Experimental Physics and
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At BESSY, we use two of the already mentioned ways to save and restore specific PVs on demand.Dear EPICS folk, The LCLS project at SLAC is seeking a good save and restore tool (something along the lines of BURT or SCORE) to manage saving and restoring specified PVs on demand. Does anyone have any recommendations or experiences to share with us? We appreciate your input. The warm-reboot save-and-restore is realized with the IOC-based version of autosave as it comes with the synApps package. Everything else is done with a powerful Tcl/Tk-frontend to "burt" and some sdds-tools (the latest version doesn't even use "burt" anymore). It is an often-used program to save and restore specific settings of parts of or the whole machine (called snapshots) together with some meta-information * time and date of the snapshot * a comment provided by the user * the list of areas saved in this snapshot * some additional tags (Multi- or Single-Bunch, Energy...) The program is based on a script we got from JLab (when it still was CEBAF) written by Bruce Dunham back in '95, but it was basically rewritten at least once over the last 10 years It also provides additional features like * comparing stored snapshots in different ways o compare the contents of two snapshots o compare settings and readbacks within one snapshot o compare a snapshot with the current values read from the machine * filter list of stored snapshots by comment/tags/date * view the contents of a snapshot o if requested, filter signals by pattern * restore parts of or a whole snapshot o if necessary perform special operations before or after restoring + e.g. disable/enable some processing or request + request explicit confirmation before overwriting certain values The only thing, that's left from the CEBAF version is the fact, that it is still Tcl/Tk. I also like the idea of having an archiver save a set of values on trigger (it's not even that new - wasn't there something called save-set-archiver several years ago?). But I never had the time to work on this, and people here at BESSY actually got used to our SaveRestore.tcl. Thomas Birke BESSY GmbH Albert-Einstein-Str. 15, D-12489 BERLIN BESSY GmbH - Mitglied der Leibniz Gemeinschaft Vorsitzender des Aufsichtsrates: Prof. Dr. Dr. h.c. mult Joachim Treusch Geschäftsführer: Prof. Dr. Dr. h.c. Wolfgang Eberhardt, Prof. Dr. Eberhard Jaeschke Sitz Berlin, AG Charlottenburg, HRB 14635
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ANJ, 10 Nov 2011 |
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