cinder/releasenotes/notes/feature-rbd-exclusive-pool-...

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---
features:
- |
When using the RBD pool exclusively for Cinder we can now set
`rbd_exclusive_cinder_pool` to `true` and Cinder will use DB information
to calculate provisioned size instead of querying all volumes in the
backend, which will reduce the load on the Ceph cluster and the volume
service.
issues:
- |
If RBD stats collection is taking too long in your environment maybe even
leading to the service appearing as down you'll want to use the
`rbd_exclusive_cinder_pool = true` configuration option if you are using
the pool exclusively for Cinder and maybe even if you are not and can live
with the innacuracy.