Ceph

Probably relevant, ceph-osd.1.log.gz is 7.2g in size and is full of:

2016-04-07 05:01:29.620509 7fb52c9bf700 1 -- 172.21.15.1:6808/16253 --> 172.21.15.1:0/786444710 -- osd_op_reply(76833 [pgls start_epoch 10] v10'1 uv1 ondisk = 0) v7 -- ?+0 0x7fb555d98840 con 0x7fb555c15800
2016-04-07 05:01:29.620515 7fb52c9bf700 10 osd.1 25 dequeue_op 0x7fb556301a00 finish
2016-04-07 05:01:29.620602 7fb522e8d700 1 -- 172.21.15.1:6808/16253 <== client.4162 172.21.15.1:0/786444710 26 ==== osd_op(client.4162.0:76834 24.0 (undecoded) ack+read+known_if_redirected e25) v7 ==== 186+0+39 (300062115 0 3195274061) 0x7fb554952680 con 0x7fb555c15800
2016-04-07 05:01:29.620612 7fb522e8d700 20 osd.1 25 should_share_map client.4162 172.21.15.1:0/786444710 25
2016-04-07 05:01:29.620616 7fb522e8d700 15 osd.1 25 enqueue_op 0x7fb556301800 prio 63 cost 39 latency 0.000029 osd_op(client.4162.0:76834 24.0 (undecoded) ack+read+known_if_redirected e25) v7
2016-04-07 05:01:29.620629 7fb52f1c4700 10 osd.1 25 dequeue_op 0x7fb556301800 prio 63 cost 39 latency 0.000042 osd_op(client.4162.0:76834 24.0 (undecoded) ack+read+known_if_redirected e25) v7 pg pg[24.0( v 10'1 (0'0,10'1] local-les=10 n=1 ec=9 les/c/f 10/10/0 9/9/9) [1,2] r=0 lpr=9 crt=0'0 lcod 0'0 mlcod 0'0 active+clean]
2016-04-07 05:01:29.620641 7fb52f1c4700 10 osd.1 pg_epoch: 25 pg[24.0( v 10'1 (0'0,10'1] local-les=10 n=1 ec=9 les/c/f 10/10/0 9/9/9) [1,2] r=0 lpr=9 crt=0'0 lcod 0'0 mlcod 0'0 active+clean] handle_message: 0x7fb556301800
2016-04-07 05:01:29.620647 7fb52f1c4700 10 osd.1 pg_epoch: 25 pg[24.0( v 10'1 (0'0,10'1] local-les=10 n=1 ec=9 les/c/f 10/10/0 9/9/9) [1,2] r=0 lpr=9 crt=0'0 lcod 0'0 mlcod 0'0 active+clean] do_pg_op osd_op(client.4162.0:76834 24.0 [pgls start_epoch 10] snapc 0=[] ack+read+known_if_redirected e25) v7