Struct Extent 

pub struct Extent { /* private fields */ }

Represents a logical extent and its physical backing (DeviceExtent). logical_range boundaries must always be a multiple of BLOCK_SIZE (4096 bytes).

Implementations

impl Extent

pub fn logical_range(&self) -> Range<u64>

Returns the logical range of this extent.

pub fn device_extent(&self) -> DeviceExtent

Returns the DeviceExtent backing this logical extent.

pub fn device_offset(&self) -> Option<u64>

Returns the optional physical device offset of this extent. If None, this extent is sparse.

pub fn is_sparse(&self) -> bool

Returns true if this extent is sparse (unbacked by physical storage).

pub fn len(&self) -> u64

Returns the logical length of this extent in bytes.

pub fn new( logical_range: Range<u64>, device_extent: impl Into<DeviceExtent>, ) -> Self

Creates a new Extent.

Panics

Panics if logical_range.start or logical_range.end is not a multiple of BLOCK_SIZE (4096 bytes), if logical_range.start > logical_range.end, or if an InlineTail extent is not a single block.

pub fn try_new( logical_range: Range<u64>, device_extent: impl Into<DeviceExtent>, ) -> Result<Self, Error>

Creates a new Extent, returning an Error if the alignment or length is invalid.

Trait Implementations

impl Clone for Extent

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Extent

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

Formats the value using the given formatter.

impl Eq for Extent

impl PartialEq for Extent

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Extent