recording and replaying the kernel through qemu

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

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

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