This set of patches includes several fixes for preserving
the state of the block device images while recording and replaying
virtual machine execution.
blkreplay driver now creates temporary overlay for underlaying devices
This patch implicitly enables '-snapshot' behavior in record/replay mode.
blkreplay layer creates temporary overlays on top of underlaying
disk images. It is needed, because creating an overlay over blkreplay
with explicit '-snapshot' option breaks the determinism.
---
Pavel Dovgalyuk (3):
block: implement bdrv_snapshot_goto for blkreplay
blkreplay: create temporary overlay for underlaying devices
replay: disable default snapshot for record/replay
block/blkreplay.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
stubs/replay.c | 1 +
vl.c | 10 +++++-
3 files changed, 93 insertions(+), 2 deletions(-)
--
Pavel Dovgalyuk
