Hi, Please CC me as I'm not subscribed to the kernel list.
I had a hard time identifying a serious problem in the 2.6 linux kernel. It all started while evaluating RHEL4 for new servers. My data integrity tests gave me bad results - which I couldn't believe - and my first idea was - of course - bad hardware. I ordered new SCSI disks instead of the IDE disks, took another server, spent some money again, tried again and again. That's all long ago now... In my tests I get corrupt files on LVM2 which is on top of software raid1. (This is a common setup even mentioned in the software RAID HOWTO and has worked for me on RedHat 9 / kernel 2.4 for a long time now and it's my favourite configuration). Now, I tested two different distributions, three kernels, three different filesystems and three different hardware. I can always reproduce it with the following easy scripts: LOGF=/root/diff.log while true; do rm -rf /home/XXX2 rsync -a /home/XXX/ /home/XXX2 date >> $LOGF diff -r /home/XXX /home/XXX2 >> $LOGF done the files in /home/XXX are ~15G of ISO images and rpms. diff.log looks like this: Wed Aug 3 13:45:57 CEST 2005 Binary files /home/XXX/ES3-U3/rhel-3-U3-i386-es-disc3.iso and /home/XXX2/ES3-U3/rhel-3-U3-i386-es-disc3.iso differ Wed Aug 3 14:09:14 CEST 2005 Binary files /home/XXX/8.0/psyche-i386-disc1.iso and /home/XXX2/8.0/psyche-i386-disc1.iso differ Wed Aug 3 14:44:17 CEST 2005 Binary files /home/XXX/7.3/valhalla-i386-disc3.iso and /home/XXX2/7.3/valhalla-i386-disc3.iso differ Wed Aug 3 15:15:05 CEST 2005 Wed Aug 3 15:45:40 CEST 2005 Tested software: 1) RedHat EL4 kernel-2.6.9-11.EL vanilla 2.6.12.3 kernel filesystems: EXT2, EXT3, XFS 2) NOVELL/SUSE 9.3 kernel-default-2.6.11.4-21.7 filesystem: EXT3 Tested Hardware: 1) - ASUS P2B-S board - CPU PIII 450MHz - Intel 440BX/ZX/DX Chipset - 4x128M memory (ECC enabled) - 2x IDE disks Seagate Barracuda 400G, connected to onboard "Intel PIIX4 Ultra 33" - Promise Ultra100TX2 adapter for additional tests 2) - DELL PowerEdge 1400 - CPU PIII 800MHz - ServerWorks OSB4 Chipset - 4x256M memory (ECC enabled) - 2x U320 SCSI disks Maxtor Atlas 10K 146G - onboard Adaptec aic7899 Ultra160 SCSI adapter 3) - DELL PowerEdge 1850 - CPU P4 XEON 2.8GHz - 2G memory - 2x U320 SCSI disks Maxtor Atlas 10K 73G SCA - onboard LSI53C1030 SCSI adapter I've put some files toghether from the last test on the PE1850 server: http://www.invoca.ch/bugs/linux-2.6-corruption-on-lvm2-on-raid1/ I've also filed a bug with RedHat: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=164696 I have spent a lot of time on this bug because I consider it very serious. I'm not a kernel hacker but if there is anything I can do to fix this, let me know. Simon - 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/
