On 4/10/18 8:02 PM, Ming Lei wrote:
> On Tue, Apr 10, 2018 at 09:51:41AM -0600, Jens Axboe wrote:
>> Hi Ming,
>>
>> Ran the above blktests on the current tree, and we end up getting
>> a hang that we never recover from. There's on request perpetually
>> stuck:
>>
>> root@dell:/sys/kernel/debug/block/nvme0n1/hctx2# cat busy
>> 000000005e2b09fe {.op=READ, .cmd_flags=, .rq_flags=DONTPREP|IO_STAT|STATS, .state=in_flight, .tag=313, .internal_tag=-1}
>>
>> and no amount of manual running or kicking the queue will bring it
>> back to life. If I run it on 'master', it works fine.
>>
>> Did you run blktests on your series?
>
> Not yet.
>
> Will take a look at it, but this seems related with driver, since
> the request has been submitted to hardware already.
It might be, but it repeatedly failed for me on for-linus, and not on
master. I can try doing some more runs just to gain more confidence.
--
Jens Axboe
