Comment 1 for bug 2034933

Some more info: change If94facd5a926f7eadd092dfc8f0368d8e4b8d630 assumes that the 'container' parameter functions the same for all backup drivers, but that is not the case. For Ceph (RBD) in particular, the 'container' is actually a pool, and these can only be created by the cloud operator. Thus when the RBD backup driver is used, the backup-create request is accepted with a 202, but when the backup service tries to use the 'container', it discovers that it does not exist, and the backup correctly goes to error status. But this makes the test fail, which has broken the cinder gate.