hard error reading fsbn

[Willie Viljoen]

Well, the problem there is that your drive can't do UDMA at the speed it is
trying to. Replace the cable, make sure it is an 80 conductor cable
conforming to the standards for IDE cables, most specifically, it should not
be longer than 45cm.

If that doesn't help, try setting a lower UDMA mode with atacontrol(8) or
disable it completely via sysctls.

Will

----- Original Message -----
From: "Stefan Knoblauch" <mail at stefan-knoblauch.de>
To: "Lowell Gilbert" <freebsd-stable-local at be-well.ilk.org>
Cc: <freebsd-stable at freebsd.org>
Sent: Monday, November 24, 2003 5:17 PM
Subject: Re: hard error reading fsbn


>
>  oki, here a tail from the dmesg log
>
>  ad1s1e: hard error reading fsbn 260800575 of 130400256-130400511
>  (ad1s1 bn 260800575; cn 16234 tn 21 sn 42) trying PIO mode ad1:
>  DMA problem fallback to PIO mode ad1: DMA problem fallback to
>  PIO mode
>
>  ad1: DMA problem fallback to PIO mode
>  ad1: DMA problem fallback to PIO mode
>  ad1: DMA problem fallback to PIO mode
>
>  ###################
>
>  no, i use the same cable, now i disconnect the drive ( ad2 )
>  and get the same errors for ad1. ad1 is on the primary controller.
>  ad2 was on the secondary controller. ad1 is a brand new drive.
>
>  regards Stefan
>
>
> On 23 Nov 2003 17:13:47 -0500
> Lowell Gilbert <freebsd-stable-local at be-well.ilk.org> wrote:
>
> > Stefan Knoblauch <mail at stefan-knoblauch.de> writes:
> >
> > > after upgrading from 4.8 to 4.9 i got mane "hard error reading fsbn"
> > > errors. ok i thougt that is a problem of the 2 years old 80 GB
> > > harddisk so i get a new 80 GB drive. after restoring the system to
> > > to the new drive, i get the same errors. the next step was to reformat
> > > the disk on a windows box. this works fine and the harddisk lokks
> > > good. i put the disk into my freebsd 4.9 system and do not have this
> > > read errors. after 1 week re errors come back. more than before.
> > > i do not have any errors with the 4.8 version, so i make a complete
> > > new installation with 4.9. yaeh, no errors. one week later the
> > > systemlog shows me the errors again. in my ear's the system is not
> > > stable. i use 1 maxtor and one IBM disk. does anyone know what the
> > > problem is ?
> >
> > No, but did you replace the drive cable
> > when you replaced the drive itself?
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