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Date:      Fri, 8 Oct 1999 11:32:02 -0700 (PDT)
From:      Matthew Dillon <dillon@apollo.backplane.com>
To:        Dan Diephouse <dragon.s@ix.netcom.com>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: Compaq Proliant 2500 file corruptions
Message-ID:  <199910081832.LAA03972@apollo.backplane.com>
References:   <37FE2031.DF16E119@ix.netcom.com>

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:1. I was wondering if anyone knew of any such problems, or what other
:info I could provide to help figure this out.
:2. There are no panics or anything.  I can't seem to find an isolated
:case to look at.  Anyone have any idea how I would go about debugging
:this?
:3.  Would I be better off running the newer driver in current?  I keep
:tabs with whats going on in the current list, I just need a somewhat
:stable machine.  It's only going to get light usage.
:
:Thanks for any help.  Sorry this is so vauge.  I'd really like you to
:get a dmesg.  Below is the kernel config....

    The very first think I would do is look at the disklabel for the drive
    and make sure that none of the offset/sizes overlap (except for the
    'c' whole-disk partition, of course).

    e.g. take the offset, add the size, make sure the result is the offset
    for the next partition, and repeat.  The final offset+size should of course
    not exceed the size of the disk.  Partitions can slice up the disk
    out of order, but if they overlap (except for c) you will get file
    corruption.

    Also look for error messages in /var/log/messages.

# disklabel da0	(or in your case perhaps wd0)
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:   262144        0    4.2BSD     1024  8192    16   # (Cyl.    0 - 16*)
  b:  1048576   262144      swap                        # (Cyl.   16*- 81*)
  c:  4192902        0    unused        0     0         # (Cyl.    0 - 260*)
  d:   262144  1310720    4.2BSD     1024  8192    16   # (Cyl.   81*- 97*)
  e:   262144  1572864    4.2BSD     1024  8192    16   # (Cyl.   97*- 114*)
  f:  2097152  1835008    4.2BSD     1024  8192    16   # (Cyl.  114*- 244*)
  g:   260742  3932160    4.2BSD     1024  8192    16   # (Cyl.  244*- 260*)

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>



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