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Exabyte Tape Drive is Hung
PROBLEM: The tape drive hangs during a transaction with MiniDAQ.
SYMPTOM: During a run--usually a long, overnight cosmic run writing
zero-suppressed data infrequently--data-taking stops spontaneously;
the yellow ``write'' light on the tape drive is stuck on.
REMEDY: There is probably no quick, graceful fix for this.
End the run; since MiniDAQ thinks that it is in the middle of writing
to the tape (which it is), it cannot be ended by requesting
an ``End'' through Run Control. Instead, you can try an ``abort'' from
Run Control, or go the MiniDAQ desktop, select the Run_w_eye window
and click on ``Force End'' .
This will probably not succeed. You will probably have to eject
the tape manually.
MiniDAQ will probably still be hung, still trying to write to the tape.
Bite the bullet, reboot MiniDAQ (reset button on left-most processor
in MiniDAQ crate), then do Pedestal and Padpulser runs to reload pedestals
Written: 03-JUL-1997 by Roy Bossingham
Roy Bossingham, LBNL