AMD??? (was Re: file corruption on tape reload)

[kf]

There's been some discussion on this list recently about AMD Athlon CPUs.
Of course there are a lot of variables, even in your tightly controlled
scenario, but this kind of problem is the kind consistent with primary
storage instability issues associated with the standard (pre-XP) Athlons.

Does this machine have an AGP video card?

Do you include the append="mem=nopentium" statement in /etc/lilo.conf?


kf

On Tue, 12 Mar 2002, J. Hart wrote:

=
=      I have been having difficulty making a good tape backup recently.  I use
= the following command to back up a directory :
=
=      tar cvM -f /dev/st0 2>&1 aminet | tee log
=
= I reload that into a seperate directory using the following command :
=
=      tar xvM -f /dev/st0 2>&1 | tee log
=
=      When I compare the original with the reloaded backup, I find that one of
= the files in the reloaded version is corrupted.  It turns out that a contiguous
= block of exactly 4096 bytes is corrupt.  If I reload the same backup tapes
= again, the corruption shows up at a different point in a different file, but the
= corruption still involves a block of exactly 4096 bytes.
=
=      I had previously used this same tape drive on an older machine running
= Slackware 4 and a stock kernel until very recently, and it worked perfectly
= there.  I am using the exact same model under RedHat 6.2 and the 2.2.16 kernel
= on another machine, and that works perfectly.  I have tried changing tapes and
= cleaning the drive tape path, with no effect on the problem.  I have also tried
= upgrading the kernel to the most recent version available at the time (then
= 2.4.16) to no avail.  I then tried rebuilding the kernel to use "aic7xxx_old"
= support, also with no change in the problem.  There is no indication of any
= error in any of the logs I have checked (dmesg, /var/log/messages).
=
= Does anyone have any idea on what I should be looking at here ?
=
= My setup is as follows :
=
= CPU                : 900mhz Athlon
= motherboard        : ASYS-A7V
= linux distribution : Slackware 8
= kernel             : 2.4.16
= scsi controller    : AHA-2940AU
= scsi drivers tried : aic7xxx
=                    : aic7xxx_old (after kernel rebuild)
= hard disk          : ATA100 IBM-DTLA-307045 45gb
= tar version        : tar (GNU tar) 1.13.25
= tape drive:
=      Vendor: WangDAT  Model: Model 3400DX     Rev: 5.0d
=      Type:   Sequential-Access                ANSI SCSI revision: 02
=
=
= Regards,
=
=      J. Hart
=
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=

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