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<== Date ==> <== Thread ==>

Subject: Re: autosave/restore software fails
From: Tim Mooney <mooney@aps.anl.gov>
To: tech-talk@aps.anl.gov, beamline_controls@aps.anl.gov
Date: Fri, 11 Jul 2003 15:28:57 -0500
Dear folks,

I've posted a new 3.13-compatible version of autoSaveRestore on our web page.

www.aps.anl.gov/xfd/SoftDist/swBCDA/autoSaveRestore_3.13.5_v2.9a.tar.gz

www.aps.anl.gov/xfd/SoftDist/swBCDA/autoSaveRestore_3.13.5_v2.9a.README

This version fixes two captured-semaphore problems, and has other minor
improvements, but it doesn't fix all the problems unearthed in the recent
site-wide power failure experienced at APS.  Not all of the performance
data is in hand, but anyway the systems that fared best were those in which
autosave was writing to a UPS-protected file server.  I don't know of any
power-failure-related failures for these systems.  For non-UPS-protected
systems, failure rates as high as 80% were reported.

-- 
Tim Mooney (mooney@aps.anl.gov; 630-252-5417)
Advanced Photon Source
APS Operations Division
Beamline Controls & Data Acquisition Group

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