From:	CRDGW2::CRDGW2::MRGATE::"SMTP::CRVAX.SRI.COM::RELAY-INFO-VAX"  8-APR-1991 18:09:55.97
To:	ARISIA::EVERHART
CC:	
Subj:	Update on MOUNT/FOREIGN/SHARE problem

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Date: 8 Apr 91 12:16:00 EDT
From: "Edward J. Groth" <groth@pupgg.princeton.edu>
Subject: Update on MOUNT/FOREIGN/SHARE problem
To: "info-vax" <info-vax@sri.com>

You may remember that I posted the following question to info-vax
on April 2.  

> Folks - I have a VS3100/48 with two RRD40s.  Each contains an
> ISO9660 CDrom.  I want to use this system as a server for these
> drives, so I try to mount both of them as /FOREIGN/SHARE. 
> However, when the second is mounted, the system just mounts the
> first one again!  Is there any solution to this problem?
> The system is running VMS V5.2.  Below is an annotated transcript
> of a session where I try to mount the disks, both /SHARE and
> without /SHARE.  Thanks - Ed

[transcript deleted]

Last weekend I upgraded to VMS V5.4-2.  This has caused a new
behavior.

MOUNT/FOR/SHARE device1   followed by
MOUNT/FOR/SHARE device2

produce the same behavior as previously - the first disk is
mounted twice.

However,

MOUNT/FOR/SHARE device1 dummy_label_1   followed by
MOUNT/FOR/SHARE device2 dummy_label_2

Mounts the two disks - just like I want.  In V5.2, the first disk
was mounted twice even if dummy labels were specified.

I have tested that two users can issue the above commands and get
access to the disks.

So, looks like I'm all set, right?   WRONG!!!!

When the dismount command is issued, the system crashes!  It
crashes so hard nothing is written to the error log.  (This is a
workstation and I don't have a dump file installed.)

I believe that now I have found a bug - if a non-privileged user
can cause a system crash, that can't be a feature!

					- Ed


/----------------------------------------------------------------------\
| Edward J. Groth            | Phone: 609-258-4361                     |
| Physics Dept., Jadwin Hall | Fax:   609-258-1124                     |
| Princeton University       | SPAN/HEPNET:  PUPGG::GROTH=44117::GROTH |
| Princeton, NJ 08544        | Internet:     groth@pupgg.princeton.edu |
\----------------------------------------------------------------------/