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    User name paschke

    Log entry time 14:19:26 on August 8,2003

    Entry number 109343

    keyword=parity DAQ: lockfile trick


    For reasons not worth discussing here, it is bad to run multiple runcontrol sessions
    for the Parity DAQ. This problem came up often, so Bryan fixed it real good: a
    lockfile prevents the opening of a new runcontrol session when one is already
    functioning.

    Apparently the last runcontrol session had died without properly cleaning up, so
    the lockfile was not deleted. When restarting, I received a
    "runcontrol already running" error. To restart the parity DAQ, it was necessary to:

    > kcoda

    followed by:

    > rm /adaqfs/halla/apar/coda/coda.lock

    to delete the lockfile. Then starting up rcServer and runcontrol like usual works fine.