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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.
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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'' .
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This will probably not succeed. You will probably have to eject
the tape manually.
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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
and gains.
Written: 03-JUL-1997 by Roy Bossingham
Last Modified:
Page maintenance:
Roy Bossingham, LBNL
RRBossingham@lbl.gov