devel May 2025

devel@lists.centos.org

15 participants
15 discussions

ksplice and CentOS
by Karanbir Singh 25 Sep '25

25 Sep '25

hi guys, lots of people on this list are keen on contributing to the CentOS effort - and one place where we could, as a group of people, make a massive difference is being able to deliver a ksplice upgrade model. A couple of people have started in silo's to try and get something together but I feel it might be a good time to try and see if we can do somethng as a group. Do we have people on the list who find the idea of rebootless kernel upgrades interesting ? Is there some desire to try and make that happen within the CentOS Ecosystem ? - KB

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anaconda dependency calculation?
by Nicholas Byrne 04 Aug '25

04 Aug '25

Hi all, I'm trying to find a tool that calculates all dependencies for a specific package or group of packages for use with CentOS 5 (beta) with the intention of putting together a custom single CD build of CentOS 5. With CentOS 4 i used a python script that used the hdrlist module to find all dependencies which borrowed code from a number of sources. I've looked at yumdownloader and how it checks dependencies (using the --resolve option) but if i pass it the list of packages defined in say the Base and the Core yum groups which generally form an absolute minimal install i end up with about 200 packages. If i do a custom install (using beta 1 disks) and deselect everything i end up with over 300 packages. So i'm guessing anaconda calculates dependencies in a slightly different way, can anyone point me to files/code where i should be looking to find out? Thanks very much in advance for help Nick This e-mail is the property of Quadriga Worldwide Ltd, intended for the addressee only and confidential. Any dissemination, copying or distribution of this message or any attachments is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. Messages sent to and from Quadriga may be monitored. Quadriga cannot guarantee any message delivery method is secure or error-free. Information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. We do not accept responsibility for any errors or omissions in this message and/or attachment that arise as a result of transmission. You should carry out your own virus checks before opening any attachment. Any views or opinions presented are solely those of the author and do not necessarily represent those of Quadriga.

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TOMOYO in Red Hat kernels
by Tetsuo Handa 18 Jun '25

18 Jun '25

Hello. I hope that some of Red Hat kernel team members are subscribed to this list. I want to use TOMOYO in RHEL kernels. In accordance with Fedora -> CentOS Stream -> RHEL flow, as a first step, I opened https://bugzilla.redhat.com/show_bug.cgi?id=2303689 and am waiting for response. Regards.

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make dist-all-rpms fails with test_progs-no_alu32-extras Error
by Sebastian Hetze 18 Jun '25

18 Jun '25

Hi * I recently tried to compile a custom centos-stream-9 automotive SIG kernel and failed. Now I see the very same problem is present in the mainline centos-stream-9 kernel. When I clone the sources from https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9 on a freshly installed centos-stream-9 host, the make dist-all-rpms target fails with make[3]: rsync: Argument list too long make[3]: *** [Makefile:768: test_progs-no_alu32-extras] Error 127 This is certainly not a problem with rsync and the ulimits are definitely sufficient to deal with this ~2000 char argument list. So what is going on here? This rsync call appears to come from the tools/testing/selftests/bpf/Makefile. The problem persists if I BUILDOPTS="-selftests" and I understand bpf to be a SKIP_TARGET by default, anyway. Does anyone have a hint? What is missing or what am I missing? Beste Grüße Sebastian Hetze -- Principal Software Engineer Red Hat GmbH. Niederlassung Berlin Leipziger Platz 16, 10117 Berlin Mobil: +49 173 8914205 E-Mail: she(a)redhat.com Registered seat: Werner von Siemens Ring 14, D-85630 Grasbrunn, Germany Commercial register: Amtsgericht Muenchen/Munich, HRB 153243,Managing Directors: Ryan Barnhart, Charles Cachera, Michael O'Neill, Amy Ross

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ISA SIG status and ways to get involved?
by Neil Hanlon 06 Jun '25

06 Jun '25

Hi all, I’ve been trying to get in touch with the ISA SIG but haven’t been able to find much current information, particularly around where conversations are happening these days. I checked the ISA SIG documentation but couldn’t locate a Matrix channel matching the one described, and I haven’t seen any recent meetings in #centos-meeting on Libera or similar. I also noticed a few broken links on various SIG pages, and I know the SIG's original mission had finished, so I figured the best path was to ask here directly. Given the renewed focus on RISC-V, I would love to get involved or help out if there’s anything currently in motion. We (Rocky) are keenly interested in the initiatives mentioned in the recent blog post. Best, Neil Hanlon

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SIGs build pipeline discussion about a change on cbs.centos.org (please read and comment)
by Fabian Arrotin 27 May '25

27 May '25

For a long time, cbs.centos.org had a inherited structure for build tags, and relying on buildsys${version}-release tag. That permitted us to have top-level macros set in all buildroots, that could be changed if needed : some macros like "dist" "rhel" "centos" etc It was all working fine (and still does to some extent) but recently we got a request from Hyperscale SIG to override %distprefix for some of their buildtags (RFE ticket being https://pagure.io/centos-infra/issue/1673) We then found out that it wasn't working as the macros from top-level couldn't be modified (and distprefix evaluated correctly, as it's also evaluated through centos-release-release (see https://gitlab.com/redhat/centos-stream/rpms/centos-stream-release/-/blob/c…) So we thought about just bumping buildsys-macros pkg to just remove duplicates, and it worked on a staging test. The interesting part (where we need your input/feedback) : as CentOS Stream just defines (for 10 but same logic applies on 9) " dist as el10, that means that your builds , even if built against/for CentOS stream would end up with disttags being eventually .el10 instead of .el10s (same thing for stream 9 of course) While it shouldn't be a problem for people only building for Stream, it would suddenly be an eventual problem for people building from same sources, with same NVR, and in parallel for Stream and RHEL, as koji wouldn't allow same built NVR (with same dist tags) Options : #1 : still defining these in the buildsys-macros file : same as usual but it can be an opt-in situation for people wiling to use something like distprefix : we can then "block" buildsys-macros from being populated in buildroots (the approach we took for hyperscale request above) : "less" work from infra/releng perspective but just documentation for these "opt-in" requests #2 : removing all from buildsys-macros and then just defining dist macros as el{9,10}s on koji build tags for SIGs building for both (and so still continuing to build as they do, transparently) #3 : (to be tested and in fact just thinking about it when typing this email) : no change, and we can just , for SIGs willing to use that distprefix/distsuffix macro, just do this : %%distcore .el%{major} %%dist %%{!?distprefix0:%%{?distprefix}}%%{expand:%%{lua:for i=0,9999 do print("%%{?distprefix" .. i .."}") end}}%%{distcore}%%{?distsuffix}%%{?with_bootstrap:%{__bootstrap}} Now that I'm typing that, I think that option 3 is probably the less intrusive and can just be something that SIGs willing to use can just ask for ? Waiting on opinions/feedback -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | @arrfab[@fosstodon.org]

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Announcing EL10 buildroot support on cbs.centos.org
by Fabian Arrotin 27 May '25

27 May '25

Just to let you know that we recently got our first ticket asking for el10 buildroot support on cbs.centos.org (like we did for el9) and it's now available. It was confirmed to be working for Kmods SIG (https://pagure.io/centos-infra/issue/1669) Should you need/want to have it, feel free to ask through usual ticket tracker -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | @arrfab[@fosstodon.org]

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CentOS Stream MRs now get AI feedback from Log Detective
by Tomas Tomecek 27 May '25

27 May '25

We are thrilled to announce integration of AI feedback into CentOS Stream merge requests. Log Detective [1] [3] will now comment on merge requests for failed RPM builds, explaining the failure. We want to reduce your triage time, and allow for faster resolution of failed builds by eliminating the need for manual log examination. Please give 👍 to Log Detective’s comments if it is providing accurate information or 👎 if it is incorrect or too vague. The entire system is open source and we welcome your contributions. For more details please head over to the logdetective repository readme [2]. If you are curious how these comments will look like, thanks to Michal Hlavinka for being an early adopter, we can show you examples of both accurate and inaccurate comments: 1. good: https://gitlab.com/redhat/centos-stream/rpms/libtiff/-/merge_requests/26#no… 2. inaccurate: https://gitlab.com/redhat/centos-stream/rpms/libtiff/-/merge_requests/26#no… This system is actively developed and you can expect improvements in the coming weeks. In fact we already received a ton internally and are working through them. This integration was developed by the Log Detective team: Stephen Gallagher, Jakub Kadlcik, Maja Massarini, Jiri Podivin, Miroslav Suchy, Tomas Tomecek Shout out to our collaborators: Veronika Kabatova, Jiri Konecny, Jiri Kyjovsky, Pavel Raiskup Tomas, on behalf of the team [1] https://github.com/fedora-copr/logdetective [2] https://github.com/fedora-copr/logdetective?tab=readme-ov-file#contributing [3] https://logdetective.com/

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NFV SIG active?
by Michał Nasiadka 20 May '25

20 May '25

Hello, I’ve been looking for a contact to current maintainers of OVS/OVN packages. There hasn’t been any update since Feb and there are some important OVN bug fixes. I’m happy to contribute to the SIG - I just need somebody to show me the path :-) Michał Nasiadka mnasiadka(a)gmail.com

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Announcing kvm virt-host repo for CentOS Stream 10 ppc64le
by Fabian Arrotin 16 May '25

16 May '25

Hi all, As discussed recently in the CentOS Virt SIG list (https://lists.centos.org/hyperkitty/list/virt@lists.centos.org/thread/EPGFO…) , I'd like to officially announce that it's now possible to run kvm guests on top of CentOS Stream 10 ppc64le with the newly Virt SIG available repository (only covering ppc64le architecture, as qemu-kvm/libvirt and deps were available already for other architectures) Packages are available on https://mirror.stream.centos.org/SIGs/10-stream/virt/ppc64le/kvm-power/ For your convenience (common practice for stream users), corresponding centos-release package is available (only for ppc64le) so you can just issue these commands and you'll be able to then install what's needed : ``` dnf makecache ; dnf install centos-release-kvm-power ; dnf install qemu-kvm libvirt virt-install ``` I'd like to personally thank Lance Albertson (OSUOSL), Eduard Abdullin (Almalinux) for their patches, that were used for these Virt SIG builds. As always, you'll be able to find branched packages under https://gitlab.com/CentOS/virt/rpms On behalf of the CentOS Virt SIG, -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | @arrfab[@fosstodon.org]

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