btrfs filesystem

Manage btrfs filesystems.

=> More information.

• Show filesystem usage (optionally run as root to show detailed information):

btrfs filesystem usage {path/to/btrfs_mount}

• Show usage by individual devices:

sudo btrfs filesystem show {path/to/btrfs_mount}

• Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running):

sudo btrfs filesystem defragment -v {path/to/file}

• Defragment a directory recursively (does not cross subvolume boundaries):

sudo btrfs filesystem defragment -v -r {path/to/directory}

• Force syncing unwritten data blocks to disk(s):

sudo btrfs filesystem sync {path/to/btrfs_mount}

• Summarize disk usage for the files in a directory recursively:

sudo btrfs filesystem du --summarize {path/to/directory}

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