forked from rook/rook
Clean up stale CRUSH rules after the Ceph mgr starts so rules left behind by pool failure-domain or device-class changes do not accumulate indefinitely.
The cleanup is guarded by a package-level RWMutex. Pool create and update paths hold the read lock while creating and assigning CRUSH rules, while cluster-wide cleanup holds the write lock before listing pools and deleting unused rules. This keeps pool reconciles parallel with each other while preventing cleanup from deleting a rule that another reconcile has just created but not yet attached to a pool.
Keep direct pool-delete cleanup for the pool's current CRUSH rule, make the cluster-wide cleanup best-effort across all unused rules, and add an operator-level ROOK_DELETE_UNUSED_CRUSH_RULES setting for clusters that need to leave unused custom rules in place.
Document the operator and Helm settings, regenerate the Helm chart docs, and add a pending release note for the default cleanup behavior.
Signed-off-by: Asish Kumar <officialasishkumar@gmail.com>
(cherry picked from commit 24a35e4e74)