I have size=2 & min_size=1 and IO is paused till all hosts com back. On Thu, Jul 9, 2015 at 4:41 PM, Jan Schermer <jan@xxxxxxxxxxx> wrote: > What is the min_size setting for the pool? If you have size=2 and min_size=2, then all your data is safe when one replica is down, but the IO is paused. If you want to continue IO you need to set min_size=1. > But be aware that a single failure after that causes you to lose all the data, you’d have to revert to the other replica if it comes up and works - no idea how that works in ceph but will likely be a PITA to do. > > Jan > >> On 09 Jul 2015, at 12:42, Mallikarjun Biradar <mallikarjuna.biradar@xxxxxxxxx> wrote: >> >> Hi all, >> >> Setup details: >> Two storage enclosures each connected to 4 OSD nodes (Shared storage). >> Failure domain is Chassis (enclosure) level. Replication count is 2. >> Each host has allotted with 4 drives. >> >> I have active client IO running on cluster. (Random write profile with >> 4M block size & 64 Queue depth). >> >> One of enclosure had power loss. So all OSD's from hosts that are >> connected to this enclosure went down as expected. >> >> But client IO got paused. After some time enclosure & hosts connected >> to it came up. >> And all OSD's on that hosts came up. >> >> Till this time, cluster was not serving IO. Once all hosts & OSD's >> pertaining to that enclosure came up, client IO resumed. >> >> >> Can anybody help me why cluster not serving IO during enclosure >> failure. OR its a bug? >> >> -Thanks & regards, >> Mallikarjun Biradar >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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