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This commit is contained in:
Dennis ten Hoove 2023-07-31 03:07:34 +02:00
parent 748d514327
commit 14f6f930c1
1 changed files with 85 additions and 15 deletions
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100
bttrfs-deploy
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@ -26,6 +26,7 @@ declare -r bttrfs_deployment_dir="$bttrfs_dir/deployments"
# FIXME: Automatically filter trailing /
declare -r repo_url='https://repo.arkanelinux.org/bttrfs-test'
declare -r repo_default_image='arkanelinux'
declare -r os_name='arkane'
## Common functions
#
@ -68,13 +69,16 @@ done
# Initialize the system for bttrfs
init () {
# Ensure systemd-boot is installed before continuing, for it is the only thing we support
bootctl is-installed || cleanup_and_quit 'systemd-boot seems to not be installed'
printf '\e[1;34m-->\e[0m\e[1m Initializing bttrfs\e[0m\n'
[[ -d $bttrfs_dir ]] && cleanup_and_quit "$bttrfs_dir already exists"
# Create the /bttrfs subvolume
printf "\e[1;34m-->\e[0m\e[1m Creating $(readlink -m $bttrfs_dir) subvolume\e[0m\n"
btrfs subvolume create $bttrfs_dir || cleanup_and_quit "Failed to create btrfs subvolume $(readlink -m $bttrfs_dir)"
btrfs subvolume create $bttrfs_dir || cleanup_and_quit "Failed to create btrfs subvolume"
# Create directory structure
printf "\e[1;34m-->\e[0m\e[1m Creating directory structure\e[0m\n"
@ -86,20 +90,46 @@ init () {
$(readlink -m $bttrfs_dir/shared) ||
cleanup_and_quit "Failed to create /bttrfs and related directories"
# Add home shared subvolume and make writable
btrfs subvolume create $(readlink -m ${bttrfs_dir}/shared/home) || cleanup_and_quit "Failed to create home subvolume"
btrfs property set -f -ts $(readlink -m ${bttrfs_dir}/shared/home)
# Write default config file
printf "\e[1;34m-->\e[0m\e[1m Adding default config file\e[0m\n"
cat <<- END > $bttrfs_dir/config
# Primary filesystem operating system
primary_os='arkanelinux'
primary_os='${repo_default_image}'
# Do not copy custom root filesystem to new deployments
custom_rootfs=0
# Write /bttrfs/overlay overlay to root or etc
enable_overlay=0
# Do not install additional packages defined customize
custom_packages=0
END
# Write bootloader entries
# TODO: Just loop this
printf "\e[1;34m-->\e[0m\e[1m Adding bootloader entries\e[0m\n"
cat <<- END > /boot/loader/entries/${os_name}-primary-a.conf
title Arkane GNU/Linux - Primary A
linux /vmlinuz-linux
initrd /amd-ucode.img
initrd /intel-ucode.img
initrd /initramfs-linux.img
options root="LABEL=arkane_root" rootflags=subvol=bttrfs/deployments/primary_a/rootfs rw
END
cat <<- END > /boot/loader/entries/${os_name}-primary-b.conf
title Arkane GNU/Linux - Primary B
linux /vmlinuz-linux
initrd /amd-ucode.img
initrd /intel-ucode.img
initrd /initramfs-linux.img
options root="LABEL=arkane_root" rootflags=subvol=bttrfs/deployments/primary_b/rootfs rw
END
exit 0
}
teardown () {
@ -137,6 +167,9 @@ teardown () {
btrfs property set -f -ts $(readlink -m $bttrfs_dir) ro false
btrfs subvolume delete $(readlink -m $bttrfs_dir)
# Remove bootloader files
rm -v /boot/loader/entries/${os_name}-*
else
printf '\e[1;34m-->\e[0m\e[1m Teardown canceled, no changes made to system\e[0m\n'
fi
@ -189,23 +222,60 @@ deploy () {
printf "\e[1;34m-->\e[0m\e[1m Validating integrity\e[0m\n"
sha1sum "$(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]})" |
grep "${data[3]}" ||
(printf "\e[1;31m<#>\e[0m Checksum does not match repo file, got $chksum\e[0m\n"; exit 1)
cleanup_and_quit "Checksum does not match repo file, got $chksum\e[0m\n"
# Extract the root image
# TODO: Just for loop this?
# TODO: Add a bunch of control flow to check if stuff already exists and if a or b needs to be targeted
#
# Extract the root image if not yet extracted
printf "\e[1;34m-->\e[0m\e[1m Writing root\e[0m\n"
[[ ! -e $(readlink -m $bttrfs_dir/cache/${data[0]}.img) ]] &&
(tar -xf $(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]}) -C $(readlink -m ${bttrfs_dir}/cache/) "${data[0]}.img" ||
(printf "\e[1;31m<#>\e[0m Failed extracting root image from tarball\e[0m\n"; exit 1))
[[ ! -e $(readlink -m ${bttrfs_dir}/cache/${data[0]}.img) ]] &&
tar -xf $(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]}) -C $(readlink -m ${bttrfs_dir}/cache/) "${data[0]}.img" ||
cleanup_and_quit 'Failed to extract root'
# Write the root image
btrfs receive -f $(readlink -m ${bttrfs_dir}/cache/${data[0]}.img) $(readlink -m ${bttrfs_dir}/deployments/primary_a/)
btrfs receive -f $(readlink -m ${bttrfs_dir}/cache/${data[0]}.img) $(readlink -m ${bttrfs_dir}/deployments/primary_a/) ||
cleanup_and_quit 'Failed to receive root'
#printf "\e[1;34m-->\e[0m\e[1m Writing etc\e[0m\n"
#printf "\e[1;34m-->\e[0m\e[1m Writing var\e[0m\n"
# Cleanup root image
rm $(readlink -m ${bttrfs_dir}/cache/${data[0]}.img)
# Remove uncompressed img files to save space
#printf "\e[1;34m-->\e[0m\e[1m Cleaning up extracted images\e[0m\n"
#rm ${bttrfs_dir}/
# Ensure /var exists for mounting
mkdir $(readlink -m ${bttrfs_dir}/)
# Extract the etc image if not yet extracted
printf "\e[1;34m-->\e[0m\e[1m Writing etc\e[0m\n"
[[ ! -e $(readlink -m ${bttrfs_dir}/cache/${data[0]}-etc.img) ]] &&
tar -xf $(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]}) -C $(readlink -m ${bttrfs_dir}/cache/) "${data[0]}-etc.img" ||
cleanup_and_quit 'failed to extract etc'
# Write the etc image, we have to unlock rootfs temporarily to do this
btrfs property set -f -ts $(readlink -m ${bttrfs_dir}/deployments/primary_a/rootfs) ro false ||
cleanup_and_quit 'Failed to unlock root to write etc'
btrfs receive -f $(readlink -m ${bttrfs_dir}/cache/${data[0]}-etc.img) $(readlink -m ${bttrfs_dir}/deployments/primary_a/rootfs/) ||
cleanup_and_quit 'Failed to receive etc'
btrfs property set -f -ts $(readlink -m ${bttrfs_dir}/deployments/primary_a/rootfs) ro true ||
cleanup_and_quit 'Failed to lock root'
# Cleanup etc image
rm $(readlink -m ${bttrfs_dir}/cache/${data[0]}-etc.img)
# Overlay customizations to etc
# TODO: overlay here if enabled in config file
# Extract the var image if not yet extracted
printf "\e[1;34m-->\e[0m\e[1m Writing var\e[0m\n"
[[ ! -e $(readlink -m ${bttrfs_dir}/cache/${data[0]}-var.img) ]] &&
tar -xf $(readlink -m ${bttrfs_dir}/cache/${data[0]}.tar.${data[1]}) -C $(readlink -m ${bttrfs_dir}/cache/) "${data[0]}-var.img" ||
cleanup_and_quit 'failed to extract etc'
# Write the var image
btrfs receive -f $(readlink -m ${bttrfs_dir}/cache/${data[0]}-var.img) $(readlink -m ${bttrfs_dir}/shared/) ||
cleanup_and_quit 'Failed to receive var'
# Make var writable
btrfs property set -f -ts $(readlink -m ${bttrfs_dir}/shared/var) ro false ||
cleanup_and_quit 'Failed to unlock var'
}