Hi, from now I have 5 monitors which share slow SSD with several OSD journal. As a result, each data migration operation (reweight, recovery, etc) is very slow and the cluster is near down. So I have to change that. I'm looking to replace this 5 monitors by 3 new monitors, which still share (very fast) SSD with several OSD. I suppose it's not a good idea, since monitors should have a dedicated storage. What do you think about that ? Is it a better practice to have dedicated storage, but share CPU with Xen VM ? Second point, I'm not sure how to do that migration, without downtime. I was hoping to add the 3 new monitors, then progressively remove the 5 old monitors, but in the doc [1] indicate a special procedure for unhealthy cluster, which seem to be for clusters with damaged monitors, right ? In my case I only have dead PG [2] (#5226), from which I can't recover, but monitors are fine. Can I use the standard procedure ? Thanks, Olivier [1] http://ceph.com/docs/master/rados/operations/add-or-rm-mons/#removing-monitors [2] http://tracker.ceph.com/issues/5226 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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