[sorry sent again, since Robert dropped all mailing list CCs and I didn't notice first] On Sat, Jan 03, 2009 at 12:31:12PM -0600, Robert Hancock wrote: > Bernd Schubert wrote: >> On Sat, Jan 03, 2009 at 01:39:36PM +0000, Alan Cox wrote: >>> On Fri, 2 Jan 2009 22:30:07 +0100 >>> Bernd Schubert <bs@xxxxxxxxx> wrote: >>> >>>> Hello Bengt, >>>> >>>> sil3114 is known to cause data corruption with some disks. >>> News to me. There are a few people with lots of SI and other devices >> >> No no, you just forgot about it, since you even reviewed the patches ;) >> >> http://lkml.org/lkml/2007/10/11/137 > > And Jeff explained why they were not merged: > > http://lkml.org/lkml/2007/10/11/166 > > All the patch does is try to reduce the speed impact of the workaround. > But as was pointed out, they don't reliably solve the problem the > workaround is trying to fix, and besides, the workaround is already not > applied to SiI3114 at all, as it is apparently not applicable on that > controller (only 3112). Well, do they reliable solve the problem in our case (before taking the patch into production I run a checksum tests for about 2 weeks). Anyway, I entirely understand the patches didn't get accepted. But now more than a year has passed again without doing anything about it and actually this is what I strongly criticize. Most people don't know about issues like that and don't run file checksum tests as I now always do before taking a disk into production. So users are exposed to known data corruption problems without even being warned about it. Usually even backups don't help, since one creates a backup of the corrupted data. So IMHO, the driver should be deactived for sil3114 until a real solution is found. And it only should be possible to force activate it by a kernel flag, which then also would print a huuuge warning about possible data corruption (unfortunately most distributions disables inital kernel messages *grumble*). Cheers, Bernd -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
