mdraid and hpa upgrade issues (was: Fedora Rel-Eng Meeting Recap)

Tony Nelson tonynelson at
Fri May 25 01:55:08 UTC 2007

At 2:49 PM -0500 5/24/07, Bruno Wolff III wrote:
>On Thu, May 24, 2007 at 15:36:16 -0400,
>  Tony Nelson <tonynelson at> wrote:
>> At 2:55 PM -0400 5/24/07, Jarod Wilson wrote:
>> >Jarod Wilson wrote:
>> >> Okay, fc6 mdraid to f7 upgrading via anaconda works for me now.
>> >>
>> >>> Once that's done, I'll see what I can do to see if the kernel option
>> >>> libata.ignore_hpa can be used to help those who don't really wanna
>> >>> nuke their entire system to move from FC6 to F7.
>> >>
>> >> Starting in on this right now...
>> >
>> >Got the problem reproducing, but...
>> >
>> >   Unknown boot option 'libata.ignore_hpa=1': ignoring
>> >
>> >Talked to davej, module parameters can't be passed on the command line
>> >just yet. So anyone with an FC6 system that uses part of the host
>> >protected area is currently not able to upgrade to F7 using anaconda
>> >(FC6 to F7 can be done with some modprobe.conf magic and upgrading via
>> >yum though).
>> >
>> >davej is going to poke some folks who were working on a patch to allow
>> >module parameters to be passed on the kernel command line.
>> Well, this keeps me from upgrading to F7!
>If you are using the HPA area, couldn't you update the disk so that the
>area isn't there any more? The wikipedia entry for HPA suggests that there
>is a command for getting the real size and another for updating the boundry.
>So it sounds like you should be able to update this on F6 before doing the

It seems doable but would need at least two backups, as the first one will
almost certainly be put to use as the real data.  And all for a measily 34
MB that is automatically discovered by the current kernels.

If a tested tool makes it into extras I'll do it with one backup!
TonyN.:'                       <mailto:tonynelson at>
      '                              <>

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