Hi,
Any ideas on troubleshooting a "requests are blocked" when all of the
nodes appear to be running OK?
Nothing gets reported in /var/log/ceph/ceph.log as everything is
active+clean throughout the event. All of the nodes can be accessed and
all report the warning while they are blocking.
root@srv-8:~# ceph -w
cluster ab3f7bc0-4cf7-4489-9cde-1af11d68a834
health HEALTH_WARN 151 requests are blocked > 32 sec
monmap e5: 3 mons at
{srv-10=#:6789/0,srv-11=#:6789/0,srv-12=#:6789/0}, election epoch 398,
quorum 0,1,2 srv-10,srv-11,srv-12
mdsmap e182: 1/1/1 up {0=srv-195-8-125-10=up:active}
osdmap e12081: 9 osds: 9 up, 9 in
pgmap v4454492: 1864 pgs, 4 pools, 244 GB data, 1555 kobjects
488 GB used, 6494 GB / 6982 GB avail
1864 active+clean
client io 18656 B/s wr, 1 op/s
2013-11-25 13:55:10.080698 mon.0 [INF] pgmap v4454490: 1864 pgs: 1864
active+clean; 244 GB data, 488 GB used, 6494 GB / 6982 GB avail; 10378
B/s wr, 1 op/s
2013-11-25 13:55:11.165616 mon.0 [INF] pgmap v4454491: 1864 pgs: 1864
active+clean; 244 GB data, 488 GB used, 6494 GB / 6982 GB avail; 37331
B/s wr, 4 op/s
2013-11-25 13:55:13.078688 mon.0 [INF] pgmap v4454492: 1864 pgs: 1864
active+clean; 244 GB data, 488 GB used, 6494 GB / 6982 GB avail; 18656
B/s wr, 1 op/s
All reads seem to get prevented from happening while it's going on.
root@srv-10:~# ceph -v
ceph version 0.72.1 (4d923861868f6a15dcb33fef7f50f674997322de)
Seems to happen for periods of a couple of minutes then wake up again.
Thanks much,
-Michael
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