RAL Tier1 weekly operations castor 04/05/2015

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List of CASTOR meetings

Operations News

  • ATLAS draining very nearly complete.
  • Upgrade of CASTOR DBs to Oracle version DB 11.2.04 complete.
  • SL6 disk server config is production ready, but will not be deployed until DB 11.2.0.4 upgrade is done.
  • 2 SL6 tape servers now running in production.
  • Testing CASTOR rebalancer on preproduction.
  • A potential fix for the CMS xroot access failures has been implemented. This will not fix the slow file open times, but will stop the intermittent job failures.

Operations Problems

  • GDSS757 cmsDisk / 763 atlasStripInput - new motherboards, fabric acceptance test complete, ready for deployment.
  • Elastic tape data corruption - CASTOR team assisting with extraction of data for review
  • Seeing a high volume of SRM DB file dup errors - produced a template for a separated test which will avoid calling on minor versions on this.
  • A higher number of checksum errors (Alice) investigation ongoing
  • OLDER>>>>
  • Deadlocks on atlas stager DB (post 2.1.14-15) - not serious but investigation ongoing
  • Issue with missing files in LHCb – race condition reported to CERN
  • Atlas are putting files (sonar.test files) into un-routable paths - this looks like an issue with the space token used. Brian / Rob actions below.
  • There is a problem with latest gfal libraries - not a new problem but Atlas are starting to exercise functionality and identifying these issues
  • storageD retrieval from castor problems - investigation ongoing
  • castor functional test on lcgccvm02 causing problems - Gareth reviewing.


Blocking Issues

  • grid ftp bug in SL6 - stops any globus copy if a client is using a particular library. This is a show stopper for SL6 on disk server.


Planned, Scheduled and Cancelled Interventions

Advanced Planning

Tasks

  • Bruno working on SL6 disk servers
  • Provide new VM? to provide castor client functionality to query the backup DBs
  • Plan to ensure PreProd represents production in terms of hardware generation are underway
  • Switch from admin machines: lcgccvm02 to lcgcadm05
  • Correct partitioning alignment issue (3rd CASTOR partition) on new castor disk servers
  • Intervention to upgrade CASTOR DBs to Oracle 11.2.0.4

Interventions

Staffing

  • Castor on Call person next week
    • Chris
  • Staff absence/out of the office:
    • n/a

Actions

  • Rob - revisit deployment plans (esp people in office towards the end of March)
  • Rob - change checksum validator so it maintains case when displaying
  • Bruno to document processes to control services previously controlled by puppet
  • Gareth to arrange meeting castor/fab/production to discuss the decommissioning procedures
  • Gareth to investigate providing checks for /etc/noquatto on production nodes & checks for fetch-crl

Completed Actions

  • Brian - On Wed, tell Tim if he can start repacking mctape (Done)
  • Rob - talk with Shaun to see if its possible to reject anything that does not have a spacetoken (answer: this is not a good idea)
  • Brian - to discuss unroutable files / spacetokens at at DDM meeting on Tuesday (Done)
  • Rob to pick up DB cleanup change control (Done)
  • Chris/Rob to arrange a meeting to discuss CMS performance/xroot issues (is performance appropriate, if not plan to resolve) - inc. Shaun, Rob, Brian, Gareth (Potential fix implemented)
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