How to rebuild while preserving an LVM disk

[Cliff Avey]

Oops, sorry for the typo. I meant FC7.

Cliff Avey wrote:
> I have an ancient (FC3) Fedora that I want to move to FC8. I figure it 
> might be cleanest to just rebuild it rather that upgrading (if that's 
> even possible, it's so old). I can blow everything away except one 
> thing. Separate from my OS disk, I have to SATA drives built into a 
> raid-0 with md, and then an lvm physical volume group built on that. I 
> need to keep that, and I don't have enough room anywhere else to 
> backup and restore it.
>
> If I unplug the raid drives, and rebuild my system, how can I hook 
> them back up? Is the configuration info describing the md array, and 
> the lvm groups stored on my os drive, which I'm blowing away. How can 
> I save and/or recreate it once I get the main system back up?
>
> Also, I don't know if there have been major changes to md or lvm (or 
> xfs for that matter, since the logical volume is formatted as xfs). 
> Will I have any problems using drives set up with a relatively old 
> version of this software.
>
> Thanks for your advice.
>