Pavel Dovgalyuk is a software developer in Institute for System Programming (ISP) of the Russian Academy of Sciences (RAS). The activities of the Institute include fundamental research, software development, applied research for the benefits of the Industry, and education. For the last 9 years he has been working on the project which aim is adding deterministic replay, reverse debugging, instrumentation, instrospection, debugging, and analysis to qemu. Part of this work was already included into mainline QEMU. Pavel presented execution record/replay work at KVM Forum 2014, and instrumentation/introspection approaches at KVM Forum 2017.