Struct EpochParameters 

pub struct EpochParameters {
    pub enabled: bool,
    pub min_epoch_duration_ns: i64,
    pub epoch_refresh_frequency_ns: i64,
    pub cleanup_safety_margin_ns: i64,
    pub advance_on_count: i64,
    pub advance_on_total_size_bytes: i64,
    pub checkpoint_frequency: i64,
    pub delete_parallelism: i64,
}

kopia’s epoch-manager parameters, as reported inside repository status --json → contentFormat.epochParameters.

This block does not follow the rename_all = "camelCase" convention the rest of this module uses — kopia serializes the Go struct’s field names verbatim, so the keys are PascalCase with no consistent rule between them (MinEpochDuration vs EpochRefreshFrequency vs FullCheckpointFrequency vs DeleteParallelism). Hence the explicit per-field renames; crates/kopia/tests/fixtures/repository_status.json carries real kopia 0.23 output and pins the shape.

Units are Go-native and not what the flag names suggest:

• durations are time.Duration nanoseconds (as MaintenanceCadence::interval is);
• EpochAdvanceOnTotalSizeBytesThreshold is bytes, and the --epoch-advance-on-size-mb flag that sets it means MiB — 7 yields 7340032 (7 × 1048576), even though kopia’s own log line renders it as “7.3 MB”.

Fields

enabled: bool

Whether the epoch manager is enabled on this repository.

min_epoch_duration_ns: i64

Minimum epoch age before it may advance, in nanoseconds (kopia default 24h).

epoch_refresh_frequency_ns: i64

How often clients re-read epoch state, in nanoseconds (kopia default 20m).

cleanup_safety_margin_ns: i64

Grace window protecting index blobs a concurrent writer may still need, in nanoseconds (kopia default 4h).

advance_on_count: i64

Index-blob count that triggers an epoch advance (kopia default 20).

advance_on_total_size_bytes: i64

Total index size in bytes that triggers an epoch advance (kopia default 10 MiB).

checkpoint_frequency: i64

Epochs between full index checkpoints (kopia default 7).

delete_parallelism: i64

Parallelism for epoch-cleanup deletions (kopia default 4).

Trait Implementations

impl Clone for EpochParameters

fn clone(&self) -> EpochParameters

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EpochParameters

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EpochParameters

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for EpochParameters

fn eq(&self, other: &EpochParameters) -> 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 Serialize for EpochParameters

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for EpochParameters

impl Eq for EpochParameters

impl StructuralPartialEq for EpochParameters