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Path: utzoo!linus!decvax!harpo!eagle!mhuxl!houxm!hocda!54394gt
From: 54394gt@hocda.UUCP
Newsgroups: net.unix-wizards
Subject: File system backup at night
Message-ID: <319@hocda.UUCP>
Date: Fri, 4-Nov-83 15:23:10 EST
Article-I.D.: hocda.319
Posted: Fri Nov  4 15:23:10 1983
Date-Received: Mon, 7-Nov-83 22:00:09 EST
Organization: Bell Labs, Holmdel
Lines: 11

Dave Henderson (try pads!dmh) has a filesystem backup scheme that is invoked
from cron.  I put up a simpler system on spastic and sps.  They use a shell
script to log off any users left on with kill -1 commands.  Then they
unmount filesystem(s), run 'fsck', then 'dd' to unused disk filesystem
slots.  Dave's scheme does a full pack-to-pack copy on machines with multiple
disk drives.  The script finally remounts filesystem(s).  When Dave gets to
work, he swaps disk packs (that means going single-user a few minutes).
We do not backup the entire disk, so we can 'volcopy' the disk to tape
during the working day.  This may not be as nice as using /etc/dump, but
it does work.
	George T., spastic!grt and others