KernelCI Weekly Newsletter (Week 3)

KernelCI Weekly Newsletter (Week 3)

[Denys Fedoryshchenko]

**Summary**

This week, we focused on the following:
- Enabling full support for the GRUB bootloader, including NFS-rootfs
support.
- Enabling kselftests on the Aaeon x86 platform.
- Fixing kselftest build issues caused by missing environment
variables.
- Enabling net/kselftest on x86 (amd64) and arm64 platforms.

**Sysadmin**

Except regular production updates, we have been working on:
- Separating storage tokens for Kubernetes build clusters to allow
testing of new storage solutions without impacting production.

**kci-dev**

As kci-dev continues to evolve, we released version 0.1.1. A special
thanks to Arisu! 
We have been utilizing kci-dev for various purposes, and here are some
examples of how it can be used:

- **Running a Single Test on a Specific Platform in Real-Time**  
  ```
  kci-dev checkout --giturl
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git --
branch master --tipoftree --jobfilter kbuild-gcc-12-x86-chromeos-intel
--jobfilter tast-power-x86-intel --test tast-power-x86-intel --
platformfilter acer-cb317-1h-c3z6-dedede --watch
  ```
  This command checks out the latest kernel from the master branch,
builds it with GCC-12, runs the `tast-power` test on the `acer-cb317-
1h-c3z6-dedede` platform, and monitors the results in real-time. Such
combinations are often used to verify the consistency of test results
on specific platforms.

- **Testing a Specific Tree on Staging After Configuration Changes**  
  ```
  kci-dev checkout --giturl
https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git
--branch fixes --tipoftree
  ```
  This command checks out the latest kernel from the `fixes` branch of
the `linux-kselftest` repository and builds it with the default
configuration. It invokes the same builds and tests as in production
when a new revision is pushed to the `linux-kselftest` repository.

- **Initiating Bisection (Early Stage)**  
  ```
  kci-dev bisect --giturl
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git --
branch master --jobfilter kbuild-gcc-12-x86-chromeos-intel --jobfilter
tast-power-x86-intel --test tast-power-x86-intel --platformfilter acer-
cb317-1h-c3z6-dedede --good 2f27fce67173bbb05d5a0ee03dae5c021202c912 --
bad 2d5404caa8c7bb5c4e0435f94b28834ae5456623
  ```
  Using this command, we can initiate a bisection on a specific
platform and test, while monitoring the results in real-time. The `--
good` and `--bad` parameters correspond to Git commit hashes, following
the same procedure as the `git bisect` command.

We will share more examples of how to use kci-dev in the next
newsletter.

**Planned Work**

Next week, we plan to update the production server. As a result, there
will be some downtime for `storage.kernelci.org` and
`docs.kernelci.org`. We will strive to minimize the downtime as much as
possible.