There was a bug [1] in the release notes [2] which had incorrect commands for upgrading the snapshot format of an existing CephFS file system which has had snapshots enabled at some point. The correction is here [3]: diff --git a/doc/releases/mimic.rst b/doc/releases/mimic.rst index 137d56311c..3a3345bbc0 100644 --- a/doc/releases/mimic.rst +++ b/doc/releases/mimic.rst @@ -346,8 +346,8 @@ These changes occurred between the Luminous and Mimic releases. previous max_mds" step in above URL to fail. To re-enable the feature, either delete all old snapshots or scrub the whole filesystem: - - ``ceph daemon <mds of rank 0> scrub_path /`` - - ``ceph daemon <mds of rank 0> scrub_path '~mdsdir'`` + - ``ceph daemon <mds of rank 0> scrub_path / force recursive repair`` + - ``ceph daemon <mds of rank 0> scrub_path '~mdsdir' force recursive repair`` - Support has been added in Mimic for quotas in the Linux kernel client as of v4.17. The release notes on the blog have already been updated. If you executed the wrong commands already, it should be sufficient to run the correct commands once more to fix the file system. [1] https://tracker.ceph.com/issues/24435 [2] https://ceph.com/releases/v13-2-0-mimic-released/ [3] https://github.com/ceph/ceph/pull/22445/files -- Patrick Donnelly