On 25 October 2010 03:31, Milan Broz <mbroz@xxxxxxxxxx> wrote: > On 10/24/2010 05:32 PM, dave b wrote: >> I am forwarding this to the linux kernel mailing list to see if anyone >> is actually interested with this bug or not. I suspect that the patch >> to allow DM-CRYPT to use multiple cpus(Scale to multiple CPUs) will >> remove most of the problem but *not* all of it. As I previously was >> triggering the bug on a single core system. > > Hi, > sorry for not updating the bug. We know about this. > > Fix was expected to be based on top of the Andi's dm-crypt per-cpu > patch but unfortunately I found serious problems there > (see this thread http://lkml.org/lkml/2010/10/20/215 ) > > So there are now several known situations when dm-crypt doesn't > perform as expected (another problem just appeared when using CFQ, > (because dm(-crypt) lost the issuing process reference) > see http://lkml.org/lkml/2010/10/24/59). Thank for you replying ^ ^ I was aware with the problems and I am following Andi's dm-crypt per-cpu patch (I haven't applied or tested it). However, I didn't know about http://lkml.org/lkml/2010/10/24/59 --> So this may well be the root of the problem! Also, won't http://lkml.org/lkml/2010/10/24/59 need to be altered (again) to work with Andi's patch ? -- There's small choice in rotten apples. -- William Shakespeare, "The Taming of the Shrew" -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
