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From: asp@COS.COM (Andrew S. Partan)
Newsgroups: comp.unix.questions
Subject: Restoring to a smaller fs?
Message-ID: <482@cos.COM>
Date: Fri, 16-Oct-87 14:58:03 EDT
Article-I.D.: cos.482
Posted: Fri Oct 16 14:58:03 1987
Date-Received: Sat, 17-Oct-87 21:58:48 EDT
Organization: Corporation for Open Systems, McLean, VA
Lines: 33
Keywords: dump/restore, smaller fs

I know that at one point, one could not dump a file system, make a new
smaller file system, and restore that dump into that smaller file
system.  Is this still so?  My restore(8) man page says something about
'running as a user process' so that (I assume) it does not muck with
the raw disk but just creates files like any 'normal' user process
might.  This leads me to believe that I could do a restore into a
smaller partition (assuming that there is sufficient disk space to hold
all of the files).  [I really do not want to have to tar files out &
back in again.]

We are running Sun OS 3.4 (based on BSD 4.2, with some BSD 4.3 and
System V stuff).  I think that I am using BSD 4.2's dump/restore.

I have one file system (partition) about 70% full with about 40 Meg
left over.  I need to make another partition larger (and thus make the
first one smaller).  If I make the first partition smaller by about 20
Meg, its files will still fit onto it.

Can I dump the partition, make it smaller, and restore my dump onto
that (smaller) partition?

Extract from restore(8):
	....  Because restore runs in user mode, it has no control over
	inode allocation; this means that restore repositions the
	files, although it does not change their contents. ...

Please reply by mail, I will summarize to the newsgroup.

Thanks in advance for any help.
-- 
	--asp (Andrew Partan @ Corporation for Open Systems)
	-- asp@cos.com
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