Hello, I have a Ceph Cluster with specifications below: 3 x Monitor node 6 x Storage Node (6 disk per Storage Node, 6TB SATA Disks, all disks have SSD journals) Distributed public and private networks. All NICs are 10Gbit/s osd pool default size = 3 osd pool default min size = 2
Ceph version is Jewel 10.2.6. My cluster is active and a lot of virtual machines running on it (Linux and Windows VM's, database clusters, web servers etc). During normal use, cluster slowly went into a state of blocked requests. Blocked requests periodically incrementing. All OSD's seems healthy. Benchmark, iowait, network tests, all of them succeed. Yerterday, 08:00: $ ceph health detail HEALTH_WARN 3 requests are blocked > 32 sec; 3 osds have slow requests 1 ops are blocked > 134218 sec on osd.31 1 ops are blocked > 134218 sec on osd.3 1 ops are blocked > 8388.61 sec on osd.29 3 osds have slow requests Todat, 16:05: $ ceph health detail HEALTH_WARN 32 requests are blocked > 32 sec; 3 osds have slow requests 1 ops are blocked > 134218 sec on osd.31 1 ops are blocked > 134218 sec on osd.3 16 ops are blocked > 134218 sec on osd.29 11 ops are blocked > 67108.9 sec on osd.29 2 ops are blocked > 16777.2 sec on osd.29 1 ops are blocked > 8388.61 sec on osd.29 3 osds have slow requests $ ceph pg dump | grep scrub dumped all in format plain pg_stat objects mip degr misp unf bytes log disklog state state_stamp v reported up up_primary acting acting_primary last_scrub scrub_stamp last_deep_scrub deep_scrub_stamp 20.1e 25183 0 0 0 0 98332537930 3066 3066 active+clean+scrubbing 2017-08-21 04:55:13.354379 6930'23908781 6930:20905696 [29,31,3] 29 [29,31,3] 29 6712'22950171 2017-08-20 04:46:59.208792 6712'22950171 2017-08-20 04:46:59.208792 Active scrub does not finish (about 24 hours). I did not restart any OSD meanwhile. I'm thinking set noscrub, noscrub-deep, norebalance, nobackfill, and norecover flags and restart 3,29,31th OSDs. Is this solve my problem? Or anyone has suggestion about this problem? Thanks, Ramazan _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
