tldr/pages/linux/btrfs-scrub.md

btrfs scrub

Scrub btrfs filesystems to verify data integrity. It is recommended to run a scrub once a month. More information: https://btrfs.readthedocs.io/en/latest/btrfs-scrub.html.

• Start a scrub:

sudo btrfs {{[sc|scrub]}} start {{path/to/btrfs_mount}}

• Show the status of an ongoing or last completed scrub:

sudo btrfs {{[sc|scrub]}} status {{path/to/btrfs_mount}}

• Cancel an ongoing scrub:

sudo btrfs {{[sc|scrub]}} {{[c|cancel]}} {{path/to/btrfs_mount}}

• Resume a previously cancelled scrub:

sudo btrfs {{[sc|scrub]}} {{[r|resume]}} {{path/to/btrfs_mount}}

• Start a scrub, but do not put the program in the [B]ackground:

sudo btrfs {{[sc|scrub]}} start -B {{path/to/btrfs_mount}}

• Start a scrub in quiet mode (does not print errors or statistics):

sudo btrfs {{[sc|scrub]}} start {{[-q|--quiet]}} {{path/to/btrfs_mount}}