On 1/18/18 3:35 PM, Laurence Oberman wrote:

On Thu, 2018-01-18 at 22:24 +0000, Bart Van Assche wrote:

quoted

On Thu, 2018-01-18 at 17:18 -0500, Laurence Oberman wrote:

quoted

OK, I ran 5 at once of 5 separate mount points.
I am using 4k block sizes
Its solid consistent for me. No stalls no gaps.

Hi Laurence,

That's great news and thank you for having shared this information
but I think
it should be mentioned that you have been running my tree in which
some recent
block and dm patches were reverted
(https://github.com/bvanassche/linux/tree/block-scsi-for-next)

quoted

[global]
name=02-mq
filename=fio-output-02-mq.txt
rw=randwrite
verify=md5
;rwmixread=60
;rwmixwrite=40
bs=4K
;direct=1
;numjobs=4
;time_based=1
runtime=120

[file1]
size=3G
ioengine=libaio
iodepth=16

I watch I/O and I see it ramp up but fio still runs and it kind of
shuts down.

In test "file1" I see an I/O size of 3G. Does that mean that the
patch that
should fix the sgl_alloc() issue is working?

Thanks,

Bart.

Hello Bart Thank you.

OK, so booting into Mike tree now and then hopefully I get the lockups.
Can you give me some idea of what to look for.
I assume I/O just stops.

I want to get this happening in-house so we have an avenue to fix this.
Following getting the stall I will attend to the slg patch test for the
SRPT side.

Please note I am not running latest SRPT right now as you know.

When you do have a solid test case, please please submit a blktests
test case for it! This needs to be something we can regularly in
testing.

-- 
Jens Axboe