High Load on the Ceph Cluster Being Used for Cinder

Problem

You are observing increased IOPS to the Ceph clusters especially for the Cinder pool.

Environment

  • Platform9 Managed OpenStack - All Versions

Cause

Cinder queries the Ceph cluster periodically to gather data regarding the Cinder backends, volumes and the snapshots present on the Cinder__pool.

Resolution

  1. Add the rbd_exclusive_cinder_pool property to the cinder_override.conf file across all your Cinder hosts. This property needs to be added to the backend configuration stanza.
Javascript
Copy
  1. Restart the pf9-cindervolume-base service for the changes to take effect
Javascript
Copy

Additional Information

The value for the property is going to be set to True by default starting with the Wallaby release as per the OpenStack release notes.

Type to search, ESC to discard
Type to search, ESC to discard
Type to search, ESC to discard