Check or repair a btrfs filesystem. - btrfs check

Check or repair a btrfs filesystem. More information: btrfs-check(8) — BTRFS documentation.

  • Check a btrfs filesystem:

sudo btrfs check {{path/to/partition}}

  • Check and repair a btrfs filesystem (dangerous):

sudo btrfs check --repair {{path/to/partition}}

  • Show the progress of the check:

sudo btrfs check --progress {{path/to/partition}}

  • Verify the checksum of each data block (if the filesystem is good):

sudo btrfs check --check-data-csum {{path/to/partition}}

  • Use the n-th superblock (n can be 0, 1 or 2):

sudo btrfs check --super {{n}} {{path/to/partition}}

  • Rebuild the checksum tree:

sudo btrfs check --repair --init-csum-tree {{path/to/partition}}

  • Rebuild the extent tree:

sudo btrfs check --repair --init-extent-tree {{path/to/partition}}