From the log right before the crash: Searching for directory and chunk
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_33]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:930
:mdcache_find_keyed_reason :INODE :F_DBG :Found entry 0x80cb4d0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:930
:mdcache_find_keyed_reason :INODE :F_DBG :Found entry 0x80cb4d0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:1150 :mdc_lookup :NFS READDIR
:F_DBG :NFS READDIR: FULLDEBUG: Lookup parent (..) of 0x80cb4d0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2778 :mdcache_readdir_chunked
:NFS READDIR :F_DBG :NFS READDIR: FULLDEBUG: Starting chunked READDIR for 0x80cb4d0,
MDCACHE_TRUST_CONTENT true, MDCACHE_TRUST_DIR_CHUNKS true
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2969 :mdcache_readdir_chunked
:NFS READDIR :F_DBG :NFS READDIR: FULLDEBUG: found dirent in cached chunk 0x6f70300 dirent
0x39c62a80 key-file-5m-0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2977 :mdcache_readdir_chunked
:NFS READDIR :F_DBG :NFS READDIR: FULLDEBUG: About to read directory=0x80cb4d0 cookie=0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2969 :mdcache_readdir_chunked
:NFS READDIR :F_DBG :NFS READDIR: FULLDEBUG: found dirent in cached chunk 0x6f70300 dirent
0x39c62a80 key-file-5m-0
Tue Feb 05 23:20:17 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2977 :mdcache_readdir_chunked
:NFS READDIR :F_DBG :NFS READDIR: FULLDEBUG: About to read directory=0x80cb4d0 cookie=0
Tue Feb 05 23:20:24 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_avl.c:381 :mdcache_avl_insert :NFS
READDIR :DEBUG :NFS READDIR: DEBUG: Already existent when inserting new dirent on
entry=0x80cb4d0 name=key-file-5m-0
Tue Feb 05 23:20:24 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_avl.c:245 :mdcache_avl_remove :NFS
READDIR :F_DBG :NFS READDIR: FULLDEBUG: Just freed dirent 0x39c62a80 from chunk 0x6f70300
parent 0x80cb4d0
Tue Feb 05 23:20:24 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:1702 :place_new_dirent :NFS
READDIR :F_DBG :NFS READDIR: FULLDEBUG: Could not add key-file-5m-0 to chunk for directory
0x80cb4d0, compute_readdir_cookie failed
Tue Feb 05 23:20:24 2019 UTC 24320[::ffff:10.0.136.88] [svc_56]
/src/src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c:2049 :place_new_dirent :NFS
READDIR :F_DBG :NFS READDIR: FULLDEBUG: Entry 0x80cb4d0 clearing MDCACHE_DIR_POPULATED,
MDCACHE_TRUST_DIR_CHUNKS