In a situation where you have say 3 active MDS (and 3 standbys). You have 3 ranks, 0,1,2 In your filesystem you have three directories at the root level [/a, /b, /c]
you pin: /a to rank 0 /b to rank 1 /c to rank 2 and you need to upgrade your Ceph Version. When it becomes time to reduce max_mds to 1 and thereby reduce the number of ranks to 1, just rank 0 what happens to directories /b and /c do they become unavailable between the time when max_mds is reduced to 1 and after the upgrade when max_mds is restored to 3. Alternatively if a rank disappears does the CephFS client understand this and begin to ignore the pinned rank and makes use of the remaining ranks? Thanks. Respectfully, *Wes Dillingham* w...@wesdillingham.com LinkedIn <http://www.linkedin.com/in/wesleydillingham> _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
