On Wed, 29 Apr 1998, Dave Wreski wrote:
>
> > I've got a nicely humming, heavily modified RedHat 4.2 with a 2.1.96 SMP
> > kernel. I want to use glibc for development, and so far no-one has
> > provided any tips on how to install glibc on a RedHat 4.2 system without
> > having to upgrade to 5.0. Unfortunately from what I've read on this
> > mailing list, the upgrade from 4.2 -> 5.0 is far from painless. I hope
> > RedHat will improve the upgrade process from 4.x systems, since I really
> > don't want any significant downtimes due to some stupidities in the
> > upgrade process.
> > Any comments on this from the people in the know?
>
> First, if its running nicely, why do you want to upgrade? And your
> worried about stability, yet your running a 2.1.x kernel?
I'm not worried about stability per se. I'm worried about the upgrade
process screwing things up. I've heard that the upgrade process is not
transparent, in the sense that packages get updated and the amount of
tweaking to get the installation to the same configuration state is
minimal.
Using 2.1.x kernels is a calculated risk I've taken, particularly since I
was not impressed with the SMP support in 2.0.x. Besides, the more people
are testing SMP code, the better.
>
> There are several things you can do, without destroying your existing 4.2
> installation:
>
> - install a second hard disk, used to dual-boot between the two
I forgot to mention that I am limited by hard disk space.
Unfortunately I can't afford the luxury of more hard drive space right
now.
>
> - install 5.0 as a 'change-root' install, meaning you'd basically get 5.0
> on one console, and 4.2 on another
>
> - Download the 5.0 glibc libs from sunsite, and install them in an
> alternate location, and add that location to your /etc/ld.so.conf, so
> libraries that require glibc libs will use them, otherwise use the default
> 4.2 libs. Haven't actually tried this, but it may require a few other
> changes, like the installation of a second /usr/include tree...
I've tried this, but I have not been successful so far. I will be trying
this again. But RedHat claims that it is possible to upgrade 4.2 ->5.0.
I've not heard encouraging things about the upgrade process. I know a
clean install is almost flawless, but I am not willing to lose a working
system. At the same time, I do want to upgrade. Hence I am asking
whether the upgrade process will be improved in 5.1.
Thanks for the response, Dave.
martin
>
> Dave
>
>
>
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