This commit fixes bd8ee45c. Changes:
- added a _require_btrfs helper function
- check for filefrag with _require_command
- always use _fail in case of errors
- added some comments
- removed $fresh code
- don't set FSTYP
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This is a btrfs specific scratch test checking the backref walker. It
creates a file system with compressed and uncompressed data extents, picks
files randomly and uses filefrag to get their extents. It then asks the
btrfs utility (inspect-internal) to do the backref resolving from fs-logical
address (the one filefrag calls "physical") back to the inode number and
file-logical offset, verifying the result.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Jan Schmidt