usage: btrfs [global options] <group> [<group>...] <command> [options] [<args>]

Global options:
  --format <format> if supported, print subcommand output in that format (text, json)
  -v, --verbose      increase verbosity of the subcommand
  -q, --quiet        print only errors
  --log <level>     set log level (default, info, verbose, debug, quiet)
  --dry-run         if supported, do not do any active/changing actions

Options for the main command only:
  --help            print condensed help for all subcommands
  --version         print version string and built-in features

btrfs balance start [options] <path>
  Balance chunks across the devices
btrfs balance pause <path>
  Pause running balance
btrfs balance cancel <path>
  Cancel running or paused balance
btrfs balance resume <path>
  Resume interrupted balance
btrfs balance status [-v] <path>
  Show status of running or paused balance

btrfs check [options] <device>
  Check structural integrity of a filesystem (unmounted).

btrfs device add [options] <device> [<device>...] <path>
  Add one or more devices to a mounted filesystem.
btrfs device delete <device>|<devid> [<device>|<devid>...] <path>
btrfs device remove <device>|<devid> [<device>|<devid>...] <path>
  Remove a device from a filesystem
btrfs device replace <command> [...]
	Replace a device (alias of "btrfs replace")
btrfs device scan [-d|--all-devices] <device> [<device>...]
btrfs device scan -u|--forget [<device>...]
  Scan or forget (unregister) devices of btrfs filesystems
btrfs device ready <device>
  Check and wait until a group of devices of a filesystem is ready for mount
btrfs device stats [options] <path>|<device>
  Show device IO error statistics
btrfs device usage [options] <path> [<path>..]
  Show detailed information about internal allocations in devices.

btrfs filesystem df [options] <path>
  Show space usage information for a mount point
btrfs filesystem du [options] <path> [<path>..]
  Summarize disk usage of each file.
btrfs filesystem show [options] [<path>|<uuid>|<device>|label]
  Show the structure of a filesystem
btrfs filesystem commit-stats <file>
  Print number of commits and time stats since mount
btrfs filesystem sync <path>
  Force a sync on a filesystem
btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]
  Defragment a file or a directory
btrfs filesystem resize [options] [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>
  Resize a filesystem
btrfs filesystem label [<device>|<mount_point>] [<newlabel>]
  Get or change the label of a filesystem
btrfs filesystem usage [options] <path> [<path>..]
  Show detailed information about internal filesystem usage .
btrfs filesystem mkswapfile <file>
  Create a new file that's suitable and formatted as a swapfile.

btrfs inspect-internal inode-resolve [-v] <inode> <path>
  Get file system paths for the given inode
btrfs inspect-internal logical-resolve [-Pvo] [-s bufsize] <logical> <path>
  Get file system paths for the given logical address
btrfs inspect-internal subvolid-resolve <subvolid> <path>
  Get file system paths for the given subvolume ID.
btrfs inspect-internal rootid <path>
  Get tree ID of the containing subvolume of path.
btrfs inspect-internal map-swapfile <file>
  Print physical offset of first block and resume offset if file is suitable as swapfile
btrfs inspect-internal min-dev-size [options] <path>
  Get the minimum size the device can be shrunk to
btrfs inspect-internal dump-tree [options] <device> [<device> ..]
  Dump tree structures from a given device
btrfs inspect-internal dump-super [options] device [device...]
  Dump superblock from a device in a textual form
btrfs inspect-internal tree-stats [options] <device>
  Print various stats for trees
btrfs inspect-internal list-chunks [options] <path>
  Enumerate chunks on all devices

btrfs property get [-t <type>] <object> [<name>]
  Get a property value of a btrfs object
btrfs property set [-f] [-t <type>] <object> <name> <value>
  Set a property on a btrfs object
btrfs property list [-t <type>] <object>
  Lists available properties with their descriptions for the given object

btrfs qgroup assign [options] <src> <dst> <path>
  Assign SRC as the child qgroup of DST.
btrfs qgroup remove [options] <src> <dst> <path>
  Remove the relation between child qgroup SRC from DST.
btrfs qgroup create <qgroupid> <path>
  Create a subvolume quota group.
btrfs qgroup clear-stale <path>
  Clear all stale qgroups (level 0/subvolid), without a subvolume.
btrfs qgroup destroy <qgroupid> <path>
  Destroy a quota group.
btrfs qgroup show [options] <path>
  List subvolume quota groups.
btrfs qgroup limit [options] <size>|none [<qgroupid>] <path>
  Set the limits a subvolume quota group.

btrfs quota enable <path>
  Enable subvolume quota support for a filesystem.
btrfs quota disable <path>
  Disable subvolume quota support for a filesystem.
btrfs quota rescan [-sw] <path>
  Trash all qgroup numbers and scan the metadata again with the current config.
btrfs quota status <path>
  Show status information about quota if enabled on the <path>.

btrfs receive [options] <mount>
btrfs receive --dump [options]
  Receive subvolumes from a stream

btrfs replace start [-Bfr] <srcdev>|<devid> <targetdev> <mount_point>
  Replace device of a btrfs filesystem.
btrfs replace status [-1] <mount_point>
  Print status and progress information of a running device replace operation
btrfs replace cancel <mount_point>
  Cancel a running device replace operation.

btrfs rescue chunk-recover [options] <device>
  Recover the chunk tree by scanning the devices one by one.
btrfs rescue super-recover [options] <device>
  Recover bad superblocks from good copies
btrfs rescue zero-log <device>
  Clear the tree log. Usable if it's corrupted and prevents mount.
btrfs rescue fix-device-size <device>
  Re-align device and super block sizes. Usable if newer kernel refuse to mount it due to mismatch super size
btrfs rescue fix-data-checksum <device>
  Fix data checksum mismatches.
btrfs rescue create-control-device
  Create /dev/btrfs-control (see 'CONTROL DEVICE' in btrfs(5))
btrfs rescue clear-ino-cache <device>
  remove leftover items pertaining to the deprecated inode cache feature
btrfs rescue clear-space-cache (v1|v2) <device>
  completely remove the v1 or v2 free space cache
btrfs rescue clear-uuid-tree
  Delete uuid tree so that kernel can rebuild it at mount time

btrfs restore [options] <device> <path>
btrfs restore [options] -l <device>
  Try to restore files from a damaged filesystem (unmounted)

btrfs scrub start [options] <path>|<device>
  Start a new scrub on the filesystem or a device (can be started only once)
btrfs scrub cancel <path>|<device>
  Cancel a running scrub
btrfs scrub resume [-BdqrR] [-c ioprio_class -n ioprio_classdata] <path>|<device>
  Resume previously canceled or interrupted scrub
btrfs scrub status [-dR] <path>|<device>
  Show status of running or finished scrub
btrfs scrub limit [options] <path>
  Show or set scrub limits on devices of the given filesystem.

btrfs send [-ve] [-p <parent>] [-c <clone-src>] [-f <outfile>] <subvol> [<subvol>...]
  Send the subvolume(s) to stdout.

btrfs subvolume create [options] [<dest>/]<name> [[<dest2>/]<name2> ...]
  Create subvolume(s)
btrfs subvolume delete [options] <subvolume> [<subvolume>...]
btrfs subvolume delete [options] -i|--subvolid <subvolid> <path>
  Delete subvolume(s)
btrfs subvolume list [options] <path>
  List subvolumes and snapshots in the filesystem.
btrfs subvolume snapshot [-r] [-i <qgroupid>] <subvolume> { <subdir>/<name> | <subdir> }

btrfs subvolume get-default <path>
  Get the default subvolume of a filesystem
btrfs subvolume set-default <subvolume>
btrfs subvolume set-default <subvolid> <path>
  Set the default subvolume of the filesystem mounted as default.
btrfs subvolume find-new <path> <lastgen>
  List the recently modified files in a filesystem
btrfs subvolume show [options] <path>
  Show more information about the subvolume (UUIDs, generations, times, snapshots)
btrfs subvolume sync <path> [<subvolid>...]
  Wait until given subvolume(s) are completely removed from the filesystem.

btrfs help [--full] [--box]
  Display help information
btrfs version
  Display btrfs-progs version

Use --help as an option for information about a group or command:
  btrfs subvolume --help
  btrfs subvolume create --help

Global options like -q/-v must follow the tool name 'btrfs':
  btrfs -q subvolume create ...
  btrfs --dry-run subvolume create ...