Enum CacheStorageError 

pub enum CacheStorageError {
    BlockMismatch {
        expected: Box<CacheBlockId>,
        actual: Box<CacheBlockId>,
    },
    InvalidPhase {
        expected: CacheStoragePhase,
        actual: CacheStoragePhase,
    },
    IoNotPending {
        actual: CacheStoragePhase,
    },
    BackingAlreadyExists,
    BackingRequired,
    HostDemotionMismatch {
        expected: u64,
        actual: u64,
    },
    IoMismatch {
        expected: Box<CacheIoOperationKey>,
        actual: Box<CacheIoOperationKey>,
    },
    IoKindMismatch {
        expected: CacheIoOperationKind,
        actual: CacheIoOperationKind,
    },
}

Illegal cache storage phase transition or completion observation.

Variants

BlockMismatch

An operation belongs to a different cache block.

Fields

expected: Box<CacheBlockId>

Block owned by the state machine.

actual: Box<CacheBlockId>

Block owned by the presented operation.

InvalidPhase

An operation is not legal from the current phase.

Fields

expected: CacheStoragePhase

Required source phase.

actual: CacheStoragePhase

Observed source phase.

IoNotPending

No backing-store operation is pending in the current phase.

Fields

actual: CacheStoragePhase

Observed stable or unrelated phase.

BackingAlreadyExists

A device block already had a durable backing.

BackingRequired

A direct release required a durable backing.

HostDemotionMismatch

A different host-demotion completion attempted to resolve the phase.

Fields

expected: u64

Operation retained by the state machine.

actual: u64

Operation presented by the backend.

IoMismatch

A different backing-store completion attempted to resolve the phase.

Fields

expected: Box<CacheIoOperationKey>

Operation retained by the state machine.

actual: Box<CacheIoOperationKey>

Operation presented by the backend.

IoKindMismatch

A read/write completion was submitted to the opposite transition.

Fields

expected: CacheIoOperationKind

Required operation direction.

actual: CacheIoOperationKind

Observed operation direction.

Trait Implementations

impl Clone for CacheStorageError

fn clone(&self) -> CacheStorageError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheStorageError

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

Formats the value using the given formatter.

impl Display for CacheStorageError

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

Formats the value using the given formatter.

impl Eq for CacheStorageError

impl Error for CacheStorageError

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 PartialEq for CacheStorageError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CacheStorageError