Struct OwnedLvReader 

pub struct OwnedLvReader<T> { /* private fields */ }

Lifetime-free, owning LV reader.

Construct via Lvm2::open_lv_owned_by_name or Lvm2::open_lv_owned_by_id. Implements embedded_io::Read + Seek.

The reader owns:

• The PV-byte reader T
• A pre-computed Vec<SegmentMap> of the LV’s segment table
• The total LV byte length (for SeekFrom::End)

Implementations

impl<T: Read + Seek> OwnedLvReader<T>

pub fn len(&self) -> u64

Total LV size in bytes (sum of all segments’ byte spans).

pub fn is_empty(&self) -> bool

True if self.len() == 0.

pub fn into_inner(self) -> T

Underlying PV reader. Useful for tests and diagnostics; do not use to bypass the LV→PV mapping.

Trait Implementations

impl<T: ErrorType> ErrorType for OwnedLvReader<T>

type Error = OpenLvError<<T as ErrorType>::Error>

Error type of all the IO operations on this type.

impl<T: Read + Seek> Read for OwnedLvReader<T>

fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error>

Read some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_exact( &mut self, buf: &mut [u8], ) -> Result<(), ReadExactError<Self::Error>>

Read the exact number of bytes required to fill buf.

impl<T: Read + Seek> Seek for OwnedLvReader<T>

fn seek(&mut self, pos: SeekFrom) -> Result<u64, Self::Error>

Seek to an offset, in bytes, in a stream.

fn rewind(&mut self) -> Result<(), Self::Error>

Rewind to the beginning of a stream.

fn stream_position(&mut self) -> Result<u64, Self::Error>

Returns the current seek position from the start of the stream.