On Tue, 25 Mar 2003, Kelly Sauke wrote:
> Maybe I need a little clarification of what Live Upgrade does. I've > gotten a lot of response of what I would call installer utilities but > not a Live Upgrade (if I'm wrong please point it out to me). 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. If there is something in the patch that doesn't work or > screws up the machine, then you just reboot off the original boot > environment and you're back to where you were before upgrading and still > have access to the patched boot environment to fix it. Its great for ... AFAIK, there is not a package that automates this the way that 'live upgrade' does. However, you can do this manualy with rpm and the '--root' option. Of course you still have to have the extra partitions to create your alternat environment in. Once you have copied the files over to the new partitions and modified the /etc/fstab in the new root. You need to add an entry to grub/lilo with root=/dev/hdxx pointed at your new root partition so you can boot to it. Then you have the task of keeping the configuration information upto date in the alternate boot environment. I suppose that you could use tripwire or aide to help with this. This would be an intresting project to work on. HTH, Reece Dike
