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Re: [Qemu-devel] [PATCH v5 0/7] Deterministic replay extensions

From: Kevin Wolf
Subject: Re: [Qemu-devel] [PATCH v5 0/7] Deterministic replay extensions
Date: Thu, 24 Mar 2016 12:59:14 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

Am 14.03.2016 um 08:44 hat Pavel Dovgalyuk geschrieben:
> This set of patches is related to the reverse execution and deterministic 
> replay of qemu execution. It includes recording and replaying of serial 
> devices
> and block devices operations.
> With these patches one can record and deterministically replay behavior
> of the system with connected disk drives and serial communication ports
> (e.g., telnet terminal).
> Patches for deterministic replay of the block devices intercept calls of
> bdrv coroutine functions at the top of block drivers stack.
> To record and replay block operations the drive must be configured
> as following:
>  -drive file=disk.qcow,if=none,id=img-direct
>  -drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay
>  -device ide-hd,drive=img-blkreplay
> blkreplay driver should be inserted between disk image and virtual driver
> controller. Therefore all disk requests may be recorded and replayed.

As Paolo already merged and modified the first three patches, and I
don't feel like having another version and there seems to be no better
maintainer, I fixed and rebased onto the modified part the remaining
four patches and put them into my block tree.


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