[Halld-offline] Transition of the /cache filesystem to read-only today

[Alexander Austregesilo]

Dear Colleagues,

During the ongoing Scientific Computing maintenance day today, the 
/cache file system will become a read-only filesystem [1]. This has the 
advantage that the filesystem will become an exact representation of the 
tape library, but may interfere with your swif2 workflows if you are 
trying to save the output to /cache.

To help with the transition, we adapted our launch scripts [2] in the 
hd_utilities repository to consistently use the swif2 "reaping" 
mechanism [3]. All output files are no longer copied by the script it 
self, but moved to their final location by swif2 independent of whether 
it is tape or a writable filesystem. Please update your scripts today. 
In principle, no other modification will be necessary. The 
CACHE_PIN_DAYS variable in the configuration files will become obsolete.

Please let me know if you have any questions or encounter any issues.

Best regards,

Alex

--

[1] 
https://jlab.servicenowservices.com/scicomp?id=kb_article_view&sysparm_article=KB0015468

[2] https://github.com/JeffersonLab/hd_utilities/tree/master/launch_scripts

[3] https://scicomp.jlab.org/cli/output.html

-- 
Alexander Austregesilo

Staff Scientist - Experimental Nuclear Physics
Thomas Jefferson National Accelerator Facility
Newport News, VA
aaustreg at jlab.org
(757) 269-6982