Re: [openstack-dev] Nova quota statistics counting issue

2016-04-15 Thread Matt Riedemann
On 4/14/2016 3:07 PM, Andrew Laski wrote: On Wed, Apr 13, 2016, at 12:27 PM, Dmitry Stepanenko wrote: Hi Team, I worked on nova quota statistics issue (https://bugs.launchpad.net/nova/+bug/1284424) happenning when nova-* processes are restarted during removing instances and was able to reprodu

Re: [openstack-dev] Nova quota statistics counting issue

2016-04-14 Thread Andrew Laski
On Wed, Apr 13, 2016, at 12:27 PM, Dmitry Stepanenko wrote: > Hi Team, > I worked on nova quota statistics issue > (https://bugs.launchpad.net/nova/+bug/1284424) happenning when nova-* > processes are restarted during removing instances and was able to > reproduce it. For repro I used devstac

Re: [openstack-dev] Nova quota statistics counting issue

2016-04-14 Thread Salvatore Orlando
For what is worth neutron employs "resource trackers" which conceptually do something similar to nova quota usage statistics. Before starting any transaction that can potentially change usage for a given resource, the quota enforcement mechanism checks for a "dirty" marker on the resource tracker.

Re: [openstack-dev] Nova quota statistics counting issue

2016-04-14 Thread Timofei Durakov
Hi, I think it would be ok to store persistently quota details on compute side, as was discussed during mitaka mid-cycle[1] for migrations[2]. So if compute service fails we could restore state and update quota after compute restart. Timofey [1] - https://etherpad.openstack.org/p/mitaka-nova-pri

[openstack-dev] Nova quota statistics counting issue

2016-04-13 Thread Dmitry Stepanenko
Hi Team, I worked on nova quota statistics issue ( https://bugs.launchpad.net/nova/+bug/1284424) happenning when nova-* processes are restarted during removing instances and was able to reproduce it. For repro I used devstack and started nova-api and nova-compute in separate screen windows. For ki