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Feature lvm support (#6204)
* using the configured volume group name * added LVM support * ensuring /boot never on LVM volume, created hook to setup root device * preparing root device via extension, not assuming any particular partition for root * using tab spacing * using global parameter to require a boot partition * using boot require, moving cryptroot code to extension * adds crypt image suffix --------- Co-authored-by: rafael <rvalle@privaz.io>
This commit is contained in:
Rafael
@@ -15,6 +15,23 @@ function add_host_dependencies__add_cryptroot_tooling() {
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fi
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}
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function extension_prepare_config__prepare_cryptroot() {
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# Config for cryptroot, a boot partition is required.
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declare -g BOOTPART_REQUIRED=yes
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EXTRA_IMAGE_SUFFIXES+=("-crypt")
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}
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function prepare_root_device__encrypt_root_device(){
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# We encrypt the rootdevice (currently a loop device) and return the new mapped rootdevice
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check_loop_device "$rootdevice"
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display_alert "Encrypting root partition with LUKS..." "cryptsetup luksFormat $rootdevice" ""
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echo -n $CRYPTROOT_PASSPHRASE | cryptsetup luksFormat $CRYPTROOT_PARAMETERS $rootdevice -
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echo -n $CRYPTROOT_PASSPHRASE | cryptsetup luksOpen $rootdevice $ROOT_MAPPER -
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display_alert "Root partition encryption complete." "" "ext"
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# TODO: pass /dev/mapper to Docker
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rootdevice=/dev/mapper/$ROOT_MAPPER # used by `mkfs` and `mount` commands
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}
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function pre_install_kernel_debs__adjust_dropbear_configuration() {
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# Adjust initramfs dropbear configuration
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# Needs to be done before kernel installation, else it won't be in the initrd image
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94
extensions/lvm.sh
Normal file
94
extensions/lvm.sh
Normal file
@@ -0,0 +1,94 @@
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#
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2024 Rafel del Valle <rvalle@privaz.io>
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# This file is a part of the Armbian Build Framework https://github.com/armbian/build/
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#
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# This extension will place the root partition on an LVM volume.
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# It is possible to customise the volume group name and the image is extended to allow
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# for LVM headers
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# In case of failed builds check for leaked logical volumes with "dmsetup list" and
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# remove them with "dmsetup remove"
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# Additional log infomration will be created on lvm.log
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# We will need to create several LVM objects: PV VG VOL on the image from the host
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function add_host_dependencies__lvm_host_deps() {
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declare -g EXTRA_BUILD_DEPS="${EXTRA_BUILD_DEPS} lvm2"
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}
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function extension_prepare_config__lvm_image_suffix() {
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# Add to image suffix.
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EXTRA_IMAGE_SUFFIXES+=("-lvm")
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}
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function extension_prepare_config__prepare_lvm() {
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# Config for lvm, boot partition is required, many bootloaders do not support LVM.
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declare -g BOOTPART_REQUIRED=yes
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declare -g LVM_VG_NAME="${LVM_VG_NAME:-armbivg}"
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declare -g EXTRA_ROOTFS_MIB_SIZE=256
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add_packages_to_image lvm2
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}
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function post_create_partitions__setup_lvm(){
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LOOP=$(losetup -f)
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[[ -z $LOOP ]] && exit_with_error "Unable to find free loop device"
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check_loop_device "$LOOP"
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losetup $LOOP ${SDCARD}.raw
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partprobe $LOOP
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# the partition to setup LVM on is defined as rootpart
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local lvmpart=${rootpart}
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local lvmdev=${LOOP}p${lvmpart}
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display_alert "LVM will be on Partition ${lvmpart}, thats ${lvmdev}" "${EXTENSION}" "info"
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# Setup LVM on the partition, ROOTFS
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parted -s ${SDCARD}.raw -- set ${lvmpart} lvm on
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display_alert "LVM Partition table created" "${EXTENSION}" "info"
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parted -s ${SDCARD}.raw -- print >> "${DEST}"/${LOG_SUBPATH}/lvm.log 2>&1
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# Caculate the required volume size
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declare -g -i rootfs_size
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rootfs_size=$(du --apparent-size -sm "${SDCARD}"/ | cut -f1) # MiB
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display_alert "Current rootfs size" "$rootfs_size MiB" "info"
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volsize=$(bc -l <<< "scale=0; ((($rootfs_size * 1.30) / 1 + 0) / 4 + 1) * 4")
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display_alert "Root volume size" "$volsize MiB" "info"
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# Create the PV VG and VOL
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display_alert "LVM Creating VG" "${SDCARD}.raw" "info"
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check_loop_device ${lvmdev}
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pvcreate ${lvmdev}
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vgcreate ${LVM_VG_NAME} ${lvmdev}
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# Note that devices wont come up automatically inside docker
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lvcreate -Zn --name root --size ${volsize}M ${LVM_VG_NAME}
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vgmknodes
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lvs >> "${DEST}"/${LOG_SUBPATH}/lvm.log 2>&1
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vgchange -a n ${LVM_VG_NAME}
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losetup -d ${LOOP}
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display_alert "LVM created volume group" "${EXTENSION}" "info"
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}
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function prepare_root_device__create_volume_group(){
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display_alert "Using LVM root" "${EXTENSION}" "info"
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vgscan
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vgchange -a y ${LVM_VG_NAME}
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rootdevice=/dev/mapper/${LVM_VG_NAME}-root
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display_alert "Root device is ${rootdevice}" "${EXTENSION}" "info"
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}
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function format_partitions__format_lvm(){
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# Label the root volume
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e2label /dev/mapper/${LVM_VG_NAME}-root armbi_root
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blkid | grep ${LVM_VG_NAME} >> "${DEST}"/${LOG_SUBPATH}/lvm.log 2>&1
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display_alert "LVM labeled partitions" "${EXTENSION}" "info"
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}
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function post_umount_final_image__close_lvm(){
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# Deactivat the Volume Group
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vgchange -a n ${LVM_VG_NAME}
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display_alert "LVM deactivated volume group" "${EXTENSION}" "info"
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}
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@@ -98,7 +98,8 @@ function prepare_partitions() {
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local uefipart=$((next++))
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fi
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# Check if we need boot partition
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if [[ $BOOTSIZE != "0" && ( -n $BOOTFS_TYPE || $ROOTFS_TYPE != ext4 || $CRYPTROOT_ENABLE == yes ) ]]; then
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# Specialized storage extensions like cryptroot or lvm may require a boot partition
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if [[ $BOOTSIZE != "0" && ( -n $BOOTFS_TYPE || $ROOTFS_TYPE != ext4 || $BOOTPART_REQUIRED == yes ) ]]; then
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local bootpart=$((next++))
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local bootfs=${BOOTFS_TYPE:-ext4}
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[[ -z $BOOTSIZE || $BOOTSIZE -le 8 ]] && BOOTSIZE=${DEFAULT_BOOTSIZE}
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@@ -239,15 +240,10 @@ function prepare_partitions() {
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if [[ -n $rootpart ]]; then
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local rootdevice="${LOOP}p${rootpart}"
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if [[ $CRYPTROOT_ENABLE == yes ]]; then
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check_loop_device "$rootdevice"
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display_alert "Encrypting root partition with LUKS..." "cryptsetup luksFormat $rootdevice" ""
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echo -n $CRYPTROOT_PASSPHRASE | cryptsetup luksFormat $CRYPTROOT_PARAMETERS $rootdevice -
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echo -n $CRYPTROOT_PASSPHRASE | cryptsetup luksOpen $rootdevice $ROOT_MAPPER -
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display_alert "Root partition encryption complete." "" "ext"
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# TODO: pass /dev/mapper to Docker
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rootdevice=/dev/mapper/$ROOT_MAPPER # used by `mkfs` and `mount` commands
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fi
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call_extension_method "prepare_root_device" <<- 'PREPARE_ROOT_DEVICE'
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*Specialized storage extensions typically transform the root device into a mapped device and should hook in here *
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At this stage ${rootdevice} has been defined pointing to a loop device partition. Extensions that map the root device must update rootdevice accordingly.
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PREPARE_ROOT_DEVICE
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check_loop_device "$rootdevice"
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display_alert "Creating rootfs" "$ROOTFS_TYPE on $rootdevice"
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