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Date:      Tue, 20 Jan 2009 13:46:49 -0500
From:      Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
To:        Chris Jones <chris@cjones.org>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: DUMP: read error: Bad address
Message-ID:  <44ljt5olwm.fsf@be-well.ilk.org>
In-Reply-To: <4974BE49.2080508@cjones.org> (Chris Jones's message of "Mon\, 19 Jan 2009 10\:54\:17 -0700")
References:  <4974BE49.2080508@cjones.org>

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Chris Jones <chris@cjones.org> writes:

> I have an amd64 machine with two drives. I've got my system set up on
> ad8, and I'm building a RAID0 array using gvinum that will span ad8
> and ad10. So for now, I have partitions on ad8 plus a set of volumes
> on ad10 that I want to move all my data to.
>
> Today I was doing a test move of all the data, using dump | restore
> like this:
>
> # dump -0aL -f - /var | ( cd /mnt/var && restore -rf - )
>
> I got about a dozen messages like this:
>
>  DUMP: read error from /dev/ad8s1d: Bad address: [block 10992192]:
> count=5120
>
> What is causing this message, and is it a cause for alarm? Here's my
> bsdlabel for ad8s1:
>
> # /dev/ad8s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>  a:  1048576        0    4.2BSD     2048 16384     8
>  b:  4123872  1048576      swap
>  c: 488279547        0    unused        0     0         # "raw" part,
> don't edit
>  d: 104857600  5172448    4.2BSD     2048 16384 28528
>  e:  2097152 110030048    4.2BSD     2048 16384 28528
>  f: 376152347 112127200    4.2BSD     2048 16384 28528
>
> Thanks in advance for any help.

It could be a serious problem, but is not necessarily such.
Can you use smarttools to query the disk firmware for *its*
opinion?

-- 
Lowell Gilbert, embedded/networking software engineer, Boston area
		http://be-well.ilk.org/~lowell/



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