Struct DevExtent

#[repr(C, packed(1))]
pub struct DevExtent {
    pub chunk_tree: U64<LE>,
    pub chunk_objectid: U64<LE>,
    pub chunk_offset: U64<LE>,
    pub length: U64<LE>,
    pub chunk_tree_uuid: UuidBytes,
}

Maps physical extents on an individual backing device to a chunk. This extent may be the only one for a particular chunk or one of several.

It is associated with the DEV_ITEM item. This structure is never used outside of this item.

Fields

chunk_tree: U64<LE>

The object ID of the chunk tree that owns this extent.

chunk_objectid: U64<LE>

The object ID of the chunk item that references this extent.

chunk_offset: U64<LE>

The offset of the chunk item that references this extent.

length: U64<LE>

The length of this extent, in bytes.

chunk_tree_uuid: UuidBytes

The UUID of the chunk tree that owns this extent.

Trait Implementations

impl AsBytes for DevExtent

where U64<LE>: AsBytes, UuidBytes: AsBytes,

fn as_bytes(&self) -> &[u8]

Gets the bytes of this value.

fn as_bytes_mut(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to<B>(&self, bytes: B) -> Option<()>

where B: ByteSliceMut,

Writes a copy of self to bytes.

fn write_to_prefix<B>(&self, bytes: B) -> Option<()>

where B: ByteSliceMut,

Writes a copy of self to the prefix of bytes.

fn write_to_suffix<B>(&self, bytes: B) -> Option<()>

where B: ByteSliceMut,

Writes a copy of self to the suffix of bytes.

impl Clone for DevExtent

fn clone(&self) -> DevExtent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DevExtent

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

Formats the value using the given formatter.

impl FromBytes for DevExtent

where U64<LE>: FromBytes, UuidBytes: FromBytes,

fn read_from<B>(bytes: B) -> Option<Self>

where B: ByteSlice, Self: Sized,

Reads a copy of Self from bytes.

fn read_from_prefix<B>(bytes: B) -> Option<Self>

where B: ByteSlice, Self: Sized,

Reads a copy of Self from the prefix of bytes.

fn read_from_suffix<B>(bytes: B) -> Option<Self>

where B: ByteSlice, Self: Sized,

Reads a copy of Self from the suffix of bytes.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl Unaligned for DevExtent