Date: Tue, 09 Aug 2005 22:04:14 -0400 From: "J. T. Farmer" <jfarmer@goldsword.com> To: freebsd-stable@freebsd.org Subject: Re: ad10: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=11441599 Message-ID: <42F9609E.1010207@goldsword.com> In-Reply-To: <42F9009E.3030601@mac.com> References: <42F7F7E8.1020507@mail.uni-mainz.de> <42F9009E.3030601@mac.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Chuck Swiger wrote:
> O. Hartmann wrote:
> [ ... ]
>
>> One of my SATA disks, the SAMSUNG SP2004C seems to show errors
>> during operation (and also showd under 5.4-RELEASE-p3).
>> Sometimes I get this error:
>> ad10: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=11441599
>> while the machine still keeps working.
>> Other days the box crashes completely.
>>
>> Is this a operating system bug or is this message an evidence of
>> defective hardware?
>
> Back up any data you care about now. Use the smartmontools port or
> hunt down a utility from Samsung which'll do a surface test (read
> only, nondestructive).
>
> You can also run a "dd if=/dev/ad10 of=/dev/null bs=8192" to do a full
> read test under FreeBSD, and see how many CRC errors show up.
Actually, I would go with the "it's an operating system error." That's
exactly
the same error quite a few people (myself included) have been reporting
under
5.4 and 5-STABLE. In my case, I just installed the smartmontools port and
it's reporting that my drive is behaving perfectly.
This is 6.0-Beta? I have a couple spare drives here (destined to be part of
a RAID array on another machine). Perhaps after I get rid of some of the
current RL overloads, I will try it on this machine.
John
----------------------------------------------------------------------
John T. Farmer Owner & CTO GoldSword Systems
jfarmer@goldsword.com 865-691-6498 Knoxville TN
Consulting, Design, & Development of Networks & Software
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?42F9609E.1010207>