Hello List, I have a rather annoying problem. On an Intel S3000AHLX (http://www.intel.com/design/servers/boards/s3000ah/index.htm) motherboard, I can't seem to utilize all SATA interfaces to the maximum. The first sata interface frequently resets every few seconds under heavy IO, the net result being ridiculous slow transfers (attach: dmesg_random_collection_of_errors) Running debian unstable and it's version of 2.6.22. System contains a xeon 3210 and an adaptec scsi controller from which I currently boot. There is little logic in the symptoms: * if there is no or light IO, no resets occur. * it's always the sda port that resets (changing cables or disks doesn't make a difference). * only specific combinations of disk-usage on the sata disks (attach: disk_combinations_causing_reset), just using sda alone does not cause resets. * reading is enough, writing is (subjectively) worse. dd if=/dev/sd{a,b,c,d} of=/dev/null & guarantees trouble. * when the port resets, the disk makes a clearly audible clicking noise I tried numerous things: * having the board exchanged with intel for the latest revision (thanks to my hardware supplier), updating to the latest bios and to a bios version 6 months old. * booting with older versions of the linux kernel, 2.6.18 and 2.6.21. * Using all possible combinations of the bios' matrix/lsi fakeraid and non-raid modes (always ignoring the "raid" and using the disks directly), and enable/disable the one PATA port in the bios. * asked seagate for a drive firmware update, to no avail. The only workable solution so far is to leave the first sata interface unused (remove the disk), which is obviously not a very nice solution. Any hints or suggestions would be welcome, I'd be more than happy to try out new things. things. I'm a bit at a loss on how to proceed at the moment. Kind regards, Joris
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