Struct ListChunksCommand 

pub struct ListChunksCommand { /* private fields */ }

List all chunks in the filesystem, one row per stripe

Enumerates every chunk across all devices by walking the chunk tree. For striped profiles (RAID0, RAID10, RAID5, RAID6) each logical chunk maps to multiple stripes on different devices, so it appears on multiple rows. For DUP each logical chunk maps to two physical stripes on the same device, so it also appears twice. For single and non-striped profiles there is a 1:1 correspondence between logical chunks and rows.

Requires CAP_SYS_ADMIN.

Columns:

Devid: btrfs device ID the stripe lives on.

PNumber: physical chunk index on this device, ordered by physical start offset (1-based).

Type/profile: block-group type (data, metadata, system) and replication profile (single, dup, raid0, raid1, …).

PStart: physical byte offset of this stripe on the device.

Length: logical length of the chunk (shared by all its stripes).

PEnd: physical byte offset of the end of this stripe (PStart + Length).

LNumber: logical chunk index for this device, ordered by logical start offset (1-based); DUP stripes share the same value.

LStart: logical byte offset of the chunk in the filesystem address space.

Usage%: percentage of the chunk’s logical space currently occupied (used / length * 100), sourced from the extent tree.

Trait Implementations

impl Args for ListChunksCommand

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl CommandFactory for ListChunksCommand

fn command<'b>() -> Command

Build a Command that can instantiate Self.

fn command_for_update<'b>() -> Command

Build a Command that can update self.

impl Debug for ListChunksCommand

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromArgMatches for ListChunksCommand

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

impl Parser for ListChunksCommand

fn parse() -> Self

Parse from std::env::args_os(), exit on error.

fn try_parse() -> Result<Self, Error>

Parse from std::env::args_os(), return Err on error.

fn parse_from<I, T>(itr: I) -> Self

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, exit on error.

fn try_parse_from<I, T>(itr: I) -> Result<Self, Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, return Err on error.

fn update_from<I, T>(&mut self, itr: I)

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, exit on error.

fn try_update_from<I, T>(&mut self, itr: I) -> Result<(), Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, return Err on error.

impl Runnable for ListChunksCommand

fn run(&self, _format: Format, _dry_run: bool) -> Result<()>