Sebastien Boeuf 28b6b5d467 offload_daemon: Implement sparse snapshot/restore ...

Copy only populated extents when writing the snapshot file and when
filling the restore memfd, leaving unwritten ranges as holes. Both
the on-disk snapshot and the restored guest RAM stay sparse, so that
untouched guest pages cost no disk space or host memory.

This brings the offload daemon closer to be at feature parity with CH's
internal implementation of snapshot/restore. The only missing piece is
on-demand paging at this point.

Signed-off-by: Sebastien Boeuf <sboeuf@meta.com>
Assisted-by: Claude:claude-opus-4-7

2026-06-18 13:45:36 +00:00

..

src

offload_daemon: Implement sparse snapshot/restore

2026-06-18 13:45:36 +00:00

Cargo.toml

offload_daemon: Introduce a reference implementation

2026-06-18 13:45:36 +00:00