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
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