removing RAID 1 from a RH 7.1 box

removing RAID 1 from a RH 7.1 box

[Trevor Morrison]

HI,

I have a RH 7.1 box with a Software RAID 1 setup.  I am trying to
upgrade the box to RH 9 using RH upgrade feature.  When
I boot the system off the CD-ROM all works well until I try to upgrade.
The system tells me that it "cannot find a valid RH
installation."  It does not see the /dev/md/0 structure.  I have tried
various boot prompt command, but to no avail.  Does
anyone know a way around this?

Or, does any one know how to remove the RAID 1 setup from my system.  I
followed the example for the the "Software RAID HOWTO" and it worked
fine the first time.  Now, it looks like I may have to reverse it, but
I don't know how.

TIA

--
Trevor Morrison
Hailix, LLC
trevor@hailix.com

Re: removing RAID 1 from a RH 7.1 box

[Mads Peter Bach]

Trevor Morrison wrote:

> Or, does any one know how to remove the RAID 1 setup from my system.  I
> followed the example for the the "Software RAID HOWTO" and it worked
> fine the first time.  Now, it looks like I may have to reverse it, but
> I don't know how.

You should be able to do that, by just doing this:

- Change your partition types from fd back to 83
- Move /etc/raidtab to some other name
- Change lilo back to not using /dev/md/*
- Change /etc/fstab back to not using /dev/md/*
- Reboot

-- 
Mads Peter Bach
Systemadministrator,  Det Humanistiske Fakultet, Aalborg Universitet
Kroghstræde 3 - 5.111, DK-9220 Aalborg Øst - (+45) 96358062
# whois MPB1-DK@whois.dk-hostmaster.dk

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Re: removing RAID 1 from a RH 7.1 box

[Trevor Morrison]

Thanks for the info, but I have a problem of when I fdisk /dev/sda1 and go
to print the table nothing shows up, so I cannot change the partition type.
I can easily change the swap partition type.  The entire disk is mounted
under /dev/md0.  What am I doing wrong? Note:  I have also tried to so this
same procedure by booting into linux single and also from the RH 9 rescue
mode.  I still get the same result.

Thanks again,

Trevor

Mads Peter Bach wrote:

> Trevor Morrison wrote:
>
> > Or, does any one know how to remove the RAID 1 setup from my system.  I
> > followed the example for the the "Software RAID HOWTO" and it worked
> > fine the first time.  Now, it looks like I may have to reverse it, but
> > I don't know how.
>
> You should be able to do that, by just doing this:
>
> - Change your partition types from fd back to 83
> - Move /etc/raidtab to some other name
> - Change lilo back to not using /dev/md/*
> - Change /etc/fstab back to not using /dev/md/*
> - Reboot
>
> --
> Mads Peter Bach
> Systemadministrator,  Det Humanistiske Fakultet, Aalborg Universitet
> Kroghstræde 3 - 5.111, DK-9220 Aalborg Øst - (+45) 96358062
> # whois MPB1-DK@whois.dk-hostmaster.dk
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
Trevor Morrison
Hailix, LLC
trevor@hailix.com



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RE: removing RAID 1 from a RH 7.1 box

[Riley Williams]

Hi Trevor.

 > Thanks for the info, but I have a problem of when I fdisk
 > /dev/sda1 and go to print the table nothing shows up, so
 > I cannot change the partition type.

You apply fdisk to /dev/sda and not /dev/sda1 if that helps...

Best wishes from Riley.
---
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