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CentOS 8 stream Messaging SIG rabbitmq mirrorlist url
by Daniel Nilsson 01 Feb '22

01 Feb '22

Hi Not sure if there is work already going on or if it has not been brought to anyones attention. The mirrorlist url supplied by centos-release-rabbitmq-38 rpm in the Extras repo still uses the now removed "mirrorlist.centos.org/8" address. Are there any plans to release a new version of the package that use/supply the working "8-stream" address? Best regards Daniel Nilsson Daniel Nilsson Software Integrations Engineer dnilsson(a)itrsgroup.com www.itrsgroup.com ITRS Group Första Långgatan 19 413 27 Gothenburg Sweden Tel.+46 31-352 56 00 Internet communications are not secure and therefore the ITRS Group does not accept legal responsibility for the contents of this message. Any view or opinions presented are solely those of the author and do not necessarily represent those of the ITRS Group unless otherwise specifically stated. [itrs.email.signature] Disclaimer The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful. This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more visit the Mimecast website.

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Re: [CentOS-devel] Is advanced-virt (Virtualization SIG) not relevant anymore with latest CentOS Stream 8?
by Igor Raits 31 Jan '22

31 Jan '22

Hi Danilo, Thanks for the very quick response! And thanks Sandro for including relevant people (as it was hard for me to find appropriate emails). Have a great day, On Tue, Nov 16, 2021 at 2:04 PM Danilo de Paula <ddepaula(a)redhat.com> wrote: > Yes, until RHEL 8.5 the latest-and-greatest virt packages used to be > shipped within Advanced Virtualization. But since AV packages are part of > RHEL now, there's no need for updating the SIG anymore because RHEL has the > most updated packages and, by consequence, c8s should have those builds too. > > > > On Tue., Nov. 16, 2021, 7:25 a.m. Sandro Bonazzola, <sbonazzo(a)redhat.com> > wrote: > >> +Eduardo Lima <etrunko(a)redhat.com> +Danilo Cesar Lemes de Paula >> <ddepaula(a)redhat.com> >> >> Il giorno mar 16 nov 2021 alle ore 12:52 Igor Raits <igor.raits(a)gmail.com> >> ha scritto: >> >>> Hello, >>> >>> I've noticed that the latest c8s repos ship libvirt/qemu-kvm (and other >>> related things) newer than the advanced virtualization repository… which >>> brings me to a question if it is still worth using those builds or not? >>> >>> I've been trying to dig into some mailing list conversations (which are >>> pretty much non-existent at this point) and IRC meetings (which I did not >>> see in October, but found one in November[1]). Found only mention that >>> libvirt/qemu will not be available for power arches since c9s and that's >>> what probably virt sig will build (if my understanding of meeting minutes >>> are correct). >>> >>> Any piece of information would be very helpful :) >>> >>> >>> [1] >>> https://www.centos.org/minutes/2021/November/centos-meeting.2021-11-03-17.0… >>> >> >> >> -- >> >> Sandro Bonazzola >> >> MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV >> >> Red Hat EMEA <https://www.redhat.com/> >> >> sbonazzo(a)redhat.com >> <https://www.redhat.com/> >> >> *Red Hat respects your work life balance. Therefore there is no need to >> answer this email out of your office hours.* >> >> >>

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Does Red Hat publish EUS source?
by Gordon Messmer 31 Jan '22

31 Jan '22

https://en.wikipedia.org/w/index.php?title=Red_Hat_Enterprise_Linux#Extende… I do see that EUS source packages are available to customers in the errata portal, but I was looking at the article for Red Hat Enterprise Linux on Wikipedia, and saw a note there to the effect that rebuilds don't publish updates from EUS because Red Hat doesn't publish it for rebuilding. I vaguely recall that CentOS pulled source from an FTP source that the claim might describe, but I can't find any information that I think is really conclusive. The question is mostly trivia, but if the claim on Wikipedia isn't accurate, then I'll update that page.

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Dist-git's git structure in CBS
by Pierre-Yves Chibon 28 Jan '22

28 Jan '22

Good Morning Everyone, Nowadays we have different structures in the git repositories of the dist-git instance for CBS and for CentOS-Stream. CBS' dist-git (used by the SIG and for CentOS Linux 7, CentOS-Stream 8), uses something like: ├── .gitignore ├── .kernel.metadata ├── SOURCES │ ├─ .... │ ├── patch-5.14.0-redhat.patch │ ├─ ... │ └── x509.genkey.rhel └── SPECS └── kernel.spec Ie: patches and other sources in a SOURCES folder, spec in a SPECS folder and the link between the git repo and the lookaside cache is done via the `.<packagename>.metadata` file. source: https://git.centos.org/rpms/kernel/tree/c8s On CentOS-Stream 9, the structure is similar to Fedora's structure where everything is in the top directory. source: https://gitlab.com/redhat/centos-stream/rpms/kernel I was wondering if there has been some thoughts given on harmonizing these structures? I am particularly interested on changing them for SIG building on the top of CS9. It would make pulling changes from gitlab onto the SIG's repo a lot easier I believe. I suspect there may be some work to do for this and if I'm pointed to the right direction, I wouldn't mind having a look at it but first I'd like to know if it's a good idea :) So... what do you think? Thanks, Pierre

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Broken CentOS Stream 9 repo today
by Alfredo Moralejo Alonso 28 Jan '22

28 Jan '22

Hi, After last compose CS9 promotion, BaseOS/AppStream repos seems broken: - [root@6b5a57fab5b4 /]# dnf install gcc - Last metadata expiration check: 0:00:25 ago on Thu Jan 27 08:45:21 2022. - Error: - Problem: cannot install the best candidate for the job - - nothing provides libgomp = 11.2.1-7.6.el9 needed by gcc-11.2.1-7.6.el9.x86_64 - - nothing provides libgcc >= 11.2.1-7.6.el9 needed by gcc-11.2.1-7.6.el9.x86_64 - (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) - [root@6b5a57fab5b4 /]# dnf install gcc-c++ - Last metadata expiration check: 0:01:56 ago on Thu Jan 27 08:45:21 2022. - Error: - Problem: cannot install the best candidate for the job - - nothing provides libstdc++ = 11.2.1-7.6.el9 needed by gcc-c++-11.2.1-7.6.el9.x86_64 - (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) - [root@6b5a57fab5b4 /]# Repoclosure is also complaining: - package: gcc-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libgcc >= 11.2.1-7.6.el9 - libgomp = 11.2.1-7.6.el9 - package: gcc-c++-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libstdc++ = 11.2.1-7.6.el9 - package: gcc-gfortran-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libquadmath = 11.2.1-7.6.el9 - libgfortran = 11.2.1-7.6.el9 - package: libgomp-offload-nvptx-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libgomp = 11.2.1-7.6.el9 - package: libquadmath-devel-11.2.1-7.6.el9.i686 from appstream - unresolved deps: - libquadmath = 11.2.1-7.6.el9 - package: libquadmath-devel-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libquadmath = 11.2.1-7.6.el9 - package: libstdc++-devel-11.2.1-7.6.el9.i686 from appstream - unresolved deps: - libstdc++(x86-32) = 11.2.1-7.6.el9 - package: libstdc++-devel-11.2.1-7.6.el9.x86_64 from appstream - unresolved deps: - libstdc++(x86-64) = 11.2.1-7.6.el9 Best regards, Alfredo

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SIGs / cbs.centos.org change proposal
by Fabian Arrotin 27 Jan '22

27 Jan '22

Recently, the Hyperscale SIG created an infra ticket about a proposal to change the rpm 'vendor' macro to be more specific than 'CentOS' for pgks built on https://cbs.centos.org . For details, you can read https://pagure.io/centos-infra/issue/621 I think it's a very good idea as we also started to show a difference between distro (/9-stream) vs SIGs (on mirror.stream.centos.org) so also doing that at the rpm level (already using a different gpg key anyway) would be easy enough to modify. Here is our proposal : define the default value for that rpm macro to 'CentOS Community Build Service' instead of 'CentOS'. It's also possible to request a specific override (what we tested with Hyperscale tags) and I'd even think it would be better to create directly each new tag with a common pattern like 'CentOS <sig_name> SIG' , which would be easy to automate when we have to create new tags. This is just a Request for change, that we intent to implement next week, so if we don't have any negative feedback (we don't think people are actually parsing that field - yet - ) about this change, it will go live next week. -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | twitter: @arrfab

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[infra] : Planned outage : cbs.centos.org/koji
by Fabian Arrotin 26 Jan '22

26 Jan '22

Due to a storage migration (see https://pagure.io/centos-infra/issue/618), we'll have to shutdown and restart the koji instance on cbs.centos.org Migration is scheduled for """"Thursday January 27th, 07:30 am UTC time"""". You can convert to local time with $(date -d '2022-01-27 07:30 UTC') The expected "downtime" is estimated to ~15 minutes , time needed to : - shutdown kojihub (and kojid/builders) using that nfs host - last data sync between old and new nfs storage node - restart kojihub and kojid/builders nodes Thanks for your comprehending and patience. on behalf of the Infra team, -- Fabian Arrotin The CentOS Project | https://www.centos.org gpg key: 17F3B7A1 | twitter: @arrfab

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CPE Feedback Survey Q3-Q4 2021
by Ant Carroll 24 Jan '22

24 Jan '22

Hey folks, We have been doing the Community Platform Engineering feedback survey for a while now, and we still use the feedback collected to adjust our communications and processes. We would like to hear your thoughts again through a short survey we've put together to learn how your experiences have been with us since July 2021. If you could take the time (5mins max) to complete it, it would be hugely valuable as we work on this continuous improvement - https://fedoraproject.limequery.com/6 The survey will remain open until Feb 07th (23:59 UTC). Know more about the team at: https://docs.fedoraproject.org/en-US/cpe/ Cheers, Ant -- Ant Carroll Associate Manager, Software Engineering Red Hat Waterford <http://www.redhat.com> Communications House Cork Road, Waterford City ancarrol(a)redhat.com M: +353876213163 IM: ancarrol @redhatjobs <https://twitter.com/redhatjobs> redhatjobs <https://www.facebook.com/redhatjobs> @redhatjobs <https://instagram.com/redhatjobs> <https://www.redhat.com/>

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rseq in glibc coming to CentOS Stream 9
by Florian Weimer 19 Jan '22

19 Jan '22

The only way to implement sched_getcpu efficiently on AArch64 is to use rseq and the per-thread CPU field in the rseq area. Unlike other architectures, there is no vDSO acceleration for sched_getcpu or getcpu on AArch64, and there does not seem to be a special register available that could be used for this. (E.g., on x86-64, the kernel uses otherwise-unused segment limits; access is not particularly fast, but at least there is no system call involved.) No application changes are needed to benefit from this optimization, and even architectures with existing vDSO acceleration benefit (slightly). Upstream glibc will enable rseq in the upcoming 2.35 release, and while we are not putting that glibc version into CentOS anytime soon, we have backported the rseq acceleration for sched_getcpu to CentOS Stream 9, glibc-2.34-19.el9 to be precise: glibc: Optional sched_getcpu acceleration using rseq <https://bugzilla.redhat.com/show_bug.cgi?id=2024347> However, Fedora rawhide testing revealed an integration issue with CRIU: Implement rseq support, as required by glibc 2.35 <https://github.com/checkpoint-restore/criu/issues/1696> criu: Implement rseq support <https://bugzilla.redhat.com/show_bug.cgi?id=2033397> Therefore, we currently do not enable rseq acceleration by default, but we plan to do so in the future, once CRIU fixes are available in relevant places. Therefore, applications need to be launched with the GLIBC_TUNABLES=glibc.pthread.rseq=1 environment variable for the time being to benefit from rseq-based sched_getcpu acceleration. This time, no bad seccomp interactions are expected because we leaned on browsers a while back to fix their sandboxes. Container engines should not be impacted because the glibc integration treats an initial EPERM failure of the rseq system call as an indicator that rseq is not available. (Only success for the first rseq system call followed by failure for rseq system calls on newly created threads is problematic; this part needed fixing in browser sandboxes.) A few applications which currently use rseq will need integration with the new glibc way of doing things if they want to keep benefiting from rseq. Mathieu Desnoyers is enhancing librseq; direct consumers such as tcmalloc will need to be updated separately. I do not know yet how the interaction between CentOS Stream 9 glibc and these applications will look like because we have not backported the public rseq symbols that glibc is adding in glibc 2.35 (__rseq_offset, __rseq_size, __rseq_flags). The current downstream glibc default (without GLIBC_TUNABLES=glibc.pthread.rseq=1) is not to use rseq at all, leaving it available for application use, so we have some time to figure out the details. Thanks, Florian

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Board office hours
by Shaun McCance 18 Jan '22

18 Jan '22

Last week was a board meeting, so this week we'll have board office hours. Join the board tomorrow, January 19, at 15:00 UTC. https://meet.google.com/atj-vfsm-emk If you need dial-in details instead, just email me off-list. Thanks, Shaun

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