With the migration from linux-kvm to linux-virtual/generic for the mantic minimal
images we can now start building arm64 minimal cloud images.
When building initial test images we noticed that the flash-kernel package was being
installed. This is not required for EFI images.
This commit removes the flash-kernel package from the cloud images arm installs
The only images built using the livecd-rootfs ubuntu-cpc project for arm64 and armhf
which are not cloud images (which therefore do not require flash-kernel) are the
raspi images. raspi does require flash-kernel. But the raspi images use the
`ubuntu-server-raspi` task to install the flash-kernel. As such this non raspi
flash-kernel package install can be completely removed.
It also means that initramfs-tools and dracut-install are installed as these are dependencies
of flash-kernel package.
minimized cloud image policy, introduced in version 23.10.16, is to not install recommends for any package
installs during build. This is to keep the image as small as possible. This also extends to
the grub related packages.
This solves the problems detailed in LP: #2037075 and aligns other arches more with amd64 install of
grub/shim packages for both minimized and non minimized ubuntu-cpc cloud image builds.
When trying to make changes to refactor livecd-rootfs, it is difficult to
know what side effects a change may have because of the use of globs on
arch/subarch and the lack of an authoritative list of supported arch
combinations.
This assembles a list of all possible values for $ARCH:$SUBARCH by looking at
all existing uses of $SUBARCH in live-build/auto/config and combining with
etc/default-arches from ubuntu-cdimage:
$ grep + etc/default-arches |grep -vE '(trusty|xenial|bionic|focal)[[:space:]]|appliance'
It also includes a special-case *appliance* glob, because there are many
Ubuntu Core appliance builds and there may be more in the future, and we
don't want to have to update livecd-rootfs with a hard-coded list.
Otherwise, this includes all currently used / supported combinations. The
amd64+kassel subarch is referenced in the code, but stopped being built a
while ago because "end of contract"; and there are some older no-longer-used
subarchs for particular raspi variants, which there is work to clean up
separately. So this should be a no-op wrt buildability of any existing
images on mantic - and if not, that's important for us to know!
With the introduction of the 6.5 kernel for mantic on 13th September ago we are seeing image build failures
on the armhf builds. The build failure was `No kernel output for generic-lpae!`.
Introduced in the 6.4 kernel and therefore now also in 6.5 there is no generic-lpae flavor anymore. it's just generic now.
As such this commit updates the expected flavour for armhf to generic.
minimize-manual takes an argument of the path to the chroot but of the 3 commands that are run the argument
is only used twice and with the third hardcoding "chroot" as the path to the chroot.
Thankfully "chroot" has been the patch passed in for the current uses of minimize-manual but this
could cause issues later if that were to change.
This commit resolves the problem preventing future issues.
The image filelists created during ubuntu-cpc project image builds were not sorted.
Soring the filelists makes it easier to compare the filelists without needing to sort first.
fuse3 was previously installed through recommends but with minimized images we no longer install recommends packages.
It is only required when preseeding snaps so does not need to be present in all minimized images so does not
need to be in the cloud-minimal seed.
Steve Langasek
Philip Roche
Michael Hudson-Doyle
Dan Bungert
Utkarsh Gupta
Gauthier Jolly
Łukasz 'sil2100' Zemczak
Sebastien Bacher
Utkarsh Gupta