On Saturday April 28, [EMAIL PROTECTED] wrote: > On Sat, 2007-04-28 at 21:19 +0200, Adrian Bunk wrote: > > 4k stacks have become a well-tested feature used fore a long time in > > Fedora and even in RHEL 4. > > So has anyone fixed the bugs involving ext3 and LVM snapshots on top of > DM mirror?
Well -mm has a patch which makes stacked block devices much less of an issue, but this hasn't made it -linus yet - I think the dm developer isn't happy that dm works properly with it. > > Our 32-bit Fedora Core 5 dual Opteron server at work crashed once a week > while running rdiff-backup off a snapshot. Installing a 64-bit kernel > stopped the crashes, and I believe the 64-bit still uses the bigger > stacks. I wonder if FC-4 has the generic_make_request patch as well as 4K stacks. If does, then there is obviously something else to be fixed. If it doesn't, then maybe that is all that is needed. http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc7/2.6.21-rc7-mm2/broken-out/md-dm-reduce-stack-usage-with-stacked-block-devices.patch NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/