doc/README-env-vars.txt

   1 Several environment variables are used within the code, primarily for
   2 for debugging purposes; they are documented here.  In most cases simply
   3 setting the environment variable enables the behavior, but in some
   4 cases the value assigned influences behavior as well, as noted below.
   5
   6 General
   7 -------
   8 LIBXFS_LEAK_CHECK            -- warn and exit(1) if zone-allocated memory
   9                                 is leaked at exit.
  10 xfs_fsr
  11 -------
  12 FSRXFSTEST                   -- enable -C nfrag in theory coalesces into
  13                                 nfrag extents.  Doesn't work.
  14 xfs_scrub
  15 ---------
  16 Known debug tweaks (pass -d and set the environment variable):
  17 XFS_SCRUB_FORCE_ERROR        -- pretend all metadata is corrupt
  18 XFS_SCRUB_FORCE_REPAIR       -- repair all metadata even if it's ok
  19 XFS_SCRUB_NO_KERNEL          -- pretend there is no kernel ioctl
  20 XFS_SCRUB_NO_SCSI_VERIFY     -- disable SCSI VERIFY (if present)
  21 XFS_SCRUB_PHASE              -- run only this scrub phase
  22 XFS_SCRUB_THREADS            -- start exactly this number of threads
  23
  24 Available even in non-debug mode:
  25 SERVICE_MODE                 -- compress all error codes to 1 for LSB
  26                                 service action compliance