Enum SuperblockReason 

pub enum SuperblockReason {
    BadMagic,
    BadCsum,
    GenerationSkew,
    NoValidCopy,
    UnsupportedCsumType,
    UnsupportedIncompat,
    BadGeometry,
}

Why the superblock was rejected. Present as a sub-enum so callers that only care about the boundary can match on Error::BadSuperblock(_) without enumerating the inner variants.

Variants

BadMagic

Magic field did not match the canonical _BHRfS_M.

BadCsum

CRC32C over the superblock body did not match the stored csum.

GenerationSkew

All four superblock copies disagreed irreconcilably on generation.

NoValidCopy

All known superblock locations failed to read or validate.

UnsupportedCsumType

Superblock claims a csum_type other than CRC32C.

UnsupportedIncompat

Superblock claims an INCOMPAT flag the crate does not implement.

BadGeometry

nodesize / sectorsize outside the supported range.

Trait Implementations

impl Clone for SuperblockReason

fn clone(&self) -> SuperblockReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SuperblockReason

impl Debug for SuperblockReason

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

Formats the value using the given formatter.

impl Eq for SuperblockReason

impl PartialEq for SuperblockReason

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for SuperblockReason