Ceph » bluestore

Upfront: sorry for the title, I don't know better.
One of our OSDs on a machine is constantly up/down due to crashing daemon it seems, that is what the log shows.

    -1> 2018-03-03 20:57:52.577447 7f13128e6700  1 -- 10.3.0.6:6807/3779664 --> 10.3.0.100:0/2025 -- osd_ping(ping_reply e18149 stamp 2018-03-03 20:57:52.575794) v4 -- 0x5577885ee200 con 0
     0> 2018-03-03 20:57:52.594993 7f12f80cc700 -1 *** Caught signal (Aborted) **
 in thread 7f12f80cc700 thread_name:tp_osd_tp

 ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
 1: (()+0xa65824) [0x557766577824]
 2: (()+0x11390) [0x7f1316c67390]
 3: (gsignal()+0x38) [0x7f1315c02428]
 4: (abort()+0x16a) [0x7f1315c0402a]
 5: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x28e) [0x5577665baa1e]
 6: (BlueStore::_collection_list(BlueStore::Collection*, ghobject_t const&, ghobject_t const&, int, std::vector<ghobject_t, std::allocator<ghobject_t> >*, ghobject_t*)+0x1e8f) [0x5577664131cf]
 7: (BlueStore::collection_list(boost::intrusive_ptr<ObjectStore::CollectionImpl>&, ghobject_t const&, ghobject_t const&, int, std::vector<ghobject_t, std::allocator<ghobject_t> >*, ghobject_t*)+0x25a) [0x55776641394a]
 8: (PGBackend::objects_list_partial(hobject_t const&, int, int, std::vector<hobject_t, std::allocator<hobject_t> >*, hobject_t*)+0x3a0) [0x5577661d3d00]
 9: (PG::chunky_scrub(ThreadPool::TPHandle&)+0x9c1) [0x5577660a2c01]
 10: (PG::scrub(unsigned int, ThreadPool::TPHandle&)+0x45c) [0x5577660a413c]
 11: (OSD::ShardedOpWQ::_process(unsigned int, ceph::heartbeat_handle_d*)+0x12d0) [0x557765fe3f70]
 12: (ShardedThreadPool::shardedthreadpool_worker(unsigned int)+0x884) [0x5577665bf684]
 13: (ShardedThreadPool::WorkThreadSharded::entry()+0x10) [0x5577665c26c0]
 14: (()+0x76ba) [0x7f1316c5d6ba]
 15: (clone()+0x6d) [0x7f1315cd441d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

--- logging levels ---
   0/ 5 none
   0/ 1 lockdep
   0/ 1 context
   1/ 1 crush
   1/ 5 mds
   1/ 5 mds_balancer
   1/ 5 mds_locker
   1/ 5 mds_log
   1/ 5 mds_log_expire
   1/ 5 mds_migrator
   0/ 1 buffer
   0/ 1 timer
   0/ 1 filer
   0/ 1 striper
   0/ 1 objecter
   0/ 5 rados
   0/ 5 rbd
   0/ 5 rbd_mirror
   0/ 5 rbd_replay
   0/ 5 journaler
   0/ 5 objectcacher
   0/ 5 client
   1/ 5 osd
   0/ 5 optracker
   0/ 5 objclass
   1/ 3 filestore
   1/ 3 journal
   0/ 5 ms
   1/ 5 mon
   0/10 monc
   1/ 5 paxos
   0/ 5 tp
   1/ 5 auth
   1/ 5 crypto
   1/ 1 finisher
   1/ 1 reserver
   1/ 5 heartbeatmap
   1/ 5 perfcounter
   1/ 5 rgw
   1/10 civetweb
   1/ 5 javaclient
   1/ 5 asok
   1/ 1 throttle
   0/ 0 refs
   1/ 5 xio
   1/ 5 compressor
   1/ 5 bluestore
   1/ 5 bluefs
   1/ 3 bdev
   1/ 5 kstore
   4/ 5 rocksdb
   4/ 5 leveldb
   4/ 5 memdb
   1/ 5 kinetic
   1/ 5 fuse
   1/ 5 mgr
   1/ 5 mgrc
   1/ 5 dpdk
   1/ 5 eventtrace
  -2/-2 (syslog threshold)
  -1/-1 (stderr threshold)
  max_recent     10000
  max_new         1000
  log_file /var/log/ceph/ceph-osd.2.log
--- end dump of recent events ---