On Sat, 5 Oct 2019 at 20:51, Elliott Balsley <elliott@xxxxxxxxxxxxxx> wrote: > > Thanks, I had not noticed the D state. I learn something every day. > I am indeed using NFS hard mount, but when this issue happens there is > no problem with the mount itself. Other apps can read/write just > fine. So maybe this could be improved by making fio do interruptible > sleep? Usually this happens when I accidentally start a job with a > size much higher than I intended. (Sorry for the late reply) It's not fio's choice - it's the kernel's. Fio is doing I/O down to a file (maybe just that file is causing the NFS server heartache?) and the kernel chooses whether doing that I/O makes the task (hopefully temporarily) uninterruptible. Your other tasks might not be doing enough NFS I/O to get caught out (presumably the queue of I/O is backing up) and/or you don't spot them hanging because you're not actively killing them. -- Sitsofe | http://sucs.org/~sits/
