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Re: Share /boot between fc3 and fc5?



At 8:31 PM -0700 3/11/06, Charles Curley wrote:
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>On Sat, Mar 11, 2006 at 09:38:36AM -0500, Tony Nelson wrote:
>> I'd like to install FC5t3 on my system, in a spare LVM partition.  I
>> already have 4 basic partitions, one of which is my /boot.  I'd need to
>> have FC3 and FC5t3 sharing /boot.  Do I need to do anything special when
>> installing FC5t3?  Should I let the installer know about the real /boot and
>> do its thing?  Should I have it put everything in the LVM partition and
>> copy the relevent files from its /boot to the real one, and modify the
>> grub.conf by hand?
>
>Yes, you can do it. The process below is what I do when I move from
>one major FC rev to the next. I have two 20 GB partitions, one root
>for FC(n), the other for FC(n+1). They share /boot, /home, and a
>partition for miscellaneous storage.

OK, we're on the same wavelength.


>You should back /boot up entirely before you install. (Heck, you
>should back *everything* up before the installation.)

Had decided to do that (/home, /boot, /etc, /usr/local -- /opt is empty).
Also, I'll make a separate tarball of /boot so I won't have to grovel
through the big backup to restor /boot if needed.

>As you said
>elsewhere, the file names will be different -- with one exception.
>
>Do not allow the installation to write a new file system to /boot (or
>anything other than the new root partition). Let the new installation
>stomp on /boot/grub/grub.conf. Then boot to the new installation, and
>use your backup copy of grub.conf to restore the stanzas for the old
>installation.

OK, I had hoped it would be no worse than that.  (I didn't quite hope it
would know to /update/ my grub.conf.  Perhaps I should file a RFE.)


>You can share /home between them (if it's on its own partition), which
>saves you a bit of configuration hacking. However, you may find that
>the new versions of some apps change the config files to the point
>where you cannot go backwards.

I might try that sort of thing later, but not for a test release, and I'd
have to re-partition.


>Once FC5 stable (ahem) is released, do a fresh installation!

Well, yes.  That's why I'm putting FC5t3 on its own partition.  If I do try
an upgrade, it will be to a copy of my existion installation (copy to my
spare partition, get it working again, try an upgrade install, look for any
old packages, make sure they're up to date, look for any .rpmnew or .rpmold
files, resolve them).

>Then
>start porting your old setup over by mounting read-only (ro) the old
>root partition to the new one, and comparing files. Make a list of the
>changes you make, so you have that list when FC6 comes out.

Via diff, or by hand as I think of them?


>Works like a charm.

Good to hear.  Thank you.
____________________________________________________________________
TonyN.:'                       <mailto:tonynelson georgeanelson com>
      '                              <http://www.georgeanelson.com/>


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