Release Notes for NorduGrid ARC 7.1.1 03.10.2025

This is a bugfix release that addresses 4 bugs discovered in 7.1.0:

  • arccp segfault (Bug 4271)

  • Slurm 25 deprecation of options to the get-user-env was not fully fixed in 7.1.0 (get-user-env no longer supports any options at all) (Bug 4254)

  • a glob pattern mismatch in submit_common.sh caused jobs to be aborted early (Bug 4270)

  • A previous change to arc-job-cgroup causes get_cgroup_mount_root() to fail since the input arguments to fscanf() changed from 6 to 5 without changing the test value in the code from 6 to 5.

Note that GFAL2 is no longer supported in EL10. We therefore do not provide packages for GFAL for EL10 derivatives.

The following Bugzilla tickets have been adressed or solved

  • 4271 arccp segfaults after upgrade to 7.1.0

  • 4254 Job submission to slurm 25 is failing

  • 4270 submit_common.sh: move_files_to_node and move_files_to_frontend glob patterns fail to match .* in Bash

  • 4210 Tidy up arc-job-cgroup.c

Documentation

The ARC 7 documentation can be found at https://www.nordugrid.org/arc/arc7

If you miss something or have questions, please contact us!

Installing ARC 7

We recommend to install ARC release using the Nordugrid repository.

There is also a nice ARC tutorial which you can follow if you are new to ARC: https://www.nordugrid.org/arc/arc7/admins/tutorial/tutorial.html

  • We provide binary builds for all supported versions of Debian, Ubuntu, Fedora, Rocky (compatible with AlmaLinux), and CentOS Stream.

Contributing

You can submit pull requests to our public repo at https://github.com/nordugrid/arc which mirrors our Gitlab repo https://source.coderefinery.org/nordugrid/arc.

The pull requests will be automatically copied over to our Gitlab repo where they will be merged into the source-code if accepted.

Getting in touch

If you need help with the configuration file or have any other questions related to ARC, please contact us via * Email: nordugrid-discuss@nordugrid.org or wlcg-arc-ce-discuss@cern.ch * We have moved to Matrix for ARC support - you can always reach us there: https://matrix.to/#/#arc_support:matrix.org

Future support of ARC 6-series

Now that ARC 7.0.0 is released, we expect one final ARC 6 release, but after that we will only provide security updates of ARC 6. In particular: 1) No new feature development is planned or going on for ARC6 and no bug-fixing development

will happen on ARC6 code base in the future except for security issues.

  1. Security fixes for ARC6 will be provided till end of March 2026.

  2. Production Sites already running ARC 6 will be able to get deployment and configuration troubleshooting help via GGUS Helpdesk till end March 2027. This we call “operational site support”.

  3. In EPEL ARC packages have their major release number as part of the package name, arc6 and arc7 packages can not be confused.

  4. In the Nordugrid repository, you have to specifically enable the ARC 7 repo to get the ARC 7 update. See: https://www.nordugrid.org/arc/arc7/common/repos/repository.html

Knows issues

  • GFAL2 not supported in EL10