Comment 4 for bug 494476

Bug 276476 states that we should file separate bugs for the blocked processes (if I interpret the comments correctly). Can we instead dump everything here?

The easiest way to reproduce this is just running rsync or (s)cp with a big file. I see mainly blocked kvm, pdflush and kjournald in kern.log before the server goes down and I have to find a reset button. (doesn't always go down, but I disabled the rsync backup for now.)