How to achieve block I/O ordering in QEMU

TL;DR : It’s hard to achieve perfect ordering of block I/O under Linux. The most probable solution of data corruption would be upgrading QEMU to 2.0 or higher. 1. Overview From the perspective of block integrity, Linux block I/O has been the core of controversy. It’s inherently sensitive issue, because a tiny bit of misfunction … [Read more…]