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Date:      Tue, 6 Jun 2000 08:27:14 +0930
From:      Greg Lehey <grog@lemis.com>
To:        Brian Budnick <dreamboy@aros.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Hard Drive Problem!
Message-ID:  <20000606082714.B55519@wantadilla.lemis.com>
In-Reply-To: <FCEJKOGNFDIDDJEMEMMOMEGOELAA.dreamboy@aros.net>
References:  <FCEJKOGNFDIDDJEMEMMOMEGOELAA.dreamboy@aros.net>

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On Monday,  5 June 2000 at 11:17:06 -0600, Brian Budnick wrote:
>
>
> i have a hard drive that seems to be having fits or something. Every
> hour or so I get the following in my /var/log/messages:
>
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 721135 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 721695 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 722031 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 722367 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 786671 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 786671 retrying
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk# 788015 retrying
> Jun  5 09:26:13 demon last message repeated 2 times
> Jun  5 09:26:13 demon /kernel: ad2: UDMA ICRC READ ERROR blk#
> 788015ata1-master: WARNING: WAIT_READY active=ATA_ACTIVE_ATA
> Jun  5 09:26:13 demon /kernel: falling back to PIO mode
>
> then i ran the following:
> [root@demon /sbin]# fsck -f /dev/ad2s1e
> ** /dev/ad2s1e (NO WRITE)
> ** Last Mounted on /ad2
> ** Phase 1 - Check Blocks and Sizes
> ** Phase 2 - Check Pathnames
> ** Phase 3 - Check Connectivity
> ** Phase 4 - Check Reference Counts
> ** Phase 5 - Check Cyl groups
> 4691 files, 148820 used, 4678063 free (1615 frags, 584556 blocks, 0.0%
> fragmentation)
> [root@demon /sbin]#
>
> So i'm assuming that the hard drive passed or something.

fsck won't help there.  It just checks the file system structures.

> Am i missing some better command to have it do an entire search?

I can't think of anything offhand.

> Any other ideas what might be going on?

The message is pretty straightforward.  It even gives you the
locations of the errors.  You have CRC errors when reading specific
data blocks.  About the only thing that might help is a low-level
format.

Greg
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