On 10/12/2016 08:15 PM, Theodore Ts'o wrote:
On Wed, Oct 12, 2016 at 03:19:25PM -0600, Jens Axboe wrote:FWIW, this is the commit that fixes it: commit 39d13e67ef1f4b327c68431f8daf033a03920117 Author: Jens Axboe <axboe@xxxxxx> Date: Fri Aug 26 14:39:30 2016 -0600 backend: check if we need to update rusage stats, if stat_mutex is busy 2.14 and newer should not have the problem, but earlier versions may depending on how old...Unfortunately, I'm still seeing hangs in generic/299 with the latest version of fio: fio fio-2.14-10-g0a301e9 (Fri, 23 Sep 2016 11:57:00 -0600)
Well, that's no good.
If I use an older fio, it reliably does not hang. What can I do to help debug this?
If I just wanted to invoke generic/299 with a setup similar to yours, what should I do? I can attempt to reproduce it.
As I said, I can attach to the hanging fio using a gdb and give you stackdumps for all of the threads if that would be helpful.
That would definitely be helpful as well, especially if I cannot reproduce it. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
