You could change some settings using 'hdparm', such as the DMA mode (you can 
use UDMA66 and not UDMA100, or 133, for example).

I, in person, like better WD disks. I have (and enjoy) two 80GB WD, those with 
the 8MB cache (faster resposes!). They cost about the same, anyhow, and they 
have 3 years warranty (which is better then most other disks).

Lilo has nothing to do with it, as much as I know. It has nothing to do with 
it.

Usually, dmesg does not lie.

Ez.

On Tuesday 20 April 2004 08:05 pm, Nachum Kanovsky wrote:
> First, thank you for such a quick and clear response.
>
> I have to check abou the DMA, but if it is on and causing the problems,
> what are my alternatives or options? I need fast disk access as my
> application is extrememly heavy on disk access, lots of video recording and
> playback. Is there a way to check if it is a disk problem, or perhaps a
> chipset or other thing? Patches?
>
> The disk isn't getting that hot, this can happen even during a regular
> maintanence boot without running the heavy application.
>
> Do lilo parameters perhaps have something to do with the problem? I am
> using new etx's and new disks, but I am still setting in LBA32, is that
> right? I am not specifying any other special parameters.
>
> I have considered asking my company to switch model disks, would this be a
> good idea? Does anyone know anything about this model drive? (Maxtor
> Diamondmax Plus 8 40 GB)?
>
> Thanx again,
> nachum
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> On Behalf Of Ez-Aton
> Sent: Tuesday, April 20, 2004 4:31 PM
> To: Nachum Kanovsky
> Cc: [EMAIL PROTECTED]
> Subject: Re: hard drive errors - bad disk or?
>
>
> Hi Nachum.
> Drive seek errors are caused due to either bad-sectors, or DMA usage, where
> DMA is either not supported, buggy, or doesn't do the job (generally, when
> it
> fails, but it is not one the previous options).
> I know RH do not activate DMA usage by default, due to problems similar to
> the
> one you have described.
>
> However, if you happen to get "I/O error... ... sector xxxxx", it means
> that
>
> this sector might be faulted. Usually, bad sectors are consistent, aka,
> they
>
> remain bad forever, but there are two issues which might lead to a passing
> disk-test, or lead to a "usually working system with BS reports, once a
> while". They are:
> 1) Auto repair function of the disks. They don't actually repair the BS,
> but
>
> they try to checksum it, and make sure the data remains valid. Working some
> of the time, if you happen to have a real bad sector.
> 2) Over-heat of the disk. This will (I have experianced such a problem in
> the
> past) cause bad-sectors "look-alike" errors, I/O problems, etc. You should
> make sure the disk(s) are not too hot to touch. Might get critical on
> certain
> days/tasks, and might lead to a real disk failure.
>
> So, to sum things up, what do we have?
> It's either bad-sectors, or over-heat of the disk(s), which, in turn,
> _would_
> lead to bad sectors and dead disks.
>
> Good luck.
>
> Ez.
>
> On Tuesday 20 April 2004 10:33 am, Nachum Kanovsky wrote:
> > Please help...
> >
> > I have a project with a number of mirrored disks. I mirror them by
> > running fdisk, mkswap, mke2fs, and cp -ax to the new disk. The disks
> > are Maxtor DiamondMax Plus 8 40GB disks. I let the BIOS autodetect
> > them, and then I let linux do the same, so i am not giving any special
> > parameters for the fdisk to create the partitions. I am running Debian
> > Unstable, and using Lilo to boot. The board that we are running on is
> > a custom made board, running with an Advantech ETX, and our own
> > motherboard (ie none of the hard drive logic or controlling chips were
> > done by us, but the hd cable does connect through our board to the PMC
> > connector on the ETX).
> >
> > On some of the disks I get errors that make me think there is a
> > physical
> > problem:
> >
> > end_request: I/O error, dev, 03:02 (hda), sector xxxxxxx..
> >
> > I have also gotten 'DriveReady SeekComplete Error' errors, but I don't
> > have the exact error to give at the moment.
> >
> > I have on some of the disks ran e2fsck with a non-destructive physical
> > check, and I have found no errors. What else can this be? Is there a
> > more intensive way to check the disk, can this error be due to a
> > cable? Might this be due to bad parameters when creating the
> > partitions? I have been trying to deal with this error for almost half
> > a year now, and I have searched the internet quite a bit, but I have
> > not found anything which has explained this for me.
> >
> > Nachum Kanovsky
> > Software Developer
> > Mango DSP Ltd.
> > E-mail: [EMAIL PROTECTED]
> > Work: +972 2 588 5039
> > Cell: +972 67 508 121
> >
> >
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>
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