Hi, On 22/01/2019 10:02, M Ranga Swami Reddy wrote: > Hello - If an OSD shown as down and but its still "in" state..what > will happen with write/read operations on this down OSD? It depends ;-) In a typical 3-way replicated setup with min_size 2, writes to placement groups on that OSD will still go ahead - when 2 replicas are written OK, then the write will complete. Once the OSD comes back up, these writes will then be replicated to that OSD. If it stays down for long enough to be marked out, then pgs on that OSD will be replicated elsewhere. If you had min_size 3 as well, then writes would block until the OSD was back up (or marked out and the pgs replicated to another OSD). Regards, Matthew -- The Wellcome Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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