----- Original Message ----- > From: "Laurence Oberman" <loberman@xxxxxxxxxx> > To: "Mike Snitzer" <snitzer@xxxxxxxxxx> > Cc: "Bart Van Assche" <bart.vanassche@xxxxxxxxxxx>, dm-devel@xxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx > Sent: Thursday, August 4, 2016 9:07:28 PM > Subject: Re: dm-mq and end_clone_request() > > > > ----- Original Message ----- > > From: "Mike Snitzer" <snitzer@xxxxxxxxxx> > > To: "Bart Van Assche" <bart.vanassche@xxxxxxxxxxx> > > Cc: dm-devel@xxxxxxxxxx, "Laurence Oberman" <loberman@xxxxxxxxxx>, > > linux-scsi@xxxxxxxxxxxxxxx > > Sent: Thursday, August 4, 2016 7:58:50 PM > > Subject: Re: dm-mq and end_clone_request() > > > > I've staged another fix, Laurence is seeing success with this added: > > https://git.kernel.org/cgit/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=dm-4.8&id=d50a6450104c237db1dc75314d17b78c990a8c05 > > > > I'll be sending all the fixes I've queued to Linus tonight or early > > tomorrow (since I'll then be on vacation until Monday 8/15). > > > Hello Bart, > > I applied that patch to your kernel and while I still obviously see all the > debug logging its no longer failing fio for me. > I ran 8 loops with 20 parallel fio runs. This was on a different server to > the one I had been testing on. > > However I am concerned about timing playing a part here here so let us know > what you find. > > Thanks > Laurence Replying to my own message: Hi Bart, Mike Further testing has shown we are still exposed here so more investigation is necessary. The above patch seems to help but I still see sporadic cases of errors escaping up the stack. I expect you will see the same so more work to do here to figure this out. Thanks Laurence -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
