Struct WalWriterConfig 

pub struct WalWriterConfig {
    pub write_buffer_size: usize,
    pub alignment: usize,
    pub use_direct_io: bool,
    pub dwb_mode: Option<DwbMode>,
}

Configuration for the WAL writer.

Fields

write_buffer_size: usize

Size of the aligned write buffer (rounded up to alignment).

alignment: usize

O_DIRECT alignment (typically 4096 for NVMe).

use_direct_io: bool

Whether to use O_DIRECT. Set to false for testing on filesystems that don’t support it (e.g., tmpfs).

dwb_mode: Option<DwbMode>

Double-write buffer I/O mode. None means “mirror the parent” — Direct when use_direct_io is true, Buffered otherwise. Some(DwbMode::Off) disables the DWB entirely.

Trait Implementations

impl Clone for WalWriterConfig

fn clone(&self) -> WalWriterConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WalWriterConfig

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

Formats the value using the given formatter.

impl Default for WalWriterConfig

fn default() -> Self

Returns the “default value” for a type.