Ceph

LevelDB-based OSD (i.e. "keyvaluestore-dev") crashed as follows on 0.87 during backfill:

os/GenericObjectMap.cc: In function 'GenericObjectMap::Header GenericObjectMap::lookup_parent(GenericObje
ctMap::Header)' thread 7fc4fb179700 time 2014-10-19 10:57:59.683868
os/GenericObjectMap.cc: 972: FAILED assert(0)

--- begin dump of recent events ---
    -5> 2014-10-19 10:57:59.736271 7fc4fa177700  5 -- op tracker -- seq: 3394, time: 2014-10-19 10:57:59.736270, event: sub_op_committed, op: MOSDEC
SubOpWrite(17.11s4 74396 ECSubWrite(tid=11119, reqid=osd.0.73604:2833, at_version=74396'16113, trim_to=0'0, trim_rollback_to=74396'16111))
    -4> 2014-10-19 10:57:59.736302 7fc4fa177700  1 -- 192.168.0.2:6802/24135 --> 192.168.0.201:6802/20501 -- MOSDECSubOpWriteReply(17.11s0 74396 ECS
ubWriteReply(tid=11119, last_complete=74396'16113, committed=1, applied=0)) v1 -- ?+0 0x7fc546368600 con 0x7fc528b5fe40
    -3> 2014-10-19 10:57:59.736423 7fc4fa978700  5 -- op tracker -- seq: 3394, time: 2014-10-19 10:57:59.736423, event: sub_op_applied, op: MOSDECSu
bOpWrite(17.11s4 74396 ECSubWrite(tid=11119, reqid=osd.0.73604:2833, at_version=74396'16113, trim_to=0'0, trim_rollback_to=74396'16111))
    -2> 2014-10-19 10:57:59.736446 7fc4fa978700  1 -- 192.168.0.2:6802/24135 --> 192.168.0.201:6802/20501 -- MOSDECSubOpWriteReply(17.11s0 74396 ECS
ubWriteReply(tid=11119, last_complete=0'0, committed=0, applied=1)) v1 -- ?+0 0x7fc52fece200 con 0x7fc528b5fe40
    -1> 2014-10-19 10:57:59.736461 7fc4fa978700  5 -- op tracker -- seq: 3394, time: 2014-10-19 10:57:59.736461, event: done, op: MOSDECSubOpWrite(1
7.11s4 74396 ECSubWrite(tid=11119, reqid=osd.0.73604:2833, at_version=74396'16113, trim_to=0'0, trim_rollback_to=74396'16111))