On Thu, Feb 21, 2013 at 1:44 PM, Martin B Nielsen <martin@xxxxxxxxxxx> wrote: > Thanks, I like that analogy ;). > > Going back to that; if that mob accountant had a part-time helper who > knew how things were just a day ago, would that help? > > As in, if one had a relatively recent backup - would it be possible to > create a new monitor based on that and continue? Or would it be in > vain since everything would have changed so much in the meantime? Vain — the problem is that the OSDs (and, if the daemon is still alive, the clients and MDSes) know what OSDMaps they've seen, and in some cases other pieces of data, and they won't work if the OSDMap version goes backwards, and if the version increases but diverges from the history the OSDs saw you're liable to have all kinds of horrible explosions. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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