Re: SCSI parity errors
On Wed, 19 Jun 2002, Sebastiaan wrote:
> Hello,
>
> I have a problem with my SCSI harddisk/controller which occurs more often
> lately. The errors have the form:
>
> (scsi0:A:1:0): parity error detected in Data-in phase. SEQADDR(0x7c) SCSIRATE(0x88)
>
> and are repeatedly printed in the system logs, until the partitions are
> mounted read-only.
>
>
> Usually I have to turn off the computer, press on the SCSI-card (I still
> have the idea that the card is literally broken, but unsure if this is the
Hallo Sebastiaan,
If pressing on the card is helpful why not clean the contacts with a
pencil eraser? I've done this cheap trick before. Maybe when you press
on the card it scrapes the contacts enough to get a good connection for
awhile??? Maybe try a diff PCI slot?
> Could this be due by:
> - an aging harddisk (less than 5 years old, Quantum Viking II),
You could use SCSI-Select (press CTRL-A when the card's vendor
string pops up on the screen) to verify the media. This won't hurt
your data. (Don't format the disk tho...)
I check my Atlas II occasionally...
> - incorrect connection hardware (parity on or off, termination etc. I am
> pretty sure it is ok, and it is the only device on the bus)
> - the card IS broken
> - something else?
>
>
> I use kernel 2.4.18 with the new aic7xxx driver for Adaptec 2940 card.
This is an ultra wide card (2940UW) yes?
I use the same card with a Quantum Atlas II (XP32275W) with no problems.
(Wide SCSI [ non LVD ] connector going to the hdd)
> Thanks in advance,
> Sebastiaan
Good luck! (Tot straks!)
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