Ceph

-7> 2014-03-04 14:58:03.649200 1a55b700 1 OSD::op_tp worker finish
-6> 2014-03-04 14:58:03.653399 1ff68700 10 osd.0 11 op tp stopped
-5> 2014-03-04 14:58:03.657315 1c55f700 1 OSD::command_tp worker finish
-4> 2014-03-04 14:58:03.661043 1ff68700 10 osd.0 11 command tp stopped
-3> 2014-03-04 14:58:03.664366 1bd5e700 1 OSD::disk_tp worker finish
-2> 2014-03-04 14:58:03.670865 1ff68700 10 osd.0 11 disk tp paused (new)
-1> 2014-03-04 14:58:03.674249 1ff68700 10 osd.0 11 stopping agent
0> 2014-03-04 14:58:03.786725 1ff68700 -1 osd/OSD.cc: In function 'void OSDService::agent_stop()' thread 1ff68700 time 2014-03-04 14:58:03.677967
osd/OSD.cc: 518: FAILED assert(agent_queue.empty())

ceph version 0.77-696-gd223d3a (d223d3a7d2f00595a1046f0df671401f754a9b39)
1: ceph-osd() [0x615898]
2: (OSD::shutdown()+0xb8f) [0x62fb5f]
3: (OSD::handle_signal(int)+0x11d) [0x630bad]
4: (SignalHandler::entry()+0x18b) [0x98284b]
5: (()+0x7e9a) [0x54ace9a]
6: (clone()+0x6d) [0x6d1dccd]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

Full logs in ubuntu@teuthology:/a/teuthology-2014-03-03_23:02:57-fs-firefly-testing-basic-plana/116167/remote , two other instances in same suite I think.