Re: [Sheflug] DMA errors on hda

[Richard Lowe <nospam [at] Btinternet.com>]

* Guennadi Liakhovetski (g.liakhovetski [at] ragingbull.com) wrote:
> > > May 28 10:16:56 vetinari kernel: hda: dma_intr: status=0x51 {
> > DriveReady SeekComplete Error }
> > > May 28 10:16:56 vetinari kernel: hda: dma_intr: error=0x84 {
> > DriveStatusError BadCRC }
> 
> IIRC, nothing to worry about. Occasional CRC errors under heavy load,
> which get fixed automatically by re-reading the same block of information
> aren't dangerous. Also, VIA chipset does have a history of problems with
> high (66, 100) UDMA. You might want to check Linux kernel mailing list
> archives, e.g.
> http://www.uwsg.indiana.edu/hypermail/linux/kernel/index.html
> Search for UDMA, VIA, CRC, Hedrick:-)
>

VIA chipsets are the root of all evil.

Kernel oops -> sound -> alsa -> via686a.
Disk corruption in early 2.4 kernels -> via IDE controller.

I think you could make a reasonable some of money, betting on the next
VIA related kernel bug :)


> > From Peter, I used to get the same message but for hdc when my
> > computer was booting up under RH 7.1 . Boot message repeated this crc 
> > error several times but ended with message that it was fixed. How/why I
> > can't tell you but it started since putting another hard drive in, I had
> > to use a longer than recommended ribbon cable, to reach my second cdrom,
> > hdc and then reach the mother board. Prior to this I didn't get the
> > message. Have you perhaps got a long ribbon cable? However, I have just
> > installed Mandrake 8.0 which seems a bit slower but gives me no crc
> > error messages.
> 
> To what IDE channel did you connect your second hd? I presume, the first
> one is on hda, your second CD is on hdc, where's the 1st one? Yes you need
> suitable cable for UDMA, in particular it has to be short. Mandrake might
> have a different kernel configuration, which resulted in lower UDMA
> values. You can check your current setup with
> /sbin/hdparm -I /dev/hdx
> 

(assuming the above is  a reply to a reply, I havent got yet, and was 
weirdly quoted).


*goes back to trying to port his iptables firewall to ipfilter*
Seems as good a time as any to get another box functional just in case
:)


-- 
[ Richard Lowe - richlowe - richlowe [at] btinternet.com ]
[       http://www.richlowe.btinternet.co.uk        ]

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