Hi,
I have a CephFS cluster that is currently unable to start the mds server as it is hitting an assert, the extract from the mds log is below, any pointers are welcome:
ceph version 10.2.3 (ecc23778eb545d8dd55e2e4735b53cc93f92e65b)
2016-12-08 14:50:18.577038 7f7d9faa3700 1 mds.0.47077 handle_mds_map state change up:rejoin --> up:active
2016-12-08 14:50:18.577048 7f7d9faa3700 1 mds.0.47077 recovery_done -- successful recovery!
2016-12-08 14:50:18.577166 7f7d9faa3700 1 mds.0.47077 active_start
2016-12-08 14:50:19.460208 7f7d9faa3700 1 mds.0.47077 cluster recovered.
2016-12-08 14:50:19.495685 7f7d9abfc700 -1 mds/CDir.cc: In function 'void CDir::try_remove_dentries_for_stray()' thread 7f7d9abfc700 time 2016-12-08 14:50:19
.494508
mds/CDir.cc: 699: FAILED assert(dn->get_linkage()->is_null())
ceph version 10.2.3 (ecc23778eb545d8dd55e2e4735b53cc93f92e65b)
1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x80) [0x55f0f789def0]
2: (CDir::try_remove_dentries_for_stray()+0x1a0) [0x55f0f76666c0]
3: (StrayManager::__eval_stray(CDentry*, bool)+0x8c9) [0x55f0f75e7799]
4: (StrayManager::eval_stray(CDentry*, bool)+0x22) [0x55f0f75e7cf2]
5: (MDCache::scan_stray_dir(dirfrag_t)+0x16d) [0x55f0f753b30d]
6: (MDSInternalContextBase::complete(int)+0x18b) [0x55f0f76e93db]
7: (MDSRank::_advance_queues()+0x6a7) [0x55f0f749bf27]
8: (MDSRank::ProgressThread::entry()+0x4a) [0x55f0f749c45a]
9: (()+0x770a) [0x7f7da6bdc70a]
10: (clone()+0x6d) [0x7f7da509d82d]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
Thanks
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