Enum nbdkit::ExtentType

#[repr(u32)]
pub enum ExtentType {
    Allocated,
    Hole,
    Zero,
    HoleZero,
}

Used by Server::extents to report extents to the client

Variants

Allocated

A normal, allocated data extent

Hole

An unallocated extent (hole) which does not read back as zeroes. Note this should only be used in specialized circumstances such as when writing a plugin for (or to emulate) certain SCSI drives which do not guarantee that trimmed blocks read back as zeroes.

Zero

An allocated extent which is known to contain only zeroes.

HoleZero

An unallocated extent, a.k.a. a “hole”, which reads back as zeroes. This is the normal type of hole applicable to most disks.

Trait Implementations

impl Clone for ExtentType

fn clone(&self) -> ExtentType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExtentType

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

Formats the value using the given formatter.

impl PartialEq<ExtentType> for ExtentType

fn eq(&self, other: &ExtentType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ExtentType

impl Eq for ExtentType

impl StructuralEq for ExtentType

impl StructuralPartialEq for ExtentType