Re: Live Upgrade for Linux
From: Seth Arnold (sarnold@wirex.com)
Date: 03/26/03
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Date: Wed, 26 Mar 2003 10:11:46 -0800 From: Seth Arnold <sarnold@wirex.com> To: focus-linux@securityfocus.com
On Tue, Mar 25, 2003 at 02:20:27PM -0600, Kelly Sauke wrote:
> What Live Upgrade does under solaris is it creates a complete
> alternate boot environment with a root /usr /var and any other
> filesystem you want. Then you can apply patches etc to this other
> boot environment and boot off of that.
Ahh! That's kindof a cool idea.
When partitioning your hard drives, make duplicates of your "replicated"
filesystems, and ask /etc/fstab to mount them under /testing/ in their
normal ordering. Then, use either the packaging tool's --chroot option
(I expect that all tools can be asked to use a chroot environment) or
just use the chroot command to run them all within the little
environment.
Then, a few minutes with a text editor and /etc/lilo.conf,
/etc/grub.conf, /etc/yaboot.conf, whatever, and you're good to go. (A
small script to modify/replace /etc/fstab would probably help smooth the
process along.)
:)
-- http://sardonix.org/
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