Enum ReflinkOutcome 

pub enum ReflinkOutcome {
    Cloned,
    Unsupported,
    SourceVanished,
}

The three outcomes of a reflink attempt, kept distinct so callers don’t conflate “filesystem can’t reflink” (a batch-wide property) with “this one source vanished mid-flight” (a per-blob race).

Variants

Cloned

CoW clone succeeded; dest now exists, sharing physical blocks with source until either side is written.

Unsupported

The kernel reported reflinks aren’t supported for this filesystem / src+dst pair (EXDEV/EOPNOTSUPP/ENOTSUP/ ENOSYS/EINVAL). This is a property of the destination filesystem, so a caller materializing a batch MAY disable reflinks for the rest of it and fall straight to copy/write.

SourceVanished

The source was gone by the time we looked (concurrent prune / torn NoSync promote). Reflink is only an optimization, so the caller should degrade to a real copy / bytes-write for THIS blob only — and crucially keep reflinks enabled for the rest of the batch, since the filesystem itself is perfectly capable. A blob that is genuinely absent (not just unreflinkable) still surfaces downstream when the copy/write fallback can’t find its bytes.

Trait Implementations

impl Clone for ReflinkOutcome

fn clone(&self) -> ReflinkOutcome

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ReflinkOutcome

impl Debug for ReflinkOutcome

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

Formats the value using the given formatter.

impl Eq for ReflinkOutcome

impl PartialEq for ReflinkOutcome

fn eq(&self, other: &ReflinkOutcome) -> 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 ReflinkOutcome