Re: Upgrading from FC8 to F12 - please help

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Wednesday, November 25, 2009, 9:30:03 PM, you wrote:

> On Wed, 25 Nov 2009 20:44:04 +0300
> Andrew Junev <a-j@xxxxxx> wrote:

>> I can see in the log files it detects my disk as /dev/sda, but then it
>> says:
>> wrong # of devices in RAID set "pdc_eceihagjh" [1/2] on /dev/sda
>> So the installer probably rejects an idea to install Fedora on a
>> degraded array - am I right? Is there a way to force it?
>> I'd like to keep an old system on the spare drive for the time being.
>> It is actually accessible when booting from a Live CD and I think I
>> may need some configuration files from there to set up new system
>> correctly.

> I am not an expert in this, but my question would be, "Are you
> comfortable with using gparted or fdisk to change the drive so it is
> seen as empty?"  Alternatively you could use mke2fs to create an empty
> ext? filesystem on it.  That should take care of the anaconda issue.

> By the way, it sounds like you are doing just fine in resolving this
> issue.

Well, unfortunately I don't have much of experience in Linux. But I'm
trying to learn. :)
I probably could repartition a drive with fdisk - shouldn't be a big
deal. But I don't see the point. I do not use a software RAID
(dmraid). RAID1 is setup on my SATA controller card (Promise
FastTrak). While installing F12 onto a degraded RAID, anaconda does
not show /dev/sda at all - otherwise repartitioning should have been
possible right from the installer. Am I wrong?

I searched on the Net and found some old discussions on installing
Fedora onto a degraded RAID1. In short, it was not possible.
There may be a workaround in case a software RAID is used, but I found
nothing regarding a RAID setup on a controller card.

There was an old bug report on this topic:
It was closed with wontfix message.
Is it still the same in Fedora 12?

P.S. Personally I don't understand it. If I have a mirror and want to
do something risky (an upgrade) - I need to take one disk out while
the system is still fine, and then do the risky part. So that if it
doesn't work as expected - a fallback is always possible... Maybe
there's a different idea behind forbidding to install/upgrade a
system on a degraded array?

Best regards,

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