Date: Tue, 3 Jun 2003 08:30:15 +0200 From: Andreas Klemm <andreas@freebsd.org> To: Dan Nelson <dnelson@allantgroup.com> Cc: current@freebsd.org Subject: Re: whats an UDMA ICRC error ? Message-ID: <20030603063015.GA5311@titan.klemm.apsfilter.org> In-Reply-To: <20030603062335.GA8702@dan.emsphone.com> References: <20030603055718.GA4763@titan.klemm.apsfilter.org> <20030603062335.GA8702@dan.emsphone.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Jun 03, 2003 at 01:23:35AM -0500, Dan Nelson wrote:
> In the last episode (Jun 03), Andreas Klemm said:
> > Hi,
> >=20
> > my console today shows the following error message from my disk:
> >=20
> > ad2: UDMA ICRC error cmd=3Dread fsbn 74689079 of 74689079-74689206 retr=
ying
> > ad2: UDMA ICRC error cmd=3Dread fsbn 74689079 of 74689079-74689206 retr=
ying
> >=20
> > What exactly does an UDMA ICRC error mean ?
> > I think this is simply a read error.
> > AFAIK an IDE disk doesn't have spare sectors or am I wrong ?
> > How severe is this error ? What do you think ??
>=20
> An ICRC error is an error detected by the IDE controller. It usually
> means a cabling problem, as a disk error would be reported by the
> drive, not the controller. From the ATA spec:
>=20
> ICRC shall be set to one if an interface CRC error has occurred
> during an Ultra DMA data transfer. The content of this bit is not
> applicable for Multiword DMA transfers.
>=20
> There are other error bits that indicate uncorrectable media errors.
^^^^^^^^^^^^^^^^^^^^^^^^^^
Does this mean, that data corruption occurred ??
Strange. Didn't touch the hardware since months...
One idea, the cables have been very short and have been
a little bit under tension after installation. Maybe this
is the result now, that I have problems with the cables or
contacts ....
Thanks for the info, will check cabling.
Andreas ///
--=20
Andreas Klemm - Powered by FreeBSD 4.8-STABLE
Need a magic printfilter today ? -> http://www.apsfilter.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030603063015.GA5311>