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.
That is what I did going from FC4 to FC7.
My dm raid is my /home partition.
I copied all my /etc files to a memory stick for a reference.
I made sure my LVM partitions had labels as FC7 requires labels. Use
something that is unique, not just home to ensure that there is no conflict.
I also wrote down my LVM and RAID settings.
I unplugged the drives to be safe.
I don't have the full details as it was my home computer, but I then
installed FC7 on the clean HD. I had the installer create a separate
/home partition (which will be used for other stuff later).
I then plugged the SATA drives back in and with the CLI, re-configured
the RAID and made sure that was working. I then entered the LVM
configurations into the lvm.conf file and checked to see if all was
working by mounting the partition.
Changed the /etc/fstab to mount the partition as /home and rebooted. It
went much easier than I had expected.
--
Robin Laing
