--- begin dump of recent events ---
   -11> 2012-06-12 17:01:38.479873 7f248119b780  0 ceph version 0.47.2 (commit:8bf9fde89bd6ebc4b0645b2fe02dadb1c17ad372), process ceph-osd, pid 16802
   -10> 2012-06-12 17:01:38.789440 7f248119b780  0 filestore(/data/osd.14) mount FIEMAP ioctl is supported and appears to work
    -9> 2012-06-12 17:01:38.789701 7f248119b780  0 filestore(/data/osd.14) mount detected btrfs
    -8> 2012-06-12 17:01:38.789719 7f248119b780  0 filestore(/data/osd.14) mount btrfs CLONE_RANGE ioctl is supported
    -7> 2012-06-12 17:01:38.795688 7f248119b780  0 filestore(/data/osd.14) mount btrfs SNAP_CREATE is supported
    -6> 2012-06-12 17:01:38.825000 7f248119b780  0 filestore(/data/osd.14) mount btrfs SNAP_DESTROY is supported
    -5> 2012-06-12 17:01:38.825653 7f248119b780  0 filestore(/data/osd.14) mount btrfs START_SYNC is supported (transid 1190)
    -4> 2012-06-12 17:01:38.831430 7f248119b780  0 filestore(/data/osd.14) mount btrfs WAIT_SYNC is supported
    -3> 2012-06-12 17:01:38.834173 7f248119b780  0 filestore(/data/osd.14) mount btrfs SNAP_CREATE_V2 is supported
    -2> 2012-06-12 17:01:38.849535 7f248119b780  0 filestore(/data/osd.14) mount found snaps <211250,211540>
    -1> 2012-06-12 17:01:39.386536 7f248119b780  0 filestore(/data/osd.14) mount: enabling PARALLEL journal mode: btrfs, SNAP_CREATE_V2 detected and 'filestore btrfs snap' mode is enabled
     0> 2012-06-12 17:01:40.436272 7f247d617700 -1 *** Caught signal (Aborted) **
 in thread 7f247d617700

 ceph version 0.47.2 (commit:8bf9fde89bd6ebc4b0645b2fe02dadb1c17ad372)
 1: /usr/bin/ceph-osd() [0x6eb32a]
 2: (()+0xfcb0) [0x7f2480b79cb0]
 3: (gsignal()+0x35) [0x7f247f06a445]
 4: (abort()+0x17b) [0x7f247f06dbab]
 5: (__gnu_cxx::__verbose_terminate_handler()+0x11d) [0x7f247f9b869d]
 6: (()+0xb5846) [0x7f247f9b6846]
 7: (()+0xb5873) [0x7f247f9b6873]
 8: (()+0xb596e) [0x7f247f9b696e]
 9: (std::__throw_length_error(char const*)+0x57) [0x7f247f963907]
 10: (()+0x9eaa2) [0x7f247f99faa2]
 11: (char* std::string::_S_construct<char const*>(char const*, char const*, std::allocator<char> const&, std::forward_iterator_tag)+0x35) [0x7f247f9a1495]
 12: (std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, unsigned long, std::allocator<char> const&)+0x1d) [0x7f247f9a161d]
 13: (leveldb::InternalKeyComparator::FindShortestSeparator(std::string*, leveldb::Slice const&) const+0x47) [0x6d1ce7]
 14: (leveldb::TableBuilder::Add(leveldb::Slice const&, leveldb::Slice const&)+0x92) [0x6e0712]
 15: (leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*)+0x482) [0x6cc552]
 16: (leveldb::DBImpl::BackgroundCompaction()+0x2b0) [0x6ccd50]
 17: (leveldb::DBImpl::BackgroundCall()+0x68) [0x6cd7f8]
 18: /usr/bin/ceph-osd() [0x6e679f]
 19: (()+0x7e9a) [0x7f2480b71e9a]
 20: (clone()+0x6d) [0x7f247f1264bd]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

--- end dump of recent events ---