btrfs-device
Manage devices in a btrfs filesystem.
TLDR
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]
