Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!ubc-cs!moose.cs.ubc.ca!majka
From: majka@moose.cs.ubc.ca (Marc Majka)
Newsgroups: comp.sys.apollo
Subject: Re: Registry unavailable on DN 10000
Message-ID: <4748@ubc-cs.UUCP>
Date: 17 Aug 89 00:20:12 GMT
References: <2545@wasatch.utah.edu>
Sender: news@cs.ubc.ca
Reply-To: majka@cs.ubc.ca (Marc Majka)
Organization: UBC Department of Computer Science, Vancouver, B.C., Canada
Lines: 37
Keywords: registry 10.1 rgyd accounts DN10000 NCS

Mike Zeleznik writes:
>We have a 10000 and a 3500 on an ethernet, running one master and one
>slave registry (10.1 on both machines).
>
>** A number of times each day, when trying to login in to the 10K, the
>system complains that the network registry is unavailable, and must use the
>local one.  If we try a few times, it will eventually suceed.  This happens
>if the 10K is running the master or the slave.

We currently have a DN10000, two 3500s, and a 4000.  The DN10000 has the
master registry.  We have the same kind of trouble you describe, although
things lock up about once a day for us.  I had a slave registry running on
one of the 3500s, and could cause the problem at will by just trying to look
at the slave registry from the 10000.  It seems to completely freeze NCS:
the 3500 loses ALL communications with the outside world.  Going down to a
phase 2 shell (dm "ex" command), and restarting (")go") does not fix the
problem.  Only a complete shutdown and reboot gets things back to normal.
In dispair, I killed off the slave registry, and stopped running the location
broker daemons everywhere except on the 10000.  The 3500s *still* freeze up
daily.  I reported my troubles to the hot line, but to no avail.

I suspect that the problem is much deeper than the registries.  I hope
it is a bug in NCS (Network Crash System :-) on the DN10000, as I am about to
install a network of 68 3500s and 3000s, and I will go insane if the same thing
hits me there.  SR10.1.p fixed a *lot* of bugs which were in 10.0.p.  I suspect
that there are still a bunch of them in 10.1.

I understand that 10.2 will have a notion of "domains" which will allow
different master registries on a network to co-exist.  Has anyone seen it
running yet?  I would like to know how and if it works.  We live on an
extended ethernet which connects 3 universities and several research
institutions.  Having a single master registry on this network is an
administrative impossibility.

---
Marc Majka
Computer Science System Manager, University of British Columbia