hello, I'm using SuSE 8.0 with Asus A7V333 and 2x60Gb Maxtor D740X drives configured as RAID1. IDE RAID controller is onboard Promise MBFastTrack133 Lite using linux native ataraid/pdcraid drivers. When tested with bonnie/zcav, the array thruput is only ~2MB/sec. On another system, zcav scores about 37MB/sec for the same model drive without ide raid. The problem seems to be, that for some reason, kernel is unable to enable udma on those drives. /var/log/dmesg: ... hda: CDU5211, ATAPI CD/DVD-ROM drive hde: MAXTOR 6L060J3, ATA DISK drive hdg: MAXTOR 6L060J3, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide2 at 0xb400-0xb407,0xb002 on irq 12 ide3 at 0xa800-0xa807,0xa402 on irq 12 (shared with ide2) hde: failed write cache flush, disabling ordered write support hde: 117266688 sectors (60041 MB) w/1819KiB Cache, CHS=116336/16/63 hdg: failed write cache flush, disabling ordered write support hdg: 117266688 sectors (60041 MB) w/1819KiB Cache, CHS=116336/16/63 hda: no flushcache support hda: ATAPI 52X CD-ROM drive, 120kB Cache .... Partition check: hde: [PTBL] [7299/255/63] hde1 hde2 < hde5 hde6 > hdg: [PTBL] [7299/255/63] hdg1 hdg2 < hdg5 hdg6 > --------- /etc/lilo.conf: boot = /dev/ataraid/d0 change-rules reset read-only menu-scheme = Wg:kw:Wg:Wg lba32 prompt timeout = 80 message = /boot/message image = /boot/vmlinuz label = linux root = /dev/ataraid/d0p6 vga = 791 initrd = /boot/initrd.suse append = "ide2=0xb400,0xb002 ide3=0xa800,0xa402 nousb" image = /boot/vmlinuz.suse label = failsafe root = /dev/ataraid/d0p6 vga = 791 initrd = /boot/initrd.suse append = "ide=nodma apm=off acpi=off ide2=0xb400,0xb002 ide3=0xa800,0xa402" optional ... What should I do get udma enabled on those drives? I tried adding hde=autotune hdg=autotune to kernel boot parameters but that didn't have any effect. Could the irq sharing be causing problems (mb manual says that promise is sharing irq line with usb, usb2.0 and pci slot1/5). I had to disable usb completely (bios and mb jumper) to be able to install SuSE. Also had to disable hotplug service after installation, otherwise machine would hang during hotplug usb initialization. full dmesg can be found at http://www.lillepuu.com/txt/dmesg.pdcraid -- Martin Lillepuu | e-mail: martin@xxxxxxxxxxxx | gsm: +372 515 6450
