Struct DefragRangeArgs 

pub struct DefragRangeArgs {
    pub start: u64,
    pub len: u64,
    pub flush: bool,
    pub extent_thresh: u32,
    pub compress: Option<CompressSpec>,
    pub nocomp: bool,
}

Arguments for a defragmentation operation.

Construct with DefragRangeArgs::new and use the builder methods to set options. All options are optional; the defaults match the kernel’s defaults.

Fields

start: u64

Start offset in bytes. Defaults to 0.

len: u64

Number of bytes to defragment. Defaults to u64::MAX (the entire file).

flush: bool

Flush dirty pages to disk immediately after defragmenting.

extent_thresh: u32

Extents larger than this threshold are considered already defragmented and will not be rewritten. 0 uses the kernel default (32 MiB as of recent kernels). 1 forces every extent to be rewritten.

compress: Option<CompressSpec>

Compress the file while defragmenting. None leaves the file’s existing compression attribute unchanged.

nocomp: bool

Explicitly disable compression during defragmentation (uncompress if necessary). Mutually exclusive with compress.

Implementations

impl DefragRangeArgs

pub fn new() -> Self

Create a new DefragRangeArgs with all defaults: defragment the entire file, no compression change, no flush.

pub fn start(self, start: u64) -> Self

Set the start offset in bytes.

pub fn len(self, len: u64) -> Self

Set the number of bytes to defragment.

pub fn flush(self) -> Self

Flush dirty data to disk after defragmenting.

pub fn extent_thresh(self, thresh: u32) -> Self

Set the extent size threshold. Extents larger than this will not be rewritten.

pub fn compress(self, spec: CompressSpec) -> Self

Compress the file using the given algorithm while defragmenting.

pub fn nocomp(self) -> Self

Disable compression while defragmenting (decompresses existing data).

Trait Implementations

impl Clone for DefragRangeArgs

fn clone(&self) -> DefragRangeArgs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DefragRangeArgs

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

Formats the value using the given formatter.

impl Default for DefragRangeArgs

fn default() -> Self

Returns the “default value” for a type.