recording and replaying the kernel through qemu

Robert O'Callahan robert at ocallahan.org
Mon May 15 10:36:38 UTC 2017


On Mon, May 15, 2017 at 10:31 PM, Aurélien Aptel <aaptel at suse.com> wrote:

> qemu can already run with a gdb server to debug the kernel but it's
> often useless for me because using breakpoint will have timing issues (I
> work with the cifs networked filesystem).
>
> It would be nice to somehow record what the vm does in qemu so it could
> be replayed again. How hard to implement would this be?
>

rr isn't really suitable for this. A number of projects have looked at
adding record-and-replay to QEMU. Here's a link:
http://wiki.qemu.org/index.php/Features/record-replay

Rob
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