btrfs device

Manage devices in a btrfs filesystem.

• Add one or more devices to a btrfs filesystem:

sudo btrfs device add {path/to/block_device1} [{path/to/block_device2}] {path/to/btrfs_filesystem}

• Remove a device from a btrfs filesystem:

sudo btrfs device remove {path/to/device|device_id} [{...}]

• Display error statistics:

sudo btrfs device stats {path/to/btrfs_filesystem}

• Scan all disks and inform the kernel of all detected btrfs filesystems:

sudo btrfs device scan --all-devices

• Display detailed per-disk allocation statistics:

sudo btrfs device usage {path/to/btrfs_filesystem}

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