On Fri, Dec 10, 2010 at 8:58 AM, Jon Nelson <jnelson@xxxxxxxxxxx> wrote: > On Fri, Dec 10, 2010 at 12:52 AM, Jon Nelson <jnelson@xxxxxxxxxxx> wrote: >> On Thu, Dec 9, 2010 at 8:38 PM, Ted Ts'o <tytso@xxxxxxx> wrote: >>> On Fri, Dec 10, 2010 at 02:53:30AM +0100, Matt wrote: >>>> >>>> Try a kernel before 5a87b7a5da250c9be6d757758425dfeaf8ed3179 >>>> >>>> from the tests I've done that one showed the least or no corruption if >>>> you count the empty /etc/env.d/03opengl as an artefact >>> >>> Yes, that's a good test. ÂAlso try commit bd2d0210cf. ÂThe patch >>> series that is most likely to be at fault if there is a regression in >>> between 5a87b7a5d and bd2d0210cf inclusive. >>> >>> I did a lot of testing before submitting it, but that wa a tricky >>> rewrite. ÂIf you can reproduce the problem reliably, it might be good >>> to try commit 16828088f9 (the commit before 5a87b7a5d) and commit >>> bd2d0210cf. ÂIf it reliably reproduces on bd2d0210cf, but is clean on >>> 16828088f9, then it's my ext4 block i/o submission patches, and we'll >>> need to either figure out what's going on or back out that set of >>> changes. >>> >>> If that's the case, a bisect of those changes (it's only 6 commits, so >>> it shouldn't take long) would be most appreciated. >> >> I observed the behavior on bd2d0210cf in a qemu-kvm install of >> openSUSE 11.3 (x86_64) on *totally* different host - an AMD quad-core. >> >> I did /not/ observe the behavior on 16828088f9 (yet). I'll run the >> test a few more times on 1682.. >> >> Additionally, I am building a bisected kernel now ( >> cb20d5188366f04d96d2e07b1240cc92170ade40 ), but won't be able to get >> back at it for a while. > > cb20d5188366f04d96d2e07b1240cc92170ade40 seems OK so far. I'm going to > try 1de3e3df917459422cb2aecac440febc8879d410 soon. Barring false negatives, bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc appears to be the culprit (according to git bisect). I will test bd2d0210cf22f2bd0cef72eb97cf94fc7d31d8cc again, confirm the behavior, and work backwards to try to reduce the possibility of false negatives. -- Jon -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
