🚀 go-pugleaf

In <1993Jan11.184619.18179@ulysses.att.com> jdt@ulysses.att.com (Jonathan D. Trudel[ftd]) writes:
| First of all, is it necessary to use hardware links in /dev for newly
| attached disk drives?  Coming from a Sun environment, I'm more used to 
| mounting the actual devices as file systems instead of things like
| /dev/disk1.  I like to see what hardware is being used where, and since 
| you're really using the same major and minor device numbers of, say
| /dev/dsk/jag0d1s7, what's the harm?

You can use the full device name.  You must have added the disk with
the Add_disk script.  Also see the disk tool in system manager (top
item on the toolchest at top left).

| Secondly, I've been told that the system really doesn't care what SCSI
| device numbers you use on the SCSI chaains, so long as the id isn't 0.
| True?  Does the system just recognize what a device is by probing the
| bus or something?

Yes.  Of course, it is helpful if /etc/fstab matches ;)

| Can I get a machine to run its administrative tools with the 
| display on another (part of the faq, perhaps?)?  On my SGI server,
| it complains that it "can't access a needed shared library".
| How do I set it up right?

You have to install the server version of libgl_s; it *should* have
been installed automatically as part of eoe1.sw.unix.  Perhaps somebody
removed it because they thought they didn't need it?  Other than gettig
that installed, setting the DISPLAY environment variable to point to
some other SGI system should do the job.

| Lastly, how do I create tape drives on a SCSI bus?  I would like to
| set up an exabyte 8500C on the system, but how do I go about using the 
| compressed and non-compressed modes?  I know you use different minor
| numbers on the device to get the different modes, but how do I space
| the numbers to get it right?  On a Sun, for example, the base number is
| the tape drive with rewind, and the base number+4 is no rewind, and so on.
| Any suggestions would be appreciated.

You'll also have to edit /usr/sysgen/master.d/tpsc (assuming this is on
integral SCSI; jagtape otherwise), in a manner similar to st_tape.c on
Sun.  Several people corresponded with me on this recently and got it
to work, perhaps one of them will post their actual entry.  You may
have to post with 8500C in the subject for them to notice.

Also see /dev/MAKEDEV for existing minor number use.
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com