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Redundant IOC improvements by LANL. Goal: Rather than 2 IOCs talking on the same bus, as at DESY. We want to command redundant hardware as part of our new master timer system. Improvements that may be useful for everyone: Added support for syncing field with SPC_DBADDR (waveform records)

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redundant ioc improvements by lanl
Redundant IOC improvements by LANL

Goal: Rather than 2 IOCs talking on the same bus, as at DESY. We want to command redundant hardware as part of our new master timer system.

Improvements that may be useful for everyone:

  • Added support for syncing field with SPC_DBADDR (waveform records)
    • Modified the Continuous Control Executive (CCEXEC) to support larger fields.
  • Made it possible to specify which records should be synced
    • Configurable via info nodes.
    • Modified e2db so that CapFast can be used to configure info nodes.
redundant hardware specific improvements
Redundant hardware specific improvements
  • Added an option to only pause the channel access server instead of the entire IOC.
  • Call post_event on the slave when the database becomes synced with the master (CCEXEC_SLV_INSYNC state) so that passive records can be made to process on the slave.
    • Uses event-driven fanout records.
    • Can control the processing order.
    • Particularly useful for commands.