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My (NetBSD) DomUs are going to be mostly identical. I was thinking ofhaving a shared, read-only /usr and separate /var. I probably needseparate roots, if only to have separate /etc/rc.conf files. /usr will be a real partition, probably shared with the Dom0. The Dom0 would also havea separate partition that held the vnds for the DomUs.
I have a very similar situation, except in my case I need to be able to do local installs of software in /usr, thereby precluding sharing all of /usr.
Another option to keep in mind is 'vfs.generic.magiclinks=1', enabling system-specific copies of system config files. After working with a Tru64 cluster at work, I can see lots of practical uses. Eg. I'm using it for system-specific .screenrc in an NFS mounted home directory:
Wow. Very interesting. But my 3.0-STABLE systems don't seem to have any magic symlinks and googling a bit doesn't give much information either. Is this integrated in -current (which I don't have a system running right now) or is hidden elsewhere?
Another option that I'm considering is whether I can do anything useful with union mounts to keep down the size of the images for the DomUs (i.e. mounting /usr via NFS from Dom0 and then mounting a smaller vnd on top of that).
Anyone tried that? Johan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (Darwin) iD8DBQFFOoVRKJmr+nqSTbYRAjTCAJ9t/zg9UNXwA82+nGFOWBF/H0OLNwCfRt/l sq8KPjUr+Dt6udF/WOAKWXs= =LcKp -----END PGP SIGNATURE-----