[ceph-users] Rocksdb compaction and OSD timeout

Hi, We're running latest Pacific on our production cluster and we've been seeing the dreaded 'OSD::osd_op_tp thread 0x7f346aa64700' had timed out after 15.000000954s' error. We have reasons to believe this happens each time the RocksDB compaction process is launched on an OSD. My question is, does the cluster detecting that an OSD has timed out interrupt the compaction process? This seems to be what's happening, but it's not immediately obvious. We are currently facing an infinite loop of random OSDs timing out and if the compaction process is interrupted without finishing, it may explain that. -- Jean-Philippe Méthot Senior Openstack system administrator Administrateur système Openstack sénior PlanetHoster inc.