motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 17:53:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

replay: introduce block devices record/replay

Browse source 
This patch introduces block driver that implement recording
and replaying of block devices' operations.
All block completion operations are added to the queue.
Queue is flushed at checkpoints and information about processed requests
is recorded to the log. In replay phase the queue is matched with
events read from the log. Therefore block devices requests are processed
deterministically.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
[ kwolf: Rebased onto modified and already applied part of the series ]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2016-03-14 10:45:10 +03:00 • committed by Kevin Wolf
parent 95b4aed5fd
commit 63785678f3
8 changed files with 209 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/sysemu/replay.h
View file

@ -113,6 +113,8 @@ void replay_bh_schedule_event(QEMUBH *bh);
void replay_input_event(QemuConsole *src, InputEvent *evt);
/*! Adds input sync event to the queue */
void replay_input_sync_event(void);
/*! Adds block layer event to the queue */
void replay_block_event(QEMUBH *bh, uint64_t id);
/* Character device */