Message boards : ATLAS application : Potential disruption due to ATLAS database upgrade on 7 April
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David Cameron
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Message 44663 - Posted: 6 Apr 2021, 18:06:32 UTC

ATLAS tasks read information from databases while they are running, and one of these databases at CERN is being upgraded on 7 April and hence will be down for up to 8 hours (working hours in Europe). However there are replicas of this database in France in Canada and tasks should be able to fallback automatically to using those when the CERN database is down. So in theory there should be no disruption however access to the fallback databases may be slower due to the heavier load.
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Message 44665 - Posted: 6 Apr 2021, 19:28:35 UTC - in response to Message 44663.  

ATLAS tasks read information from databases while they are running, and one of these databases at CERN is being upgraded on 7 April and hence will be down for up to 8 hours (working hours in Europe). However there are replicas of this database in France in Canada and tasks should be able to fallback automatically to using those when the CERN database is down. So in theory there should be no disruption however access to the fallback databases may be slower due to the heavier load.



https://lhcathome.cern.ch/lhcathome/result.php?resultid=308158576

Was this task affected by your database upgrade?
Created 31 Mar 2021, 15:35:57 UTC
Sent 31 Mar 2021, 17:22:17 UTC

<core_client_version>7.16.11</core_client_version>
<![CDATA[
<message>
WU download error: couldn't get input files:
<file_xfer_error>
<file_name>3UqNDmXXmlyn9Rq4apoT9bVoABFKDmABFKDme1PQDmABFKDmICKo2n_EVNT.16514008._000572.pool.root.1</file_name>
<error_code>-224 (permanent HTTP error)</error_code>
<error_message>permanent HTTP error</error_message>
</file_xfer_error>
</message>
]]>
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Message 44765 - Posted: 18 Apr 2021, 5:19:14 UTC - in response to Message 44663.  

Just out of curiosity what is the size of this database? database and all working files...?
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Message 44836 - Posted: 28 Apr 2021, 3:00:50 UTC - in response to Message 44765.  

Just out of curiosity what is the size of this database? database and all working files...?

I would also be interested to hear about this information

Have A Crunching Good day
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Message boards : ATLAS application : Potential disruption due to ATLAS database upgrade on 7 April


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