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btrfs: add aliases (#17268)

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Managor 2025-07-20 01:28:02 +03:00 committed by GitHub
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12 changed files with 66 additions and 66 deletions

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- Show the status of a running or paused balance operation: - Show the status of a running or paused balance operation:
`sudo btrfs balance status {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} status {{path/to/btrfs_filesystem}}`
- Balance all block groups (slow; rewrites all blocks in filesystem): - Balance all block groups (slow; rewrites all blocks in filesystem):
`sudo btrfs balance start {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} start {{path/to/btrfs_filesystem}}`
- Balance data block groups which are less than 15% utilized, running the operation in the background: - Balance data block groups which are less than 15% utilized, running the operation in the background:
`sudo btrfs balance start {{[--bg|--background]}} -dusage={{15}} {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} start {{[--bg|--background]}} -dusage={{15}} {{path/to/btrfs_filesystem}}`
- Balance a max of 10 metadata chunks with less than 20% utilization and at least 1 chunk on a given device `devid` (see `btrfs filesystem show`): - Balance a max of 10 metadata chunks with less than 20% utilization and at least 1 chunk on a given device `devid` (see `btrfs filesystem show`):
`sudo btrfs balance start -musage={{20}},limit={{10}},devid={{devid}} {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} start -musage={{20}},limit={{10}},devid={{devid}} {{path/to/btrfs_filesystem}}`
- Convert data blocks to the raid6 and metadata to raid1c3 (see mkfs.btrfs(8) for profiles): - Convert data blocks to the raid6 and metadata to raid1c3 (see mkfs.btrfs(8) for profiles):
`sudo btrfs balance start -dconvert={{raid6}} -mconvert={{raid1c3}} {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} start -dconvert={{raid6}} -mconvert={{raid1c3}} {{path/to/btrfs_filesystem}}`
- Convert data blocks to raid1, skipping already converted chunks (e.g. after a previous cancelled conversion operation): - Convert data blocks to raid1, skipping already converted chunks (e.g. after a previous cancelled conversion operation):
`sudo btrfs balance start -dconvert={{raid1}},soft {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} start -dconvert={{raid1}},soft {{path/to/btrfs_filesystem}}`
- Cancel, pause, or resume a running or paused balance operation: - Cancel, pause, or resume a running or paused balance operation:
`sudo btrfs balance {{cancel|pause|resume}} {{path/to/btrfs_filesystem}}` `sudo btrfs {{[b|balance]}} {{cancel|pause|resume}} {{path/to/btrfs_filesystem}}`

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- Check a btrfs filesystem: - Check a btrfs filesystem:
`sudo btrfs check {{path/to/partition}}` `sudo btrfs {{[c|check]}} {{path/to/partition}}`
- Check and repair a btrfs filesystem (dangerous): - Check and repair a btrfs filesystem (dangerous):
`sudo btrfs check --repair {{path/to/partition}}` `sudo btrfs {{[c|check]}} --repair {{path/to/partition}}`
- Show the progress of the check: - Show the progress of the check:
`sudo btrfs check {{[-p|--progress]}} {{path/to/partition}}` `sudo btrfs {{[c|check]}} {{[-p|--progress]}} {{path/to/partition}}`
- Verify the checksum of each data block (if the filesystem is good): - Verify the checksum of each data block (if the filesystem is good):
`sudo btrfs check --check-data-csum {{path/to/partition}}` `sudo btrfs {{[c|check]}} --check-data-csum {{path/to/partition}}`
- Use the `n`-th superblock (`n` can be 0, 1 or 2): - Use the `n`-th superblock (`n` can be 0, 1 or 2):
`sudo btrfs check {{[-s|--super]}} {{n}} {{path/to/partition}}` `sudo btrfs {{[c|check]}} {{[-s|--super]}} {{n}} {{path/to/partition}}`
- Rebuild the checksum tree: - Rebuild the checksum tree:
`sudo btrfs check --repair --init-csum-tree {{path/to/partition}}` `sudo btrfs {{[c|check]}} --repair --init-csum-tree {{path/to/partition}}`
- Rebuild the extent tree: - Rebuild the extent tree:
`sudo btrfs check --repair --init-extent-tree {{path/to/partition}}` `sudo btrfs {{[c|check]}} --repair --init-extent-tree {{path/to/partition}}`

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- Add one or more devices to 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}}` `sudo btrfs {{[d|device]}} {{[a|add]}} {{path/to/block_device1 path/to/block_device2 ...}} {{path/to/btrfs_filesystem}}`
- Remove a device from a btrfs filesystem: - Remove a device from a btrfs filesystem:
`sudo btrfs device remove {{path/to/device1|device_id1 path/to/device2|device_id2 ...}}` `sudo btrfs {{[d|device]}} {{[rem|remove]}} {{path/to/device1|device_id1 path/to/device2|device_id2 ...}}`
- Display error statistics: - Display error statistics:
`sudo btrfs device stats {{path/to/btrfs_filesystem}}` `sudo btrfs {{[d|device]}} {{[st|stats]}} {{path/to/btrfs_filesystem}}`
- Scan all disks and inform the kernel of all detected btrfs filesystems: - Scan all disks and inform the kernel of all detected btrfs filesystems:
`sudo btrfs device scan {{[-d|--all-devices]}}` `sudo btrfs {{[d|device]}} {{[sc|scan]}} {{[-d|--all-devices]}}`
- Display detailed per-disk allocation statistics: - Display detailed per-disk allocation statistics:
`sudo btrfs device usage {{path/to/btrfs_filesystem}}` `sudo btrfs {{[d|device]}} {{[u|usage]}} {{path/to/btrfs_filesystem}}`

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- Show filesystem usage (optionally run as root to show detailed information): - Show filesystem usage (optionally run as root to show detailed information):
`btrfs filesystem usage {{path/to/btrfs_mount}}` `btrfs {{[f|filesystem]}} {{[u|usage]}} {{path/to/btrfs_mount}}`
- Show usage by individual devices: - Show usage by individual devices:
`sudo btrfs filesystem show {{path/to/btrfs_mount}}` `sudo btrfs {{[f|filesystem]}} {{[sh|show]}} {{path/to/btrfs_mount}}`
- Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running): - Defragment a single file on a btrfs filesystem (avoid while a deduplication agent is running):
`sudo btrfs filesystem defragment {{[-v|--verbose]}} {{path/to/file}}` `sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} {{path/to/file}}`
- Defragment a directory recursively (does not cross subvolume boundaries): - Defragment a directory recursively (does not cross subvolume boundaries):
`sudo btrfs filesystem defragment {{[-v|--verbose]}} -r {{path/to/directory}}` `sudo btrfs {{[f|filesystem]}} {{[de|defragment]}} {{[-v|--verbose]}} -r {{path/to/directory}}`
- Force syncing unwritten data blocks to disk(s): - Force syncing unwritten data blocks to disk(s):
`sudo btrfs filesystem sync {{path/to/btrfs_mount}}` `sudo btrfs {{[f|filesystem]}} {{[sy|sync]}} {{path/to/btrfs_mount}}`
- Summarize disk usage for the files in a directory recursively: - Summarize disk usage for the files in a directory recursively:
`sudo btrfs filesystem du {{[-s|--summarize]}} {{path/to/directory}}` `sudo btrfs {{[f|filesystem]}} du {{[-s|--summarize]}} {{path/to/directory}}`
- Create a swap file: - Create a swap file:
`sudo btrfs filesystem mkswapfile --size {{8g}} --uuid {{clear|random|time|UUID_value}} {{path/to/swapfile}}` `sudo btrfs {{[f|filesystem]}} {{[m|mkswapfile]}} --size {{8g}} --uuid {{clear|random|time|UUID_value}} {{path/to/swapfile}}`

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- Print superblock's information: - Print superblock's information:
`sudo btrfs inspect-internal dump-super {{path/to/partition}}` `sudo btrfs {{[i|inspect-internal]}} {{[dump-s|dump-super]}} {{path/to/partition}}`
- Print superblock's and all of its copies' information: - Print superblock's and all of its copies' information:
`sudo btrfs inspect-internal dump-super {{[-a|--all]}} {{path/to/partition}}` `sudo btrfs {{[i|inspect-internal]}} {{[dump-s|dump-super]}} {{[-a|--all]}} {{path/to/partition}}`
- Print filesystem's metadata information: - Print filesystem's metadata information:
`sudo btrfs inspect-internal dump-tree {{path/to/partition}}` `sudo btrfs {{[i|inspect-internal]}} {{[dump-t|dump-tree]}} {{path/to/partition}}`
- Print list of files in inode `n`-th: - Print list of files in inode `n`-th:
`sudo btrfs inspect-internal inode-resolve {{n}} {{path/to/btrfs_mount}}` `sudo btrfs {{[i|inspect-internal]}} {{[i|inode-resolve]}} {{n}} {{path/to/btrfs_mount}}`
- Print list of files at a given logical address: - Print list of files at a given logical address:
`sudo btrfs inspect-internal logical-resolve {{logical_address}} {{path/to/btrfs_mount}}` `sudo btrfs {{[i|inspect-internal]}} {{[lo|logical-resolve]}} {{logical_address}} {{path/to/btrfs_mount}}`
- Print stats of root, extent, csum and fs trees: - Print stats of root, extent, csum and fs trees:
`sudo btrfs inspect-internal tree-stats {{path/to/partition}}` `sudo btrfs {{[i|inspect-internal]}} {{[t|tree-stats]}} {{path/to/partition}}`

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- List available properties (and descriptions) for the given btrfs object: - List available properties (and descriptions) for the given btrfs object:
`sudo btrfs property list {{path/to/btrfs_object}}` `sudo btrfs {{[p|property]}} {{[l|list]}} {{path/to/btrfs_object}}`
- Get all properties for the given btrfs object: - Get all properties for the given btrfs object:
`sudo btrfs property get {{path/to/btrfs_object}}` `sudo btrfs {{[p|property]}} {{[g|get]}} {{path/to/btrfs_object}}`
- Get the `label` property for the given btrfs filesystem or device: - Get the `label` property for the given btrfs filesystem or device:
`sudo btrfs property get {{path/to/btrfs_filesystem}} label` `sudo btrfs {{[p|property]}} {{[g|get]}} {{path/to/btrfs_filesystem}} label`
- Get all object type-specific properties for the given btrfs filesystem or device: - Get all object type-specific properties for the given btrfs filesystem or device:
`sudo btrfs property get -t {{subvol|filesystem|inode|device}} {{path/to/btrfs_filesystem}}` `sudo btrfs {{[p|property]}} {{[g|get]}} -t {{subvol|filesystem|inode|device}} {{path/to/btrfs_filesystem}}`
- Set the `compression` property for a given btrfs inode (either a file or directory): - Set the `compression` property for a given btrfs inode (either a file or directory):
`sudo btrfs property set {{path/to/btrfs_inode}} compression {{zstd|zlib|lzo|none}}` `sudo btrfs {{[p|property]}} {{[s|set]}} {{path/to/btrfs_inode}} compression {{zstd|zlib|lzo|none}}`

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- Rebuild the filesystem metadata tree (very slow): - Rebuild the filesystem metadata tree (very slow):
`sudo btrfs rescue chunk-recover {{path/to/partition}}` `sudo btrfs {{[resc|rescue]}} {{[ch|chunk-recover]}} {{path/to/partition}}`
- Fix device size alignment related problems (e.g. unable to mount the filesystem with super total bytes mismatch): - Fix device size alignment related problems (e.g. unable to mount the filesystem with super total bytes mismatch):
`sudo btrfs rescue fix-device-size {{path/to/partition}}` `sudo btrfs {{[resc|rescue]}} {{[fix-de|fix-device-size]}} {{path/to/partition}}`
- Recover a corrupted superblock from correct copies (recover the root of filesystem tree): - Recover a corrupted superblock from correct copies (recover the root of filesystem tree):
`sudo btrfs rescue super-recover {{path/to/partition}}` `sudo btrfs {{[resc|rescue]}} {{[s|super-recover]}} {{path/to/partition}}`
- Recover from an interrupted transactions (fixes log replay problems): - Recover from an interrupted transactions (fixes log replay problems):
`sudo btrfs rescue zero-log {{path/to/partition}}` `sudo btrfs {{[resc|rescue]}} {{[z|zero-log]}} {{path/to/partition}}`
- Create a `/dev/btrfs-control` control device when `mknod` is not installed: - Create a `/dev/btrfs-control` control device when `mknod` is not installed:
`sudo btrfs rescue create-control-device` `sudo btrfs {{[resc|rescue]}} {{[c|create-control-device]}}`

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- Restore all files from a btrfs filesystem to a given directory: - Restore all files from a btrfs filesystem to a given directory:
`sudo btrfs restore {{path/to/btrfs_device}} {{path/to/target_directory}}` `sudo btrfs {{[rest|restore]}} {{path/to/btrfs_device}} {{path/to/target_directory}}`
- List (don't write) files to be restored from a btrfs filesystem: - List (don't write) files to be restored from a btrfs filesystem:
`sudo btrfs restore {{[-D|--dry-run]}} {{path/to/btrfs_device}} {{path/to/target_directory}}` `sudo btrfs {{[rest|restore]}} {{[-D|--dry-run]}} {{path/to/btrfs_device}} {{path/to/target_directory}}`
- Restore files matching a given regex ([c]ase-insensitive) files to be restored from a btrfs filesystem (all parent directories of target file(s) must match as well): - Restore files matching a given regex ([c]ase-insensitive) files to be restored from a btrfs filesystem (all parent directories of target file(s) must match as well):
`sudo btrfs restore --path-regex {{regex}} -c {{path/to/btrfs_device}} {{path/to/target_directory}}` `sudo btrfs {{[rest|restore]}} --path-regex {{regex}} -c {{path/to/btrfs_device}} {{path/to/target_directory}}`
- Restore files from a btrfs filesystem using a specific root [t]ree `bytenr` (see `btrfs-find-root`): - Restore files from a btrfs filesystem using a specific root [t]ree `bytenr` (see `btrfs-find-root`):
`sudo btrfs restore -t {{bytenr}} {{path/to/btrfs_device}} {{path/to/target_directory}}` `sudo btrfs {{[rest|restore]}} -t {{bytenr}} {{path/to/btrfs_device}} {{path/to/target_directory}}`
- Restore files from a btrfs filesystem (along with metadata, extended attributes, and Symlinks), overwriting files in the target: - Restore files from a btrfs filesystem (along with metadata, extended attributes, and Symlinks), overwriting files in the target:
`sudo btrfs restore {{[-m|--metadata]}} {{[-x|--xattr]}} {{[-S|--symlinks]}} {{[-o|--overwrite]}} {{path/to/btrfs_device}} {{path/to/target_directory}}` `sudo btrfs {{[rest|restore]}} {{[-m|--metadata]}} {{[-x|--xattr]}} {{[-S|--symlinks]}} {{[-o|--overwrite]}} {{path/to/btrfs_device}} {{path/to/target_directory}}`

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- Start a scrub: - Start a scrub:
`sudo btrfs scrub start {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} start {{path/to/btrfs_mount}}`
- Show the status of an ongoing or last completed scrub: - Show the status of an ongoing or last completed scrub:
`sudo btrfs scrub status {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} status {{path/to/btrfs_mount}}`
- Cancel an ongoing scrub: - Cancel an ongoing scrub:
`sudo btrfs scrub cancel {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} {{[c|cancel]}} {{path/to/btrfs_mount}}`
- Resume a previously cancelled scrub: - Resume a previously cancelled scrub:
`sudo btrfs scrub resume {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} {{[r|resume]}} {{path/to/btrfs_mount}}`
- Start a scrub, but do not put the program in the [B]ackground: - Start a scrub, but do not put the program in the [B]ackground:
`sudo btrfs scrub start -B {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} start -B {{path/to/btrfs_mount}}`
- Start a scrub in quiet mode (does not print errors or statistics): - Start a scrub in quiet mode (does not print errors or statistics):
`sudo btrfs scrub start {{[-q|--quiet]}} {{path/to/btrfs_mount}}` `sudo btrfs {{[sc|scrub]}} start {{[-q|--quiet]}} {{path/to/btrfs_mount}}`

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- Create a new empty subvolume: - Create a new empty subvolume:
`sudo btrfs subvolume create {{path/to/new_subvolume}}` `sudo btrfs {{[su|subvolume]}} {{[c|create]}} {{path/to/new_subvolume}}`
- List all subvolumes and snapshots in the specified filesystem: - List all subvolumes and snapshots in the specified filesystem:
`sudo btrfs subvolume list {{path/to/btrfs_filesystem}}` `sudo btrfs {{[su|subvolume]}} {{[l|list]}} {{path/to/btrfs_filesystem}}`
- Delete a subvolume: - Delete a subvolume:
`sudo btrfs subvolume delete {{path/to/subvolume}}` `sudo btrfs {{[su|subvolume]}} {{[d|delete]}} {{path/to/subvolume}}`
- Create a [r]ead-only snapshot of an existing subvolume: - Create a [r]ead-only snapshot of an existing subvolume:
`sudo btrfs subvolume snapshot -r {{path/to/source_subvolume}} {{path/to/target}}` `sudo btrfs {{[su|subvolume]}} {{[sn|snapshot]}} -r {{path/to/source_subvolume}} {{path/to/target}}`
- Create a read-write snapshot of an existing subvolume: - Create a read-write snapshot of an existing subvolume:
`sudo btrfs subvolume snapshot {{path/to/source_subvolume}} {{path/to/target}}` `sudo btrfs {{[su|subvolume]}} {{[sn|snapshot]}} {{path/to/source_subvolume}} {{path/to/target}}`
- Show detailed information about a subvolume: - Show detailed information about a subvolume:
`sudo btrfs subvolume show {{path/to/subvolume}}` `sudo btrfs {{[su|subvolume]}} {{[sh|show]}} {{path/to/subvolume}}`

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- Display help: - Display help:
`btrfs version --help` `btrfs {{[v|version]}} --help`
- Display version: - Display version:
`btrfs version` `btrfs {{[v|version]}}`

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- Create subvolume: - Create subvolume:
`sudo btrfs subvolume create {{path/to/subvolume}}` `sudo btrfs {{[su|subvolume]}} {{[c|create]}} {{path/to/subvolume}}`
- List subvolumes: - List subvolumes:
`sudo btrfs subvolume list {{path/to/mount_point}}` `sudo btrfs {{[su|subvolume]}} {{[l|list]}} {{path/to/mount_point}}`
- Show space usage information: - Show space usage information:
`sudo btrfs filesystem df {{path/to/mount_point}}` `sudo btrfs {{[f|filesystem]}} df {{path/to/mount_point}}`
- Enable quota: - Enable quota:
`sudo btrfs quota enable {{path/to/subvolume}}` `sudo btrfs {{[qu|quota]}} {{[e|enable]}} {{path/to/subvolume}}`
- Show quota: - Show quota:
`sudo btrfs qgroup show {{path/to/subvolume}}` `sudo btrfs {{[qg|qgroup]}} {{[s|show]}} {{path/to/subvolume}}`