Struct BlobDisk

pub struct BlobDisk { /* private fields */ }

A read-only disk backed by a blob.

Implementations

impl BlobDisk

pub fn new(blob: impl 'static + Blob + Send + Sync) -> Self

Returns a new blob disk where the blob is the raw disk data.

pub async fn new_fixed_vhd1( blob: impl 'static + Blob + Send + Sync, ) -> Result<Self>

Returns a new blob disk where the blob is a fixed VHD1.

Trait Implementations

impl DiskIo for BlobDisk

fn disk_type(&self) -> &str

Returns the disk type name as a string.

fn sector_count(&self) -> u64

Returns the current sector count.

fn sector_size(&self) -> u32

Returns the logical sector size of the backing store.

fn disk_id(&self) -> Option<[u8; 16]>

Optionally returns a 16-byte identifier for the disk, if there is a natural one for this backing store.

fn physical_sector_size(&self) -> u32

Returns the physical sector size of the backing store.

fn is_fua_respected(&self) -> bool

Returns true if the fua parameter to DiskIo::write_vectored is respected by the backing store by ensuring that the IO is immediately committed to disk.

fn is_read_only(&self) -> bool

Returns true if the disk is read only.

async fn read_vectored( &self, buffers: &RequestBuffers<'_>, sector: u64, ) -> Result<(), DiskError>

Issues an asynchronous read-scatter operation to the disk.

async fn write_vectored( &self, _buffers: &RequestBuffers<'_>, _sector: u64, _fua: bool, ) -> Result<(), DiskError>

Issues an asynchronous write-gather operation to the disk.

async fn sync_cache(&self) -> Result<(), DiskError>

Issues an asynchronous flush operation to the disk.

async fn unmap( &self, _sector: u64, _count: u64, _block_level_only: bool, ) -> Result<(), DiskError>

Unmap sectors from the layer.

fn unmap_behavior(&self) -> UnmapBehavior

Returns the behavior of the unmap operation.

fn optimal_unmap_sectors(&self) -> u32

Returns the optimal granularity for unmaps, in sectors.

fn pr(&self) -> Option<&dyn PersistentReservation>

Optionally returns a trait object to issue persistent reservation requests.

fn eject(&self) -> impl Future<Output = Result<(), DiskError>> + Send

Issues an asynchronous eject media operation to the disk.

fn wait_resize(&self, sector_count: u64) -> impl Future<Output = u64> + Send

Waits for the disk sector size to be different than the specified value.

impl Inspect for BlobDisk

fn inspect(&self, req: Request<'_>)

Inspects the object.