On 1/18/18 3:35 PM, Laurence Oberman wrote: > On Thu, 2018-01-18 at 22:24 +0000, Bart Van Assche wrote: >> On Thu, 2018-01-18 at 17:18 -0500, Laurence Oberman wrote: >>> 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) >> >>> >>> [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
