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- runSLACPVCrawler.csh, runLCLSPVCrawlerLx.bash and runFACETPVCrawlerLx.bash set up for and run the IRMIS pv crawler multiple times to hit all the boot structures and crawl groups. Environment variables set in pvCrawlerSetup.bash, pvCrawlerSetup-facet.bash and pvCrawlerSetup.csh, point the crawler to IOC boot directories, log directories, etc. Throughout operation, errors and warnings are written to log files.
- The IOC table in the IRMIS schema contains the master list of IOCs. The SYSTEM column designates which crawler group the IOC belongs to.
- An IOC will be hit by the pv crawler if its ACTIVE column is 1 in the IOC table: ACTIVE is set to 0 and 1 by the crawler scripts, depending on SYSTEM, to control what is crawled. i.e. LCLS IOCs are set to active by the LCLS crawler job. NLCTA IOCs are set to active by the CD crawler job.
- An IOC will not be crawled unless if it has been rebooted since the last crawer run: if its LCLS/FACET STARTTOD or CD TIMEOF BOOT (boot time) PV has changed since the last crawl. Otherwise it will be skipped.
- Crawler results will not be saved to the DB unless if at least one file boot file has changed, as determined by mod date or and file size size has changed.
- Crawling specific files can be triggered by changing the mod date (e.g. touch).
- In the pv_crawler.pl script, there’s a mechanism for forcing the crawling of subsets of IOCs (see the pv_crawler.pl code for details)
- IOCs without a STARTTOD/TIMEOFBOOT PV will be crawled every time. (altho PV data is only written when IOC .db files have changed)
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