Difference between revisions of "EPICS archiving with MYA"
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* So far requested MYA archiving for some BCAL temperature, BCAM VME fan-tray parameters and FCAL dark room parameters: | * So far requested MYA archiving for some BCAL temperature, BCAM VME fan-tray parameters and FCAL dark room parameters: | ||
** The corresponding MYA groups so far are <i>HD_BCAL_TEMPS</i>,<i>HD_FCAL_ROOM</i>, <i>HD_VME</i> . | ** The corresponding MYA groups so far are <i>HD_BCAL_TEMPS</i>,<i>HD_FCAL_ROOM</i>, <i>HD_VME</i> . | ||
| + | ** I keep track of what is in each group in text file in SVN at: https://halldsvn.jlab.org/repos/trunk/controls/epics/app/archiving/ | ||
** More groups and PVs will be added in time. | ** More groups and PVs will be added in time. | ||
Revision as of 09:07, 29 May 2014
- Accelerator division at Jefferson Lab developed and currently maintains a MySQL-based EPICS archiving system called MYA. Hall D controls group will use this system to archive the EPICS variables.
- The accelerator division is also developing a Backup/Restore framework based on the MYA archiver which should allow us to tag sets of values for Hall D EPICS in MYA PVs and restore these values from the archived values.
- Not ready for us to use.
- MYA has a well documented C++ API that should allow the offline analysis software to retrieve the archive values and store them into a conditions database.
- There are command-line tools, like myget, that allow to work with MYA archiver, for instance to get values for particular variable in a specific time-span.
- Currently installed on gluon01 and ops-machines only. It will be available on the gluon-cluster.
- MYA also has a graphical tool MyaViewer to display variable being archived in MYA.
- Currently no interface is available between MYA and CSS BOY, but we can pop up MyaViewer.
- Currently installed on gluon01 and ops-machines (like opsl00) only. It will be available on the gluon-cluster.
- Figure 1 shows a screenshot of MyaViewer with some BCAL temperature history plotted.
- So far requested MYA archiving for some BCAL temperature, BCAM VME fan-tray parameters and FCAL dark room parameters:
- The corresponding MYA groups so far are HD_BCAL_TEMPS,HD_FCAL_ROOM, HD_VME .
- I keep track of what is in each group in text file in SVN at: https://halldsvn.jlab.org/repos/trunk/controls/epics/app/archiving/
- More groups and PVs will be added in time.
- To give the accelerator division capability to archive Hall D variable we gave them access to our controls network.
- They can also modify our PVs (most likely inadvertently)
- We need to implement ChannelAccess Security for Hall D PVs and IOCs to control what accelerator can modify.
- protection is based on hostname and username that attempts to read or write EPICS PVs via ChannelAccess.
