Dear list,
I want to build up a NFS share for several host.
The base system is always equal, only some files are different (files in
/etc and /var, maybe more).
The structure should look like:
Base system is on /basesystem
Then I want a directory for every host:
/nfsroot/host1
/nfsroot/host2
..
/nfsroot/hostn
Client 1 will boot via lan and mount the /nfsroot/host1 via NFS.
On the server the mount could look like:
mount -t nullfs /basesystem /nfsroot/host1
mount -t nullfs /basesystem /nfsroot/host2
If the host1 changes now a file the changed file is not stored in
/basesystem but in /nfsroot/host1.
(so you can think about a filesystem in two layers, the ground layer is
/basesystem and readonly, changes will go to /nfsroot/hostn)
If i upgrade the /basesystem all files should be available for all hosts
expect the files the host changed by itself (they are stored in the
nfsroot/hostn directory).
In FreeBSD there is a file system available called nullfs which could be
used for this.
Is there a similar filesystem for Linux available, too?
Thanks,
Matthias
--
"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the universe trying to
produce bigger and better idiots. So far, the universe is winning." --
Rich Cook
