Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!uwm.edu!rpi!dali.cs.montana.edu!mathisen
From: mathisen@dali.cs.montana.edu (Jaye Mathisen)
Newsgroups: comp.unix.ultrix
Subject: Re: Missing swap space?
Message-ID: <2304@dali>
Date: 12 Aug 90 17:47:59 GMT
References: <444@gca.UUCP> <13722@cbmvax.commodore.com> <446@gca.UUCP>
Distribution: na
Organization: Montana State University, Dept. of Computer Science, Bozeman MT 59717
Lines: 29

In article <446@gca.UUCP> beaulieu@gca.UUCP (Larry Beaulieu) writes:
|In article <13722@cbmvax.commodore.com>, grr@cbmvax.commodore.com (George Robbins) writes:
|> > 
|> > 	Also, note that you can use any available partition for
|> > 	your second swap space; use of partition b is not
|> > 	a prerequisite.
|> 
|> Subject to the concern that using the a or c partition for a swap area will
|> probably overwrite the volume label, making access to other partitions on
|> the drive "interesting".
| 
|	1)	Use of partition c means using the entire drive as a swap space, so
|		'access to other partitions' is irrelevant.  I do this routinely 
|		on dataless Sun 3/80's (root file system, page/swap reside locally) 

Well, it may work that way on Sun's, but it looks like under Ultrix it don't.
I added an RZ56 as a swap disk, and tried to swap on partition c, and it
hung in the swapon command...  The same thing happened on a mVII, under Ultrix
3.1...  When I tried to swap on partition a, I was then unable to access
the rest of the partitions. 
|	2)	As to use of partition a: as a swap space, I include the following
|		/etc/fstab off one of our Ultrix systems: (VAX 11/780 w/2 x RA81):
|
|		/dev/ra0a:/:rw:1:1:ufs::
|		/dev/ra1a::sw:0:1:ufs::


I think something changes between Ultrix 2.0, and 3.0 as to where information
about the disks is stored.