Re: [uml-user] Using a shared root file system without COW.

[David C. <da...@da...>]

Mathew Johnston wrote:
> Can I have UML boot a read only root filesystem, and mount a read/write
> filesystem for /var, /tmp and /home?

Of course - You just need to mount them appropriatly. What is probably a 
good idea is to create either partitions on an imagefile, or setup LVM, 
rather than have a bunch of imagefiles and end up with ubd7 or something 
silly. For /tmp (and /var/tmp and /dev/shm), I'd just mount it tmpfs.

> My aim, is to have a root filesystem file, that is mounted read only in
> one VM, but modified (upgraded) in another VM, without having to shut
> down the VM with the read-only mount? Is this possible?

Should work, but you'll need /etc to be machine specific too.

David

-- 
David Coulson                                  http://davidcoulson.net/
d...@vi...                       http://journal.davidcoulson.net/