Difference between revisions of "RAL Tier1 weekly operations castor 21/09/2018"

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== Operation problems ==
 
== Operation problems ==
  
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Issue with CMS migrations: CASTOR marked all cmsr18rec tapes available are in a BUSY state, but not mounted. After Tim
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Lost snoplus files that failed to migrate to tape [[https://ggus.eu/index.php?mode=ticket_info&ticket_id=137294][GGUS137294]]. Disk server decommissioning procedure has been modified to avoid this happening in the future.
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cleared the BUSY state, migrations started again. Need to find why CASTOR marked the tapes as BUSY.
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"Probably need a Nagios check for tapes that are BUSY and are not mounted.  Won’t be easy as there is a 5 min (max) window where the tape is marked BUSY, and the tapegatewayd has not triggered to get the tape mounted" (ticket on the support queue)
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LHCb issue again with failed downloads from CASTOR to WN [https://ggus.eu/index.php?mode=ticket_info&ticket_id=137136 GGUS137136]
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== Operation news ==
 
== Operation news ==

Revision as of 08:35, 21 September 2018

Standing agenda

1. Problems encountered this week

2. Upgrades/improvements made this week

3. What are we planning to do next week?

4. Long-term project updates (if not already covered) 

  1. SL5 elimination from CIP and tape verification server
  2. CASTOR stress test improvement
  3. Generic CASTOR headnode setup
  4. Aquilonised headnodes

5. Special topics

6. Actions

7. Review Fabric tasks 

  1.   Link

8. AoTechnicalB

9. Availability for next week

10. On-Call

11. AoOtherB

Operation problems

Lost snoplus files that failed to migrate to tape [[1][GGUS137294]]. Disk server decommissioning procedure has been modified to avoid this happening in the future.

Operation news

 * Completed Oracle patching of preprod and vcert

 * Preprod instance is back up and running with the new host names

 * OPS tests are coming in for the srm-wlcgtape endpoint of the new CASTOR instance

Plans for next few weeks

  * Push gsi authentication for xrootd in production

  * Decommission gdss747

Long-term projects

gsi authentication for xrootd: 1) Return preprod to a working state (done) 2) Ask Raja and Tim to test the gsi config on preprod 3) Perform a stress test

New CASTOR WLCGTape instance: Upgraded stagers and ns nodes to 2.1.17-35. Need to upgrade tape servers to make migrations/recalls to work. Because of CASTOR version depedencies, tape servers cannot all be upgraded and allocated to the new instance at the same time. Rob suggested we do 5 tape servers for every VO migration to the new CASTOR instance. Also need to negotiate with TimA how many tape drives ATLAS would be happy to use for the tape "carouselle" test.

Things need doing: log rotation(RT212634), xrootd for ALICE

Actions

GP to add ldif entry for the new srm-wlcgtape endpoint

JK to investigate why ralreplicas fails and submit a "bug" report

RA/BD: Run GFAL unit tests against CASTOR. Get them here: https://gitlab.cern.ch/dmc/gfal2/tree/develop/test/

GP/RA to write a Nagios test to check for large number of requests on the NewRequests DB table that remain for a long time - the check will run every xxx min (to be aggreed with Production) and issue an alarm if the number exceeds 1,000 for an extended period of time (15 min)

Staffing

RA on call

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