Struct LazyRamDiskLayer 

pub struct LazyRamDiskLayer { /* private fields */ }

A RAM-backed disk layer that infers unspecified topology parameters from the lower layer at attach time.

Implementations

impl LazyRamDiskLayer

pub fn new() -> Self

Create a new lazy RAM-backed disk layer.

By default, both size and sector size are inferred from the lower layer. Use with_len and with_sector_size to override.

pub fn with_len(self, len: u64) -> Self

Set the layer size in bytes.

If not set, the size is inferred from the lower layer at attach time.

pub fn with_sector_size(self, sector_size: u32) -> Self

Set the sector size in bytes.

If not set, the sector size is inferred from the lower layer at attach time, defaulting to 512 if there is no lower layer.

Trait Implementations

impl LayerAttach for LazyRamDiskLayer

type Error = Error

Error returned if on attach failure.

type Layer = RamDiskLayer

Object implementating [LayerIo] after being attached.

async fn attach( self, lower_layer_metadata: Option<DiskLayerMetadata>, ) -> Result<Self::Layer, Self::Error>

Invoked when the layer is being attached to a layer stack.