>> Finally the questions: >> >> a./ Under a situation as the one describe above, how can we safely terminate >> cephfs in the clients? I have had situations where umount simply hangs and >> there is no real way to unblock the situation unless I reboot the client. If >> we have hundreds of clients, I would like to avoid that. > > In your procedure, the umount problems have nothing to do with > corruption. It's (sometimes) hanging because the MDS is offline. If > the client has dirty metadata, it may not be able to flush it until > the MDS is online -- there's no general way to "abort" this without > breaking userspace semantics. Similar case: > http://tracker.ceph.com/issues/9477 > > Rebooting the machine is actually correct, So far, it might be ok, kind of but we have to improve this kind of un-friendly situation. We must give more choices to users using more nice messages, or by implementing another monitor process. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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