Ceph » CephFS

reproduce simlar result:

2019-01-10 14:27:21.092670 7fa7bc8cc700 -1 log_channel(cluster) log [ERR] : bad backtrace on directory inode 0x100000029bf
2019-01-10 14:27:22.660108 7fa7bd8ce700 -1 mds.0.cache.strays Rogue reference after purge to [dentry #0x100/stray0/100000029bf [10a8,head] auth (dversion lock) v=1589 inode=0x55cca8080a00 state=1342177316 | request=0 lock=0 inodepin=1 purging=1 dirty=0 authpin=0 0x55cca59c4000]
2019-01-10 14:27:22.661729 7fa7bd8ce700 -1 /root/rpmbuild/BUILD/ceph-12.2.7-527-g1bdb235/src/mds/StrayManager.cc: In function 'void StrayManager::_purge_stray_purged(CDentry*, bool)' thread 7fa7bd8ce700 time 2019-01-10 14:27:22.660126
/root/rpmbuild/BUILD/ceph-12.2.7-527-g1bdb235/src/mds/StrayManager.cc: 210: FAILED assert(0 == "rogue reference to purging inode")

ceph version 12.2.7-527-g1bdb235 (1bdb235c3777e65269aeb7e6b2ab9df6bf5460b5) luminous (stable)
 1: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x110) [0x55cc893c6c30]
 2: (StrayManager::_purge_stray_purged(CDentry*, bool)+0x5f1) [0x55cc891f5f91]
 3: (MDSIOContextBase::complete(int)+0x39b) [0x55cc8930fdab]
 4: (Finisher::finisher_thread_entry()+0x3e8) [0x55cc893c5e48]
 5: (()+0x7e25) [0x7fa7cb035e25]
 6: (clone()+0x6d) [0x7fa7ca11634d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

dump backtrace:
rados -p cephfs_metadata getxattr 100000029bf.00000000 parent > backtrace
ceph-dencoder type inode_backtrace_t import backtrace decode dump_json {
"ino": 1099511638463,
"ancestors": [ {
"dirino": 1536,
"dname": "100000029bf",
"version": 1589
}, {
"dirino": 256,
"dname": "stray0",
"version": 1215
}
],
"pool": 1,
"old_pools": []
}