MDM Trouble Report for 2005 Feb 26

Telescope: 2.4m
Observer(s): McGreer (Columbia)
Instrument: TIFKAM

Problem(s) Encountered:
I wrote a Prospero script that took two zero second exposures
and stored them in a memory buffer.  It appeared the second
exposure was taken, but the script hung and the file was
never written to disk.  After several minutes I used Ctrl-C.
Then no Prospero commands would work.

First, I tried to restart Prospero.  It failed to connect to
the WC.  I exited and restarted the wc program, but that did
not help.  I noticed that the IC screen had several lines of
error messages about bad disk sectors.

I then rebooted the WC and IC.  At first the WC complained
about invalid messages from ariel, and also failed to connect
to the TCS.  I eventually realized I had not restarted
everything in the proper order (xtcs launched before wc started,
caliban also needed to be restarted), once I got the that
right I was able to restore working order by issuing the
commands '>ic req initdisk' and 'tcinit' to the WC.

There seem to be no further problems, I tried taking exposures
and the files wrote to disk.  The WC monitor still shows
'-UPSYNC' and '-DNSYNC', but perhaps that is expected.

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Submitted on 2005 Feb 26 [5:52:33]