Translations:Btrfs/46/en
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Btrfs RAID
With Btrfs you no longer need to use mdadm to create mirrored volumes or to create RAIDs. This is already included in btrfs, and very easy to use. There are even advanced features bult in:
- Add devices to the volume This will integrate a device into the mounted volume root # btrfs device add [/dev/sdz7] /
- Remove devices from the volume. This will not delete any data, but remove the device from the volume. Bevorehand all data will be copied to the remaining devices of the volume.root # btrfs device delete [/dev/sdz8] /
- Use devices with different sizes in one volume
- Switch the volume between RAID levels
- Convert data to different RAID levels
- Do this while the volume is mounted and being used