Still interested and back to working on this. I taught a couple classes this summer which killed my time in June - July. So Chad, are you already logging all accesses? Or do you need something quick to log them? I have a patch to QEMU mainline (very small) to add block I/O tracing, but it works via the log subsystem and might not fit your environment if you wanted a production solution. -- Wolf On Wed, Aug 14, 2013 at 10:07 AM, Stefan Hajnoczi <stefanha@xxxxxxxxx> wrote: > On Wed, Aug 14, 2013 at 07:29:53AM -0400, Spensky, Chad - 0559 - MITLL wrote: >> We are trying to keep an active shadow copy while the system is running >> without any need for pausing. More precisely we want to log every >> individual access to the drive into a database so that the entire stream >> of accesses could be replayed at a later time. > > CCing Wolfgang Richter who was previously interested in block I/O > tracing: > https://lists.nongnu.org/archive/html/qemu-devel/2013-05/msg01725.html > > Stefan -- Wolf -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
