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12.2.3. Btrfs
The
btrfsck tool is used to check and repair btrfs filesystems. This tool is still in early development and may not detect or repair all types of filesystem corruption.
By default,
btrfsck does not make changes to the filesystem; that is, it runs check-only mode by default. If repairs are desired the --repair option must be specified.
The following three basic phases are performed by
btrfsck while running:
- Extent checks.
- Filesystem root checks.
- Root reference count checks.
The
btrfs-image(8) utility can be used to create a metadata image prior to repair for diagnostic or testing purposes.
