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Date:      Mon, 19 Jan 2009 10:54:17 -0700
From:      Chris Jones <chris@cjones.org>
To:        freebsd-questions@freebsd.org
Subject:   DUMP: read error: Bad address
Message-ID:  <4974BE49.2080508@cjones.org>

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Hi folks--

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.

Chris



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