Hi, Last year I had a lot of crashes on my linux box. I experienced hard reset or processes hanged in "D" state forever. It was much more likely to happen when raid0 array was resyncing. Yesterday I finally managed to track this problem and it turned out that it was related to raid10 kernel module. After applying this patch: https://lkml.org/lkml/2014/6/4/768 My problems are gone. Today I forced array resync, run kernel kompile and two VirtualBox machines with heavy I/O load. On arch linux kernel my machine hanged in 2-3 minutes. Now everything works ok. Regards, Łukasz