[Info-vax] NFS proxy database when booted from DVD?

[Craig A. Berry]

I'm contemplating dumping some backup savesets from an rx2660 running
TCP/IP Services V5.7 - ECO 5 to an NFS share.  Feel free to try talking
me out of it, but I may not have any choice.  I have read up on the NFS
client in chapter 23 of:

<https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c04622256>

which I guess are the latest docs even though they haven't been touched
in thirteen years.

Being old-fashioned, I'm contemplating what it would take to restore one
of these backups, such as to a brand new system with empty disk drives
after the old system went up in smoke.  I would obviously need to be
able to mount the NFS share after booting the system from something
other than local drives.  Among the options I'm aware of, InfoServer has
no chance, USB thumb drive is a maybe, and DVD is most likely.

What I can't figure out from the docs is how to make entries in an NFS
proxy database when booted from read-only media and there is no local
writable storage other than what I'm about to restore to.  The docs say
(in section 23.1.6), "If the local user or the NFS client has no proxy
for the host serving a DNFS device, all operations performed by that
user on that device are seen as coming from the default user (–2/–2)."

So how can I make the local SYSTEM account be seen as a particular user
on the NFS server if there is no way to create a proxy entry for it?  Or
do I have to make the NFS share and the savesets on it world readable so
that the "default user" can access them (ouch)?