> On 4/10/19 9:07 AM, Charles Alva wrote: >> Hi Ceph Users, >> >> Is there a way around to minimize rocksdb compacting event so that it >> won't use all the spinning disk IO utilization and avoid it being marked >> as down due to fail to send heartbeat to others? >> >> Right now we have frequent high IO disk utilization for every 20-25 >> minutes where the rocksdb reaches level 4 with 67GB data to compact. >> > > How big is the disk? RocksDB will need to compact at some point and it > seems that the HDD can't keep up. > > I've seen this with many customers and in those cases we offloaded the > WAL+DB to an SSD.
Guess the SSD need to be pretty durable to handle that? Is there a "migration path" to offload this or is it needed to destroy and re-create the OSD? Thanks. Jesper _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
