You can look at which OSDs the PGs map to. If the PGs have insufficient replica counts they'll report as degraded in "ceph -s" or "ceph -w". Software Engineer #42 @ http://inktank.com | http://ceph.com On Mon, Jul 7, 2014 at 4:30 PM, James Harper <james at ejbdigital.com.au> wrote: >> >> It sounds like maybe you've got a bad CRUSH map if you're seeing that. >> One of the things the tunables do is make the algorithm handle a >> variety of maps better, but if PGs are only mapping to one OSD you >> need to fix that. >> > > How can I tell that this is definitely the case (all copies of a pg on a single osd or a single node)? > > Thanks > > James
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