19.3. Restore a bad file

Procedure 19.1. Restoring a bad file from a replicate volume

1. Note the identifiers of bad files

   Check the output of the scrub status command to determine the identifiers of corrupted files.

   # gluster volume bitrot VOLNAME scrub status
   Volume name: VOLNAME
   ...
   Node name: NODENAME
   ...
   Error count: 3
   Corrupted objects:
   5f61ade8-49fb-4c37-af84-c95041ff4bf5
   e8561c6b-f881-499b-808b-7fa2bce190f7
   eff2433f-eae9-48ba-bdef-839603c9434c

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2. Determine the path of each corrupted object

   For files created after GFID-to-path translation was enabled, use the getfattr command to determine the path of the corrupted files.

   # getfattr -n glusterfs.ancestry.path -e text
   /mnt/VOLNAME/.gfid/GFID
   ...
   glusterfs.ancestry.path="/path/to/corrupted_file"

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   For files created before GFID-to-path translation was enabled, use the find command to determine the path of the corrupted file and the index file that match the identifying GFID.

   # find /rhgs/brick*/.glusterfs -name GFID
   /rhgs/brick1/.glusterfs/path/to/GFID

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   # find /rhgs -samefile /rhgs/brick1/.glusterfs/path/to/GFID
   /rhgs/brick1/.glusterfs/path/to/GFID
   /rhgs/brick1/path/to/corrupted_file

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3. Delete the corrupted files

   Delete the corrupted files from the path output by the getfattr or find command.

4. Delete the GFID file

   Delete the GFID file from the /rhgs/brickN/.glusterfs directory.

5. Heal the file

   If you have client self-heal enabled, the file is healed the next time that you access it.
   If you do not have client self-heal enabled, you must manually heal the volume with the following command.

   # gluster volume heal VOLNAME

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   The next time that the bitrot scrubber runs, this GFID is no longer listed (unless it has become corrupted again).