From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Moore Subject: Re: Software RAID-5 attempt to access beyond end of device... Date: Sun, 29 Aug 2004 11:27:50 -0700 Sender: linux-raid-owner@vger.kernel.org Message-ID: <41322026.6010107@nsr500.net> References: <1093621033.13979.49.camel@slurp> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1093621033.13979.49.camel@slurp> To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Two performance suggestions. 1. Consider two RAID-1 arrays: hde+hdg (41MB) and hdi+hdk (80MB) which would give much better performance over RAID-5 and lower failure probability without giving up any storage capacity. 2. Set the P2B BIOS to have both promise controllers on IRQ 14 which is unused in your system (remember to disable the primary motherboard IDE and you may have to rearrange PCI slot positions). This will give much better interrupt performance than having the controllers sharing USB and mouse interrupt cycles. Rgds, tim Sebastian Utz wrote: > Hello, > > I have a problem with an Software RAID-5 at the top of 4 IDE-Drives > connected via 2 Promise UltraTX2 (20268) IDE controller. > > FS is EXT3. > Kernel 2.6.8.1 (problem occured with 2.6.7, update didn't helped) > CPU: Pentium II 400 > Mainboard: Asus P2B-S > > After 29% usage, I've got an Kernel oops and system stalls: > -------- snip start ------------- > ---------------- snip end ----------- > > 2 Disks are around 40 GB, 2 are around 80GB. > All 4 disk are different size and manufacturer, maybe this is the > problem? > > more info about my system: > raidtab: > raiddev /dev/md0 > raid-level 5 > nr-raid-disks 4 > nr-spare-disks 0 > persistent-superblock 1 > parity-algorithm left-symmetric > chunk-size 32 > device /dev/hde1 > raid-disk 0 > device /dev/hdg1 > raid-disk 1 > device /dev/hdi1 > raid-disk 2 > device /dev/hdk1 > raid-disk 3 > > gharb:~# df -h > Filesystem Size Used Avail Use% Mounted on > /dev/sda3 7.9G 1.6G 6.0G 21% / > /dev/sda1 47M 20M 25M 46% /boot > /dev/md0 114G 31G 78G 29% /data > > -- | for direct mail add "private_" in front of user name