Re: [ceph-users] Question about Erasure-coding clusters and resiliency

2018-02-13 Thread Caspar Smit
Hi Tim, With the current setup you can only handle 1 host failure without loosing any data, BUT everything will probably freeze until you bring the failed node (or the OSD"s in it) back up. Your setup indicates k=6, m=2 and all 8 shards are distributed to 4 hosts (2 shards/osds per host). Be awar

[ceph-users] Question about Erasure-coding clusters and resiliency

2018-02-08 Thread Tim Gipson
Hey all, We are trying to get an erasure coding cluster up and running but we are having a problem getting the cluster to remain up if we lose an OSD host. Currently we have 6 OSD hosts with 6 OSDs a piece. I'm trying to build an EC profile and a crush rule that will allow the cluster to con