> The performance is terrible. But when I enable DMA on the drives with > hdparm -d1 /dev/hd[e-l] > About 10 seconds later I get kernel messages like > hde: lost interrupt > And the only way to clear this is reboot.
Possibilities I can see: Buggy kernel and/or buggy chipset with insufficient kernel workaround. This is the IDE part of the mobo chipsets, and all IDE cards. Disks interfering with each other if you have more than one on a cable. (not likely) Bad cable connection. ACPI / interrupt problems in your box. What are the IDE interrupts shared with? Can you change that for a test? > The hardware is a dual PII 400 with two promise PCI IDE controllers. Ouch, stay clear of that Promise cr*p. AFAIAA, Promise does not have a single product worth using. Use non-raid PCI IDE cards instead, or get something decent (warning: 4 figure price). All that cheap raid shite is software raid anyway and is for Microsofties without software raid in their OS. If you can't avoid such a raid card, use it in IDE mode only and ignore its raid functionality. > Everytime I restart it the raid rebuild begins from scratch too. Interesting. What does that indicate? A disk having been taken offline? Just a disk I/O error shouldn't cause this. Volker -- Volker Kuhlmann is possibly list0570 with the domain in header http://volker.dnsalias.net/ Please do not CC list postings to me.
