Enum PrefetchPolicy 

pub enum PrefetchPolicy {
    None,
    Fs,
    Blob,
}

Filesystem data prefetch policy.

Variants

None

Fs

Prefetch will be issued from Fs layer, which leverages inode/chunkinfo to prefetch data from blob no matter where it resides(OSS/Localfs). Basically, it is willing to cache the data into blobcache(if exists). It’s more nimble. With this policy applied, image builder currently puts prefetch files’ data into a continuous region within blob which behaves very similar to Blob policy.

Blob

Prefetch will be issued directly from backend/blob layer

Trait Implementations

impl Clone for PrefetchPolicy

fn clone(&self) -> PrefetchPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PrefetchPolicy

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

Formats the value using the given formatter.

impl Default for PrefetchPolicy

fn default() -> Self

Returns the “default value” for a type.

impl FromStr for PrefetchPolicy

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl PartialEq for PrefetchPolicy

fn eq(&self, other: &PrefetchPolicy) -> 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 Copy for PrefetchPolicy

impl StructuralPartialEq for PrefetchPolicy