size fits all decision (IMHO). >
CAP encourages convergence models to satisfy problems with consistency. Quotas and records of allocated resources are records of intention and we can converge the physical resources with the expressed intentions later. The speed with which you do that is part of the cost of network partition failures and should be considered when assessing and mitigating risk. It is really bad customer service to tell somebody "Yes I know you've asked me to stop charging you, but my equipment has failed so I MUST keep charging you." Reminds me of that gym membership I tried to cancel... _TRIED_. _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
