- automotive-sig - lists.centos.org

CentOS Auto SIG Meeting this week
by Jeffrey Osier-Mixon 03 May '22

03 May '22

Hi all - this is a reminder of the monthly CentOS Automotive SIG meeting this week on Wednesday, May 4, at 1000 EDT / 1600 CET. The meeting will be held online at https://meet.google.com/hkx-btgd-dyc Please drop me a note if you would like to be added to the Google invite, but the invitation is not required in order to attend - all are welcome. Draft agenda: - introduction & action items - technical updates: AutoSD, documentation, GitLab namespace, sample images - Q & A Jeffrey "Jefro" Osier-Mixon | jefro(a)redhat.com Red Hat Office of the CTO | Sr. Principal Community Architect, Automotive

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 02 May '22

02 May '22

Good Morning Everyone, So here are some of the changes that we have worked on last week: * Resizing the '/' partition: After flashing an image onto a SD card, by default the '/' isn't extended to the full size of the disk. The documentation at: https://sigs.centos.org/automotive/building/resize_partition/ provides instructions on how one can resize that partition to make use of the entire size of their SD card. * It is now possible to build external image manifest with the sample-image repo If you run make with the IMAGEDIR=/path/to/manifest/dir then the makefile will automatically pick up any manifest files there and build them just like the regular sample manifests. This makes it easier to maintain and experiment with your own manifests ouside of the repo. * All manifests now enable EFI runtime services The realtime kernel normally disables EFI runtime services because the kernel cannot make realtime guarantees about all possible EFI firmwares. However, supporting EFI is important, so the manifest now default to passing efi=runtime on the kernel commandline to enable this. * Ability to add custom prefixes to image builds If you prepend `@something` to the build target, like so: $ make cs9-qemu-minimal-ostree(a)sometag.x86_64.qcow2 That will be picked up as the resulting filename of the build, although the build is not affected in other ways. This is useful if you want to build a modified image, for example adding some rpms, and want to distinguish the resultant build from unmodified ones. * Lookaside cache structure on CentOS The work we have done to allow a structure in CentOS' lookaside cache which does not rely on a git branching structure as been announced on the centos-devel mailing list: https://lists.centos.org/pipermail/centos-devel/2022-April/120351.html Happy hacking! Pierre

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 22 Apr '22

22 Apr '22

Good Morning Everyone, So here are some of the changes that we have worked on this week: * We worked on some documentation about the different places you can contribute packages in our ecosystem: Fedora, EPEL, the Automotive SIG and AutoSD, cf: https://sigs.centos.org/automotive/contributing/building_packages/ * The general documentation about best practices for SIGs to use gitlab has been merged: https://sigs.centos.org/guide/gitlab/ * We have added explicitly the linux-firmware-automotive package to content resolver to replace the linux-firmware package with the aim to reduce the image size by dropping the firmware that aren't relevant, cf: https://github.com/minimization/content-resolver-input/pull/709 * We added some documentation on how you can use single-file offline ostree updates: https://sigs.centos.org/automotive/building/updating_ostree/#offline-delta-… * The example rpms that were in the sample-image repostitory have been moved to https://gitlab.com/CentOS/automotive/rpms, and the COPR repo where they used to be built has been removed from the manifests. * The manifests have changed to defaulting to static_uuids=true, where it was false before. This means repeated builds of the same image will be more reproducible, although the uuids will not be unique between builds. * Some initial support for encrypting the root filesystem with LUKS was added. Expect more work on this later though. * We improved our documentation on customizing OSbuild templates: https://sigs.centos.org/automotive/building/customize_template/ Happy hacking! Pierre

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 18 Apr '22

18 Apr '22

Good Morning Everyone, So here are some of the changes that we have worked on last week: * We have migrated under the centos namespace on gitlab.com: https://gitlab.com/CentOS/automotive * The new location for the kernel sources: https://gitlab.com/CentOS/automotive/src/kernel/kernel-automotive-9 * The git part of dist-git for the kernel-automotive package: https://gitlab.com/CentOS/automotive/rpms/kernel-automotive * We have split the content of the automotive-sig repository into two repositories: * The SIG's documentation: https://gitlab.com/CentOS/automotive/sig-docs * The sample images (manifests, docs, tools, demos...): https://gitlab.com/CentOS/automotive/sample-images * We have archived https://gitlab.com/redhat/automotive/automotive-sig (so update your bookmarks!) Happy hacking! Pierre

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Weekly update on the automotive-sig
by Alexander Larsson 08 Apr '22

08 Apr '22

Good Morning Everyone, So here are some of the changes that we have worked on this week: * You can now override the os version field in the ostree commit in the images using the `ostree_os_version` variable. * The runvm script now supports the `--watchdog` argument, which implements an external watchdog that survives across VM resets. * There is a new image that demonstrates how the watchdog can be used to implement unattended OSTree updates. See https://sigs.centos.org/automotive/building/unattended_updates/ for docs about this. * There were various fixes to the grub configuration to support the above. Happy hacking! Alex -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Alexander Larsson Red Hat, Inc alexl(a)redhat.com alexander.larsson(a)gmail.com

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Weekly update on the automotive-sig
by Alexander Larsson 01 Apr '22

01 Apr '22

Good Morning Everyone, So here are some of the changes that we have worked on over the last couple of weeks: * We have worked on the osbuild templates and the repository structure to make them more flexible and less cs9 specific. This moves the configuration for the base cs9 stuff to a separate file distro/cs9.ipp.yml, and allows you to easily create similar setups for other distros (such as the AutoSD repos) which automatically creates the right makefile targets for them. Etc. * The work to enable a new lookaside cache structure is progressing: it has been updated and we confirmed that we can upload to it, but CBS still needs a little adjustment before it can use it (code is written, just needs to be deployed) * Started drafing the best-practices doc for using the centos namespace on gitlab.com: https://git.centos.org/centos/sig-guide/pull-request/4 * We greatly improved our suppport for OSTree repository use. The Makefile makes it easy to create and maintain a repo, and the runvm changes makes it easy to allow VMs to access that repo. The new docs give more context about what OSTree is and how it works. See https://sigs.centos.org/automotive/building/updating_ostree/ for more details! * Some changes in the OSTree image type. We now use bootloader=none, which means the grub config is not rewritten on each update. There is now an ostree remote configured, and it is used as the main origin for the ostree ref that was used, allowing for updates out of the box. The url for the remote is configurable with a variable. * The automotive SIG signed up for early access to gitlab.com/centos and help the CentOS infra team to smooth the edges there Happy hacking! -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Alexander Larsson Red Hat, Inc alexl(a)redhat.com alexander.larsson(a)gmail.com

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 25 Mar '22

25 Mar '22

Good Morning Everyone, So here are some of the changes that we have worked on over this week: * We can now build from gitlab.com/redhat/automotive in CBS (cbs.centos.org) note that we want to move to gitlab.com/centos/automotive as soon as the authentication questions between gitlab and the CentOS account system are solved. * Repository structure for AutoSD has been simplified. It used to include the CentOS repository from which the RPMs composing AutoSD had been pulled but that was not necessary and ended up making AutoSD split across multiple repositories instead of having just one. This is now fixed: https://autosd.sig.centos.org/AutoSD-9/latest/cs9/ (as I write this email I realize that we still have some redundancy in the path here...) * Remote-build has been improved to make it easier to run, now all you need is to write your configuration file and ensure you have podman installed on the targeted hosts! The client handles the rest. Sources: https://github.com/pypingou/remote_builder * Increased the size of the `/boot` partition on our sample images to 300M so it has enough space to install up to 3 kernels. * The rpm repository moved from the folder `product-builds` to `AutoSD-9` at: https://autosd.sig.centos.org/ Happy hacking! Pierre

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Weekly update on the automotive-sig
by Pierre-Yves Chibon 18 Mar '22

18 Mar '22

Good Morning Everyone, So here are some of the changes that we have worked on over the last couple of weeks: * We got a sub-domain for AutoSD, so you can browse it at: https://autosd.sig.centos.org/ * We kept on working on allowing a new lookaside cache structure on CentOS' infrastructure, giving SIGs more flexibility on their workflow (cf the discussion on the centos-devel list) * We worked on some sample containers interacting via SOME/IP, cf: https://lists.centos.org/pipermail/centos-automotive-sig/2022-March/000085.… * We have a new tool called runvm in the repo which makes it easier to run images with qemu * Our manifest now have a variable you can use if you want to add extra repositories (in addition to extra packages) when building images. It will go something like: `make cs9-qemu-minimal-regular.aarch64.qcow2 DEFINES='extra_repos=[{"id":"foo","baseurl":"http://foo"}] extra_rpms=["some","rpms"]'` (documentation will be updated shortly) Happy hacking! Pierre

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Office hours notes & new meetings pages
by Jeffrey Osier-Mixon 17 Mar '22

17 Mar '22

Hi all - you can find past CentOS Automotive SIG meeting recordings, as well as information on upcoming meetings and events, on this page: https://wiki.centos.org/SpecialInterestGroup/Automotive/Meetings Thanks to everyone who made it to today's office hours, where we discussed the current technical status as well as future options for hardware and board support. In particular, there was an active discussion around the best ways to accommodate custom kernels and long term support - thanks to Fulup and Stephane for a very interesting topic. I have started a wiki page specifically to discuss & track hardware ideas here: https://wiki.centos.org/SpecialInterestGroup/Automotive/Hardware So please feel free to log in and contribute, both here and elsewhere in the wiki. Thanks & see you all for the next meeting on April 8 Jeffrey "Jefro" Osier-Mixon | jefro(a)redhat.com Red Hat Office of the CTO | Sr. Principal Community Architect, Automotive

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Using containers in automotive
by Alexander Larsson 17 Mar '22

17 Mar '22

I talked earlier here about the work I was doing to improve the container sample image in the automotive sig repo. Well, today I landed the initial version of this in gitlab. Check out the docs here: https://sigs.centos.org/automotive/building/containers/ and: https://gitlab.com/redhat/automotive/automotive-sig/-/blob/main/sample-apps… Basically it create some "automotive-like" apps that use SOME/IP to talk to each other, then embed these apps into containers and run then as system services under systemd which are automatically started at boot. There is even some custom selinux policies to manage the vsomeip socket file access. Check it out and play with it. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Alexander Larsson Red Hat, Inc alexl(a)redhat.com alexander.larsson(a)gmail.com

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