Hi Cephers,
Recently, a split-brain occurred in my cluster and although it has
recovered and is now healthy, when attempting to delete an empty
directory in CephFS, the MDS server logs:
[ERR] dir 0x100215b86b3.011* object missing on disk; some files may be
lost ('[path to dir]')
After this, the cluster enters in an error state with the message:
[ERR] overall HEALTH_ERR 1 MDSs report damaged metadata
I have already executed:
$ceph tell mds.cephfs:0 scrub start [path to dir] recursive,repair,force
As a response, I received information that some inodes, including the
inode of the mentioned directory, were repaired and the cluster returned
to a healthy state.
[ERR] scrub: inode wrongly marked free: 0x100161edd3b
[ERR] inode table repaired for inode: 0x100161edd3b
[ERR] scrub: inode wrongly marked free: 0x1001c9b8246
[ERR] inode table repaired for inode: 0x1001c9b8246
.....
[ERR] scrub: inode wrongly marked free: 0x100017dc9a3
[ERR] inode table repaired for inode: 0x100017dc9a3
[ERR] scrub: inode wrongly marked free: 0x100113ef73a
[ERR] inode table repaired for inode: 0x100113ef73a
Part that informs that the directory inode was repaired
[WRN] bad backtrace on inode 0x100215b86b3([path to dir]), rewriting it
[ERR] scrub: inode wrongly marked free: 0x100215b86b3
[ERR] inode table repaired for inode: 0x100215b86b3
[INF] Scrub repaired inode 0x100215b86b3
[INF] Cluster is now healthy
[INF] overall HEALTH_OK
If I try to access the same directory again, the MDS server logs:
[ERR] dir 0x100215b86b3.011* object missing on disk; Some files may be
lost ('[path to dir]')
Since the directory is empty, I don't mind losing it.
How do I remove this information from MDS? Or what would be the
recommended action?
Ceph version: ceph version 17.2.8
(f817ceb7f187defb1d021d6328fa833eb8e943b3) quincy (stable)
Thanks in advance,
Leandro Ferrari
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