Struct DiskParameters

pub struct DiskParameters {

    pub disk_id: Option<[u8; 16]>,
    pub identity: Option<DiskIdentity>,
    pub serial_number: Vec<u8>,
    pub medium_rotation_rate: Option<u16>,
    pub physical_sector_size: Option<u32>,
    pub fua: Option<bool>,
    pub write_cache: Option<bool>,
    pub scsi_disk_size_in_bytes: Option<u64>,
    pub odx: Option<bool>,
    pub unmap: Option<bool>,
    pub max_transfer_length: Option<usize>,
    pub optimal_unmap_sectors: Option<u32>,
    pub get_lba_status: bool,
}

Parameters controlling SCSI disk behavior.

These parameters are all optional. If not provided, a default will be chosen based on the backing disk’s capabilities.

Fields

disk_id: Option<[u8; 16]>

The disk ID, used in T10 identification.

identity: Option<DiskIdentity>

Vendor/model disk information.

serial_number: Vec<u8>

The disk’s serial number.

medium_rotation_rate: Option<u16>

The SCSI medium rotation rate.

physical_sector_size: Option<u32>

The physical sector size.

fua: Option<bool>

Whether FUA is supported.

write_cache: Option<bool>

Whether a write cache is present.

scsi_disk_size_in_bytes: Option<u64>

The disk size to present.

odx: Option<bool>

Whether ODX (copy offload) is supported.

TODO: remove this, our emulator doesn’t support ODX.

unmap: Option<bool>

Whether unmap is supported.

max_transfer_length: Option<usize>

The maximum transfer length for IOs (TODO: or is it for write same?)

optimal_unmap_sectors: Option<u32>

The minimum optimal number of sectors to unmap in a request.

get_lba_status: bool

Report LBA status to the guest.

Note that this will always report fully mapped LBAs, since the underlying disk implementation has no mechanism to report unmapped LBAs.

Trait Implementations

impl Clone for DiskParameters

fn clone(&self) -> DiskParameters

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DiskParameters

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

Formats the value using the given formatter.

impl Default for DiskParameters

fn default() -> DiskParameters

Returns the “default value” for a type.

impl DefaultEncoding for DiskParameters

type Encoding = TableEncoder

The encoding to use for the serialization.

impl<'encoding, AnyR: 'static> StructDecodeMetadata<'encoding, AnyR> for DiskParameters

const DECODERS: &'static [ErasedDecoderEntry]

The list of decoder vtables.

impl<AnyR: 'static> StructEncodeMetadata<AnyR> for DiskParameters

const ENCODERS: &'static [ErasedEncoderEntry]

The list of encoder vtables.

impl StructMetadata for DiskParameters

const NUMBERS: &'static [u32]

The field numbers for each field.

const OFFSETS: &'static [usize]

The byte offset to each field within the struct.