Struct devicemapper::FlakeyTargetParams

pub struct FlakeyTargetParams {
    pub device: Device,
    pub start_offset: Sectors,
    pub up_interval: u32,
    pub down_interval: u32,
    pub feature_args: HashSet<String>,
}

Target params for flakey target

Fields

device: Device

The device on which this segment resides

start_offset: Sectors

The starting offset of this segments in the device.

up_interval: u32

Interval during which flakey target is up, in seconds DM source type is unsigned, so restrict to u32.

down_interval: u32

Interval during which flakey target is down, in seconds DM source type is unsigned, so restrict to u32.

feature_args: HashSet<String>

Optional feature arguments

Methods

impl FlakeyTargetParams

pub fn new(     device: Device,     start_offset: Sectors,     up_interval: u32,     down_interval: u32,     feature_args: Vec<String> ) -> FlakeyTargetParams

Create a new flakey target param struct.

Trait Implementations

impl Clone for FlakeyTargetParams

fn clone(&self) -> FlakeyTargetParams

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FlakeyTargetParams

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

Formats the value using the given formatter.

impl Eq for FlakeyTargetParams

impl PartialEq for FlakeyTargetParams

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

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

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

This method tests for !=.

impl Display for FlakeyTargetParams

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

Generate params to be passed to DM. The format of the params is:
[<num_features> []]

Table parameters

[<num_features> []]

Mandatory parameters: : Full pathname to the underlying block-device, or a "major:minor" device-number. : Starting sector within the device. : Number of seconds device is available. : Number of seconds device returns errors.

Optional feature parameters: If no feature parameters are present, during the periods of unreliability, all I/O returns errors.

drop_writes:

All write I/O is silently ignored. Read I/O is handled correctly.

corrupt_bio_byte <Nth_byte> :

During , replace <Nth_byte> of the data of each matching bio with .

<Nth_byte>: The offset of the byte to replace. Counting starts at 1, to replace the first byte. : Either 'r' to corrupt reads or 'w' to corrupt writes. 'w' is incompatible with drop_writes. : The value (from 0-255) to write. : Perform the replacement only if bio->bi_opf has all the selected flags set.

impl FromStr for FlakeyTargetParams

type Err = DmError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> DmResult<FlakeyTargetParams>

Parses a string s to return a value of this type.