Struct devicemapper::LinearDev

pub struct LinearDev { /* fields omitted */ }

A DM construct of combined Segments

Methods

impl LinearDev

Use DM to concatenate a list of segments together into a linear block device of continuous sectors.

fn new(name: &str, dm: &DM, segments: Vec<Segment>) -> DmResult<LinearDev>

Construct a new block device by concatenating the given segments into linear space. Use DM to reserve enough space for the stratis metadata on each DmDev. TODO: If the linear device already exists, verify that the kernel's model matches the segments argument.

fn segments(&self) -> &[Segment]

Return a reference to the segments that back this linear device.

fn extend(&mut self, new_segs: Vec<Segment>) -> DmResult<()>

Extend an existing LinearDev with additional new segments.

fn name(&self) -> &str

DM name - from the DeviceInfo struct

fn set_name(&mut self, dm: &DM, name: &str) -> DmResult<()>

Set the name for this LinearDev.

fn dstr(&self) -> String

Get the "x:y" device string for this LinearDev

fn size(&self) -> DmResult<Sectors>

return the total size of the linear device

fn devnode(&self) -> DmResult<PathBuf>

path of the device node

fn teardown(self, dm: &DM) -> DmResult<()>

Remove the device from DM

Trait Implementations

impl Debug for LinearDev

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

Formats the value using the given formatter.