mirror of
https://git.launchpad.net/livecd-rootfs
synced 2025-10-29 16:04:09 +00:00
ff6b3824d8
To boot initrdless, the kernel supports a limited number of ways to specify the location of the root filesystem[1]. One of them is to use the PARTUUID (which will be different for every cloud-image), another is to use the PARTLABEL (partition name). To allow the use of PARTLABEL in the kernel command line and make our cloud-images more self-describing, set the PARTLABEL to cloudimg-rootfs which is the same label we use for the file system inside this partition. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/block/early-lookup.c#n217
98 lines
2.5 KiB
Bash
Executable File
98 lines
2.5 KiB
Bash
Executable File
#!/bin/bash -eux
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case $ARCH in
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ppc64el|powerpc)
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;;
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*)
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exit 0
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;;
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esac
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IMAGE_STR="# CLOUD_IMG: This file was created/modified by the Cloud Image build process"
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FS_LABEL="cloudimg-rootfs"
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# 2.4G GiB
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# Since Plucky, ppc64el need more than the default 2.2GiB
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IMAGE_SIZE=2576980378
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. config/binary
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. config/functions
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create_partitions() {
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disk_image="$1"
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sgdisk "${disk_image}" \
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--zap-all
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sgdisk "${disk_image}" \
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--new=2::+8M \
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--new=1:
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sgdisk "${disk_image}" \
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--change-name=1:"$FS_LABEL" \
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-t 2:4100 \
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-t 1:"$(gpt_root_partition_uuid $ARCH)"
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sgdisk "${disk_image}" \
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--print
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}
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install_grub() {
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mkdir mountpoint
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mount_partition "${rootfs_dev_mapper}" mountpoint
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chroot mountpoint apt-get -qqy update
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chroot mountpoint apt-get -qqy install grub-ieee1275
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chroot mountpoint apt-get -qqy remove --purge grub-legacy-ec2
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chroot mountpoint apt-get autoremove --purge --assume-yes
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# set the kernel commandline to use hvc0
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mkdir -p mountpoint/etc/default/grub.d
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cat << EOF > mountpoint/etc/default/grub.d/50-cloudimg-settings.cfg
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${IMAGE_STR}
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# Set the recordfail timeout
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GRUB_RECORDFAIL_TIMEOUT=0
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# Do not wait on grub prompt
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GRUB_TIMEOUT=0
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# Set the default commandline
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GRUB_CMDLINE_LINUX_DEFAULT="console=hvc0 earlyprintk"
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EOF
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prep_partition="${loop_device}p2"
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chroot mountpoint grub-install "${prep_partition}" \
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--no-nvram \
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--boot-directory=/boot \
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--target=powerpc-ieee1275
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divert_grub mountpoint
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chroot mountpoint update-grub
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replace_grub_root_with_label mountpoint
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undivert_grub mountpoint
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umount_partition mountpoint
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rmdir mountpoint
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}
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disk_image=binary/boot/disk.ext4
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create_empty_disk_image "${disk_image}"
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create_partitions "${disk_image}"
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mount_image "${disk_image}" 1
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# Copy the chroot in to the disk
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make_ext4_partition "${rootfs_dev_mapper}"
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mkdir mountpoint
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mount "${rootfs_dev_mapper}" mountpoint
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cp -a chroot/* mountpoint/
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# the image has been modified from its disk-image-uefi base so the manifest and filelist should be regenerated
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chroot mountpoint dpkg-query -W > binary/boot/filesystem.packages
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(cd mountpoint && find -xdev) | sort > binary/boot/filesystem.filelist
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create_manifest "mountpoint/" "$PWD/livecd.ubuntu-cpc.disk-image.manifest" "$PWD/livecd.ubuntu-cpc.disk-image.spdx" "cloud-image-$ARCH-$(date +Y%m%dT%H:%M:%S)"
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umount mountpoint
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rmdir mountpoint
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install_grub
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clean_loops
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trap - EXIT
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