[2068] in Hotline Meeting
I've put eos2 back on-line.
daemon@ATHENA.MIT.EDU (Bill Cattey)
Tue Oct 16 01:27:33 1990
Date: Tue, 16 Oct 1990 01:27:06 -0400 (EDT)
From: Bill Cattey <wdc@ATHENA.MIT.EDU>
To: brlewis@ATHENA.MIT.EDU, dot@ATHENA.MIT.EDU, lavin@ATHENA.MIT.EDU
Cc: hotline@ATHENA.MIT.EDU, nschmidt@ATHENA.MIT.EDU
I was beginning to think it was sloppy to have a hot spare that was not "hot".
So I finally got around to putting eos2 back on-line.
For those joining the show late, some background: there are two
identical IBM RT gigaboxes in the E40 machine room. One, EOS provides
turnin service to half a dozen courses. The other, EOS2 is a "hot
spare" that we put on-line if EOS dies. (We do this by changing the
name of EOS2 to EOS, and by swapping in the appropriate srvtab.)
Well, last month the original EOS went down, and was swapped with EOS2.
Field service repaired the original EOS. I renamed it to EOS2 and put
it back on-line tonight.
I have also swapped the labels around, so that the machine that is
acting as EOS, is now properly labeled.
I have also done a disk-to-disk copy from eos to eos2 so that our hot
spare truely is hot. (Those present at the fateful day we swapped in
eos2 will remember that I screwed up this disk-to-disk copy, and we had
to move drives from one box to another. I found out what I did wrong,
and this time I may have actually gotten it right.)
To summarize: The gigabox on the left formerly labeled eos2 was swapped
in last month as eos. It is now properly labeled. The gigabox on the
right, formerly labeled eos is now properly labeled, and is on-line as
the eos2 hot spare.
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Meanwhile Bruce and I are working on software to do automatic
multi-server operation, because of what a confusing mess it has been
with this hot spare deal...
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Share and enjoy,
Bill Cattey
Architect of the Tower of Babble in a previous life...
