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From: les@chinet.chi.il.us (Leslie Mikesell)
Newsgroups: comp.unix.sysv386
Subject: Re: Remote permissions for NFS backup
Message-ID: <1991Feb28.204247.7270@chinet.chi.il.us>
Date: 28 Feb 91 20:42:47 GMT
References: <1991Feb25.191542.29887@eecs.wsu.edu>
Organization: Chinet - Chicago Public Access UNIX
Lines: 21

In article <1991Feb25.191542.29887@eecs.wsu.edu> swetik@eecs.wsu.edu (Paul Swetik) writes:
>Having recently installed ISC (via Dell) NFS, I have not been able
>to backup files cleanly across the net. Is there a clean way to
>gain read permission for root on a client machine to backup NFS
>mounted 'read owner' files to the client tape drive?

If you have something resembling rsh or remsh (remote shell) you can
use the "afio" program to generate the backup on the tapeless
machine and write it to the other machine's tape drive (another copy
of afio runs there under rsh to access the device).  Afio was posted
a few years ago to one of the source groups.  GNU tar should be able
to do something similar or you could do it yourself with cpio or
tar piped to rsh running dd at the machine with the tape drive.

The disadvantage of this approach is that you must make the backups
separately per machine instead of slurping an entire network through
the NFS mounts.  The advantage is that it maintains the file system
view as well as the security of the client machines.

Les Mikesell
  les@chinet.chi.il.us