1. "Testing: Termux, vmtest, and QEMU": https://gist.github.com/NoteAfterNote/7614b0137ac6959e3bba35... (gist.github.com/NoteAfterNote/7614b0137ac6959e3bba35df66eaa75a)

2. "The surprisingly complicated world of disk image sizes": https://www.berrange.com/posts/2017/02/10/the-surprisingly-c... (www.berrange.com/posts/2017/02/10/the-surprisingly-complicated-world-of-disk-image-sizes/)