Dear Cephalopodians, in the process of migrating a cluster from Luminous (12.2.12) to Mimic (13.2.5), we have upgraded the FUSE clients first (we took the chance during a time of low activity), thinking that this should not cause any issues. All MDS+MON+OSDs are still on Luminous, 12.2.12.
However, it seems quotas have stopped working - with a (FUSE) Mimic client (13.2.5), I see: $ getfattr --absolute-names --only-values -n ceph.quota.max_bytes /cephfs/user/freyermu/ /cephfs/user/freyermu/: ceph.quota.max_bytes: No such attribute A Luminous client (12.2.12) on the same cluster sees: $ getfattr --absolute-names --only-values -n ceph.quota.max_bytes /cephfs/user/freyermu/ 5000000000000 It does not seem as if the attribute has been renamed (e.g. https://github.com/ceph/ceph/blob/mimic/qa/tasks/cephfs/test_quota.py still references it, same for the docs), and I have to assume the clients also do not enforce quota if they do not see it. Is this a known incompatibility between Mimic clients and a Luminous cluster? The release notes of Mimic only mention that quota support was added to the kernel client, but nothing else quota related catches my eye. Cheers, Oliver
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