Some systems are experiencing issues

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Please find status information about critical T2B cluster components, incidents and planned maintenance.

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Stickied Incidents

Monday 12th August 2024

Mass Storage (/pnfs) Some issues with mass storage /pnfs [Rucio & Crab]

Hello,

Several users have reported that:

1/ Rucio does not allow copies to our RSE with error: Details: RSE excluded; not available for writing.

2/ Crab also complains that tasks can't be started because you are not allowed to write on your home directory on our site: Checkwrite Result: Unable to check write permission in /store/user/rougny on site T2_BE_IIHE

We are investigating both issues.

On the other hand, standard grid commands on your files (eg gfal-copy) seem to work without any issues.

Cheers, Romain

  • Dear all,

    After consulting with central CMS IT services, it seems that they have resolved the problem from their end. We also received confirmation from users that the rucio and crab indeed work as expected again.

    Kind regards,

    Olivier For the T2B Admin team

    • Past Incidents

    Saturday 13th April 2024

    No incidents reported

    Friday 12th April 2024

    No incidents reported

    Thursday 11th April 2024

    No incidents reported

    Wednesday 10th April 2024

    No incidents reported

    Tuesday 9th April 2024

    Batch System Batch System Reboot

    Hello,

    In order to prepare for the switch from Grid certificates to Tokens, the batch system has been upgraded to a new minor version. This has led to most of the worker nodes to drain in order the restart the condor service.

    This explains why most your the jobs are still queued. They will start again as soon as more and more worker nodes have the new condor version.

    Cheers, The T2B IT Team

  • Hello,

    The batch system has finished the upgrade draining, now all worker nodes are back online.

    On another note, you might have noticed schedd03 not working (happened on the 3rd, the 5th and this morning), that is a consequence of /user issues. On those cases, running jobs might be requeued and waiting to run again. This should be explicit in the job log file.

    We are continuing our investigation on the issue to find a way to prevent that, however finding exactly what causes the load on our /user storage is not easy.

    One point that might help schedd03 is to make sure 'should_transfer_files = NO' in your sub file, unless really required. If you set it to YES, then ALL transfers have to be done by schedd03, potentially making it a bottleneck if many of your jobs are finishing at the same time. Since /user and /pnfs are available on all worker nodes, you can just copy what you want back to either at the end of your job, rather than asking condor to do it.

    Do not hesitate to contact us if you have questions or want confirmation about your workflow on the batch system !

    Cheers The T2B IT Team

    • Monday 8th April 2024

    No incidents reported

    Sunday 7th April 2024

    No incidents reported