CephFS Async Mirroring
There is a way to backup CephFS file systems by running a mirror daemon (cephfs-mirror) which takes the subvolumes and performs an asynchronous replication of snapshots to a remote CephFS file system [1]. A share for Manila is a subvolume in CephFS.
This is analagous to but different from Manila's own share replication. Share replication is done on a per-share basis, and there is no straightforward way to plugin CephFS mirroring solution as there is no way to manage an automatic failover.
A possible way to implement this is by referencing Cinder's spec [2] where Cinder provides a common mechanism for exposing replication functionality on a per volume basis.
[1] https:/
[2] https:/
Blueprint information
- Status:
- Not started
- Approver:
- None
- Priority:
- Undefined
- Drafter:
- Ashley Rodriguez
- Direction:
- Needs approval
- Assignee:
- None
- Definition:
- New
- Series goal:
- None
- Implementation:
- Unknown
- Milestone target:
- None
- Started by
- Completed by