Hi Mathias,
I don't know if this is your problem. But I have had the same DMA problem when
I overclocked a motherboard and the FSB was not divisible by 33( This was on a
Abit BP6 ). When it was not overclocked DMA worked great.
Craig
Matthias Koelle wrote:
> Hi all,
>
> first of all...sorry for my english ;)
> I had a strange problem at boot time. After a reboot it disappeared, but any
> way I`m interested what happened, especially with this superblock
> inconsistency...
> [RAID1 System on 2.2.14,hda and hdc, Array was set up by RH installer]
> ............
> md: superblock update time inconsistency = using most recent on
> freshest hda1
> request module [md_personality_3]: Root fs not mounted
> do_md_run()returned -22
> unbind <hdc1,1>
> export redv(hdc1)
> unbind <hda1,0>
> export_rdev(hda1)
> md stop
> ...autorun done
> Bad md_map in ll_rw_block
> EXT2fs unable to read superblock
> Bad md_map in ll_rw_block
> isofs_read_super: bread failed, dev=09:02, iso_blknu=16, block=32
> kernel panic: VFS: Unable to mount root fs on 09:02
>
> Another problem...perhaps not really matching but perhaps anyone can help
> me:
>
> RAID1 Sytem on a 2.2.14 Kernel. The Raid Array was created during the
> installation by the RH distribution. There are 2 IDE Disks in the Array (hda
> and hdc).
>
> xxx kernel: hda: dma_intr: status=0x51 {DriveReady SeekCompleteError}
> xxx kernel: hda: dam_intr: error=0x84 {DriveStatusError BadCRC}
> ...a few times this error message, then:
> xxx kernel: hda: DMA disabled
> xxx kernel: ide0: reset: success
>
> OK........the kernel detected problems with the DMA mode (which could
> probably cause data faults, etc.) and so disabled it. The disks are both
> Maxtor92041U4s and the chipset is a Intel 440BX, so there should be no
> problem with the DMA mode. The IDE cables are also not very long (which
> length do you recommend?). The only thing the hda differs from the hdc is,
> that it is in a removable frame. Could that cause the problems? Or any
> other hdparm settings.
>
> Thanks in advance
>
> matthias
