pub fn fast_copy_without_sync(
src: &Path,
dst: &Path,
) -> Result<(u64, FastCopyStrategy)>Expand description
Copy an ephemeral backing without flushing the destination to stable storage.
Completed writes are visible to other processes, but are not crash-durable. Use only
for reconstructible/local handoffs whose contract does not require persistence across
host failure. This retains sparse-copy and reflink behavior and independent contents.
Existing snapshot callers must continue using fast_copy_with_strategy.