Gorka Eguileor 253f9ea67b Remove API races from consistency groups ...

There is a potential window of opportunity where races can happen in the
API on consistency group related actions, this patch removes those
windows of opportunity using compare-and-swap for DB updates.

Races have been removed in following actions:

- create
- delete
- update
- create_cgsnapshot
- delete_cgsnapshot

Specs: https://review.openstack.org/232599/

Implements: blueprint cinder-volume-active-active-support
Change-Id: I67aec4cd8bcf2f7e09473a8d296aa383fe85ad23

2016-06-01 17:18:06 +02:00

9.4 KiB

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