Is there any suggestion on disk spec? I don’t find any doc about it on ceph too! On Fri, Feb 5, 2021 at 11:37 AM Eugen Block <eblock@xxxxxx> wrote: > Hi, > > > My disk latency is 25ms because of the high block size that rocksdb is > > using. > > should I provide a high-performance disk than I'm using for my monitor > > nodes? > > what are you currently using on the MON nodes? There are > recommendations out there [1] to setup MONs with SSDs: > > > An SSD or other sufficiently fast storage type is highly recommended > > for monitors, specifically for the /var/lib/ceph path on each > > monitor node, as quorum may be unstable with high disk latencies. > > Two disks in RAID 1 configuration is recommended for redundancy. It > > is recommended that separate disks or at least separate disk > > partitions are used for the monitor processes to protect the > > monitor's available disk space from things like log file creep. > > Regards, > Eugen > > [1] > https://documentation.suse.com/ses/7/single-html/ses-deployment/#sysreq-mon > > Zitat von Seena Fallah <seenafallah@xxxxxxxxx>: > > > This is my osdmap commit diff: > > report 4231583130 > > "osdmap_first_committed": 300814, > > "osdmap_last_committed": 304062, > > > > My disk latency is 25ms because of the high block size that rocksdb is > > using. > > should I provide a high-performance disk than I'm using for my monitor > > nodes? > > > > On Thu, Feb 4, 2021 at 3:09 AM Seena Fallah <seenafallah@xxxxxxxxx> > wrote: > > > >> Hi all, > >> > >> My monitor nodes are getting up and down because of paxos lease timeout > >> and there is a high iops (2k iops) and 500MB/s throughput on > >> /var/lib/ceph/mon/ceph.../store.db/. > >> My cluster is in a recovery state and there is a bunch of degraded pgs > on > >> my cluster. > >> > >> It seems it's doing a 200k block size io on rocksdb. Is that okay?! > >> Also is there any solution to fix these downtimes for monitors? > >> > >> Thanks for your help! > >> > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
 |