Mybe were talking RedHats to SuSe's or something.
I don't understand why /boot (the target of zipl) can be separated
from the load point (/) file structure and /etc can't be. USS seemed to
make some sense in that the things that made the image unique could be
split away from the base code. ie. /etc, /var, /dev (and /tmp)
A kernel upgrade would modify /lib, /dev and /boot. To roll out the
new kernel without applying it individually in each image I would have
to copy a new "/" file structure and a new /boot file structure and
then copy my original /etc back in over top of it. Right?
--- "Post, Mark K" <[EMAIL PROTECTED]> wrote:
> /lib is, and must be, part of the root file system (unless you're
> willing to
> play the games that I am not). I'm not going to replace my entire
> root file
> system just to upgrade a kernel. So, no problem.
>
> Mark Post
>
> -----Original Message-----
> From: Hall, Ken (ECSS) [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, February 20, 2003 12:58 PM
> To: [EMAIL PROTECTED]
> Subject: Re: R/O Linux guest?
>
>
> What about /lib (and particularly /lib/modules)? You can't just
> switch
> kernels without having the corresponding modules available.
>
> Not to mention /var, and all of the RPM database stuff.
>
> Splitting off /boot seems to be mainly a relic from the days when
> Linux
> wouldn't boot if the root filesystem was bigger than 500mb. (or
> whatever) on
> Intel boxen. I haven't seen a good reason to do it
> for a long time. If it's too big, it's a waste of space, and if it's
> too
> small, you can't keep the multiple kernels you want there.
>
> > -----Original Message-----
> > From: Post, Mark K [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, February 20, 2003 12:13 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [LINUX-390] R/O Linux guest?
> >
> >
> > Having /boot separate allows you to decide which volume you
> > want to IPL
> > from. It also allows you to have multiple IPL volumes
> > available. I also
> > have a /boot1, /boot2.4, etc. /root is root's home directory
> > and it forces
> > me to be careful with how much junk I put there. If it were
> > part of /, then
> > I could conceivably fill it up by being careless.
> >
> > In my particular case, /usr, /opt, are shared read-only with
> > other systems.
> >
> > I'm not sure what you mean by a kernel upgrade forcing me to
> replace
> > multiple minidisks. Most of the stuff that would need to be
> > upgraded along
> > with the kernel typically lives in /usr.
> >
> > Mark Post
> >
> > -----Original Message-----
> > From: Chet Norris [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, February 20, 2003 7:24 AM
> > To: [EMAIL PROTECTED]
> > Subject: Re: R/O Linux guest?
> >
> >
> > Per the below (03/12/02) response, what devices are Read-Only and
> > shared? It seems to me that only /usr and /usr/src could be. Then
> why
> > separate /root and /boot? I know you had a good reason, and I'm in
> the
> > process of re-mapping my file structures. Also, doesn't a kernel
> > upgrade force you to roll out multiple minidisk replacements?
> > Too bad we can't map it the same as USS with a separate /etc
> > per image.
> >
> > From Archives Date: Tue, 12 Mar 2002 18:38:59 -0800
> > Mark Post wrote:
> > >/boot, /var and /tmp do _not_ have to be on the root file system.
> > >Mine aren't. Unless you play some games, /bin, /dev, /etc, /lib,
> > >and /sbin have to be part of the root file system. Anything else
> > >can be easily put on a different one.
> > >~ > df
> > >Filesystem 1k-blocks Used Available Use% Mounted on
> > >/dev/dasdb1 52284 35868 13720 72% /
> > >/dev/dasdc1 1062992 388560 620436 39% /tmp
> > >/dev/dasdd1 1417324 1337424 7904 99% /usr
> > >/dev/dasde1 111572 50520 55296 48% /var
> > >/dev/dasdf1 104596 73036 26164 74% /opt
> > >/dev/dasdg1 10432 1756 8140 18% /boot
> > >/dev/dasdh1 52284 4936 44652 10% /root
> > >/dev/dasdi1 24384 12912 10216 56% /home
> > >/dev/dasdj1 921228 773876 100556 89% /usr/src
> >
> > Mark Post
> >
> >
> >
> > =====
> > Chet Norris
> > Marriott International,Inc.
> >
> > __________________________________________________
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> >
=====
Chet Norris
Marriott International,Inc.
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