Which kernel version are you using? I have a similar issue..ubuntu 14.04 kernel 3.13.0-96-generic, and ceph jewel 10.2.3. I get logs like this: 2016-11-15 13:13:57.295067 osd.9 10.3.0.132:6817/24137 98 : cluster [WRN] 16 slow requests, 5 included below; oldest blocked for > 7.957045 secs I set osd_op_complaint_time=5 instead of default of 30. But also had lots of ones >30 even >60s, and with even small blocks like 5s, qemu can hang, and only SIGKILL will stop it. (also I have firefly tunables set right now, and too few pgs...working on that) _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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