Dracut initramfs boot #1191
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Dracut initramfs boot #1191
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anderbubble
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enhancement
anderbubble
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JasonYangShadow,
mslacken,
gmkurtzer and
jcsiadal
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@JasonYangShadow I refactored our work here, squashing redundant commits and making sure everything had a clear progression and commit messages. Let me know what you think. |
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Rebased on main. |
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The initramfs stage supports serving an initramfs image from within the container image, typically generated by dracut. Signed-off-by: xu yang <xyang@ciq.com> Signed-off-by: Jonathon Anderson <janderson@ciq.com>
warewulf-dracut includes a dracut module to be installed in a container image to support building an initramfs that can boot from Warewulf. Signed-off-by: Jonathon Anderson <janderson@ciq.com>
dracut.ipxe boots an initramfs detected in the container image. This required a few small changes to warewulfd and the wwinit overlay to accommodate the dracut initramfs configuring the network interface before wwinit: - Include .NetDevs in the ipxe configuration template, so that dracut can configure interfaces with the correct names. - Configure NetworkManager to not keep the initramfs configuration, in stead applying the configuration found by wwinit. Signed-off-by: Jonathon Anderson <janderson@ciq.com>
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
initramfs uses tmpfs regardless of whether root=tmpfs in Warewulf. As such, 90-selinux needs to be updated to detect the actual provenance of /, rather than the configured setting. Signed-off-by: Jonathon Anderson <janderson@ciq.com>
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If we link this together with #815 we have state full install. Steps for this would be:
This would allow a dump of the container to the rootfs. What is till missing would be checks, if the rootfs needs to be updated or reinstalled. I think this could achieved by placing configurations in |
mslacken
approved these changes
May 8, 2024
| then | ||
| info "Loading ${archive}" | ||
| (curl --silent -L "${archive}" | gzip -d | cpio -im --directory="${NEWROOT}") || die "Unable to load ${archive}" | ||
| fi |
There was a problem hiding this comment.
die isn't a posix shell function, so (echo "Unable to load ${archive}";exit 1) should do the same.
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@anderbubble my commit is WIP, some args get lost |
I think the problem here is that |
had to add a new package containerrun which gathers all functions which run or build a container in order to avoid circular depencies Signed-off-by: Christian Goll <cgoll@suse.com>
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@anderbubble @JasonYangShadow Buidling the dracut works now on |
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Description of the Pull Request (PR):
Support booting a dracut image from a container and using it to bootstrap a large container.
To-do
This fixes or addresses the following GitHub issues:
Before submitting a PR, make sure you have done the following:
git commit --signoff) in agreement to the DCO