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BTRFS Cheatsheet

April 20th, 2014 Leave a comment Go to comments

Create a RAID 1 style file system across two devices:

mkfs.btrfs -d raid1 -m raid1 /dev/sdl /dev/sdn

Display information about the filesystem

btrfs fi show /mnt/btrfs
btrfs fi df /mnt/btrfs

Check the data while online:

btrfs scrub start /mnt/btrfs
btrfs scrub status /mnt/btrfs

Add a drive

btrfs device add /dev/sda /mnt/btrfs
btrfs balance start -d -m /mnt/btrfs

Remove a drive

btrfs device delete /dev/sdl /mnt/btrfs

Replace a drive

btrfs replace start /dev/sda /dev/sdl /mnt/btrfs

Convert to RAID 1 (both data and metadata)

btrfs balance start -dconvert=raid1 -mconvert=raid1 /mnt/btrfs
btrfs balance status /mnt/btrfs
Categories: cheatsheet, file systems
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