Experimental Physics and
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On Wed, 2008-10-15 at 05:23 +0200, Thomas Birke wrote:The current version of the ChannelArchiver also installs a tool named "ArchiveIndexTool". It has a "-reindex" option that will create a new index from an existing one. Maybe that'll help a bit... I forgot to mention, that we are creating weekly archives of several different sets of PVs. The index-files of these archives definitely never reach the 2GB limit (not even 100MB), and every monday at 2am we start a new one. These separate archives/index-files are then combined into a "master_index" using the ArchiveIndexTool as well. To do this, we create an xml-file (e.g. indexconfig.xml) containing a list of index-files to combine into the so-called master_index. This master_index is updated regularly and in our case after ~1-2 years usually reaches the 2GB limit. All this is done automatically by scripts run by cron. I just recreated our master_index (although it was not yet necessary) and it shrunk from ~1.5GB to ~1GB. It contains about 2.5 years of data from ~32000 PVs summing up to ~520GB of data. There are sample scripts bundled with the ChannelArchiver (directory ExampleSetup) that do the job or may serve as a good starting point. Thomas
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ANJ, 02 Sep 2010 |
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