On Sat, Sep 01, 2018 at 12:45:06PM -0400, Brett Chancellor wrote: > Hi Cephers, > I am in the process of upgrading a cluster from Filestore to bluestore, > but I'm concerned about frequent warnings popping up against the new > bluestore devices. I'm frequently seeing messages like this, although the > specific osd changes, it's always one of the few hosts I've converted to > bluestore. > > 6 ops are blocked > 32.768 sec on osd.219 > 1 osds have slow requests > > I'm running 12.2.4, have any of you seen similar issues? It seems as though > these messages pop up more frequently when one of the bluestore pgs is > involved in a scrub. I'll include my bluestore creation process below, in > case that might cause an issue. (sdb, sdc, sdd are SATA, sde and sdf are > SSD) I had the same issue for some time after a bunch of updates including switching to Luminous and to Bluestore from Filestore. I was unable to track down what was causing it. Then recently I did another bunch of updates including Ceph 12.2.7 and the latest Ubuntu 16.04 updates (which would have included microcode updates), and the problem has as good as gone away. My monitoring also shows reduced latency on my RBD volumes and end users are reporting improved performance. Just throwing this out there in case it helps anyone else - appreciate it's very anecdotal. Tim. -- Tim Bishop http://www.bishnet.net/tim/ PGP Key: 0x6C226B37FDF38D55 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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