livecd-rootfs/live-build/ubuntu-server/hooks/04-kernel-bits.binary

#!/bin/bash -eux
# vi: ts=4 noexpandtab

case $PASS in
    ubuntu-server-minimal.ubuntu-server.installer.*.*)
        exit 0
        ;;
    ubuntu-server-minimal.ubuntu-server.installer.*)
        flavor=${PASS##*.}
        ;;
    *)
        exit 0
        ;;
esac

PROJECT=$PROJECT${SUBARCH:+-$SUBARCH}

# ensure this initrd is casperized
chroot chroot update-initramfs -u

# Fish out generated kernel image and initrd
mv chroot/boot/initrd.img-* ${PWD}/livecd.${PROJECT}.initrd-$flavor
mv chroot/boot/vmlinu?-* ${PWD}/livecd.${PROJECT}.kernel-$flavor
chmod a+r ${PWD}/livecd.${PROJECT}.initrd-$flavor ${PWD}/livecd.${PROJECT}.kernel-$flavor
adjust hooks for move of live-server to layers 4 years ago			`#!/bin/bash -eux`
			`# vi: ts=4 noexpandtab`

			`case $PASS in`
Produce a tarball of artifacts for netbooting during live-server build. 3 years ago			`ubuntu-server-minimal.ubuntu-server.installer..)`
			`exit 0`
			`;;`
add a minimal server layer under the full server layer 3 years ago			`ubuntu-server-minimal.ubuntu-server.installer.*)`
adjust hooks for move of live-server to layers 4 years ago			`flavor=${PASS##*.}`
			`;;`
			`*)`
			`exit 0`
			`;;`
			`esac`

Add intel-iot server image support to devel. 2 years ago			`PROJECT=$PROJECT${SUBARCH:+-$SUBARCH}`

live-server: place kernel in the minimal layer By placing the kernel in minimal, we can achieve the following improvements: 1. Space savings - there are redundant packages present in the ship-live pool and in the live layer. Adding the kernel to minimal means that the kernel is already in the live layer, and we don't then also need it in the pool. 2. Time savings - informal vm testing suggests more than a minute improvement to have the kernel preinstalled over installing it at runtime. As always, there is a cost tradeoff: 1. If a different kernel is desired, we need to be able to remove this preinstalled kernel. Relevant curtin and subiquity changes are already landed. 2. When installing that other kernel, it'll take longer than today due to still needing to install a kernel at runtime + the time cost of removing the preinstalled kernel. 4 months ago			`# ensure this initrd is casperized`
			`chroot chroot update-initramfs -u`

adjust hooks for move of live-server to layers 4 years ago			`# Fish out generated kernel image and initrd`
			`mv chroot/boot/initrd.img-* ${PWD}/livecd.${PROJECT}.initrd-$flavor`
			`mv chroot/boot/vmlinu?-* ${PWD}/livecd.${PROJECT}.kernel-$flavor`
			`chmod a+r ${PWD}/livecd.${PROJECT}.initrd-$flavor ${PWD}/livecd.${PROJECT}.kernel-$flavor`