Subject: Re: uncorrectable data error reading...
To: Eric Jacoboni <jaco@teaser.fr>
From: Andy R <quadreverb@yahoo.com>
List: current-users
Date: 11/14/2001 12:02:26
--- Eric Jacoboni <jaco@teaser.fr> wrote:
> I've experimented a crash of my -current system
> today:
> 
> $ uname -a
> NetBSD titine.fr.eu.org 1.5Y NetBSD 1.5Y
> (TITINE-Current-20010918)\
> #13: Mon Nov 12 18:33:28 CET 2001   \
>
root@titine.fr.eu.org:/usr/src/sys/arch/i386/compile/TITINE
> i386
> 
> Context:
> 
> I was trying to read news with Gnus and it seems
> that, at same time,
> the news daily crontab start. Then, my system deadly
> froze and the
> only solution was to press the big button.
> 
> The only messages about this crash (just before it,
> i think) are found
> in log/messages:
> 
> Nov 14 18:25:17 titine /netbsd: wd1b: uncorrectable
> data error reading fsbn 5715
> 2 of 57152-57159 (wd1 bn 1148816; cn 1139 tn 11 sn
> 11), retrying
> Nov 14 18:25:36 titine /netbsd: wd1b: uncorrectable
> data error reading fsbn 5715
> 2 of 57152-57159 (wd1 bn 1148816; cn 1139 tn 11 sn
> 11), retrying
> Nov 14 18:25:36 titine /netbsd: wd1b: uncorrectable
> data error reading fsbn 5715
> 2 of 57152-57159 (wd1 bn 1148816; cn 1139 tn 11 sn
> 11), retrying
> Nov 14 18:25:36 titine /netbsd: wd1: transfer error,
> downgrading to Ultra-DMA mo
> de 2
> Nov 14 18:25:36 titine /netbsd: wd0(pciide0:0:0):
> using PIO mode 4, Ultra-DMA mo
> de 5 (Ultra/100) (using DMA data transfers)
> (etc.)
> 
> 
> More generally, i've found that, when cron jobs
> (like system daily
> cron tasks) start, the system slow down _very_
> noticeably (e.g. when
> i'm typing some document during such a cron job,
> words take long time
> to appear). I wonder if it not the same pb.
> 
> As i've a Athlon 1GHz/256Mb RAM and ATA100/66 disk,
> i can't imagine is
> related to my system (this pb doesn't appears with,
> say, FreeBSD or
> Solaris). May be a nice value to adjust ?
> -- 
> Éric Jacoboni, né il y a 1309200239 secondes

Eric, I had a similar problem with what appears to be
a very similar hardware configuration. It's not clear
what the solution was, but I think a bios update from
my motherboard manufacturer may have cleared it up. I
have an ECS K7VZA. There was some problem with the
chipset that could have been causing it so I just
upgraded it. I also reformatted the filesystem that
the problem was occurring on, because I think the
initial problem started during install when the
filesystem was formatted. I haven't seen the problem
since I've done this.

Andy


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