4.2BSD restore(8)

[berliner at convex.UUCP]

/* Written by ed at mtxinu.UUCP in convex:net.unix-wizards */
> THIS IS BOTH INCORRECT AND DANGEROUS!  It was unnecessary with
> pre-4.2 versions of dump/restor.  With 4.2 and later versions
> of dump/restore, it will cause incrementals made after the edit
> to be *nearly useless* if a full restore is required at a later time.
> 
> Read the man pages for dump and restore for more details (or see the
> response I posted when the original request came through).
> 
> DON'T just change /etc/dumpdates!

If this is indeed true, you can easily fake it as follows (for dumping the
/xxx filesystem after completely restoring it from dump tapes):

	/etc/dump 0usf 30000 /dev/null /xxx >& /dev/null &

This will do an effective level 0 dump and update the /etc/dumpdates file
accordingly.  You also won't be prompted to mount tape 2 ...

Brian Berliner
Convex Computer Corporation
{ihnp4, sun, uiucdcs, rice, allegra}!convex!berliner