Enum Error 

pub enum Error {
    ContextInit(String),
    InvalidArgument(String),
    Ioctl(u8, Option<Box<DeviceInfo>>, Option<Box<DeviceInfo>>, Box<Error>),
    IoctlResultTooLarge,
    MetadataIo(PathBuf, String),
    GeneralIo(String),
    UdevSync(String),
}

Internal error for low-level devicemapper operations

Variants

ContextInit(String)

An error returned on failure to create a devicemapper context

InvalidArgument(String)

This is a generic error that can be returned when a method receives an invalid argument. Ideally, the argument should be invalid in itself, i.e., it should not be made invalid by some part of the program state or the environment.

Ioctl(u8, Option<Box<DeviceInfo>>, Option<Box<DeviceInfo>>, Box<Error>)

An error returned exclusively by DM methods. This error is initiated in DM::do_ioctl and returned by numerous wrapper methods.

IoctlResultTooLarge

An error returned when the response exceeds the maximum possible size of the ioctl buffer.

MetadataIo(PathBuf, String)

An error returned on failure to get metadata for a device

GeneralIo(String)

An error returned on general IO failure

UdevSync(String)

An error synchronizing with udev

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for DmError

fn from(err: Error) -> DmError

Converts to this type from the input type.