[pve-devel] [PATCH pve-kernel-meta v2 3/4] proxmox-boot: add kernel next-boot command
Fabian Grünbichler
f.gruenbichler at proxmox.com
Thu Feb 10 11:58:10 CET 2022
On February 4, 2022 7:45 pm, Stoiko Ivanov wrote:
> by setting the desired version in a dedicated file, which is used
> by the systemd service as condition for removing it and refreshing
> upon reboot
>
> Signed-off-by: Stoiko Ivanov <s.ivanov at proxmox.com>
> ---
> bin/proxmox-boot-tool | 34 +++++++++++++++++------
> debian/pve-kernel-helper.install | 1 +
> debian/rules | 3 ++
> proxmox-boot/Makefile | 4 +++
> proxmox-boot/functions | 3 ++
> proxmox-boot/proxmox-boot-cleanup.service | 13 +++++++++
> proxmox-boot/zz-proxmox-boot | 3 ++
> 7 files changed, 53 insertions(+), 8 deletions(-)
> create mode 100644 proxmox-boot/proxmox-boot-cleanup.service
>
> diff --git a/bin/proxmox-boot-tool b/bin/proxmox-boot-tool
> index 31342a6..5d878f6 100755
> --- a/bin/proxmox-boot-tool
> +++ b/bin/proxmox-boot-tool
> @@ -299,8 +299,9 @@ usage() {
> warn " $0 init <partition>"
> warn " $0 clean [--dry-run]"
> warn " $0 refresh [--hook <name>]"
> - warn " $0 kernel <add|remove|pin> <kernel-version>"
> - warn " $0 kernel <list|unpin>"
> + warn " $0 kernel <add|remove|pin|next-boot> <kernel-version>"
> + warn " $0 kernel list"
> + warn " $0 kernel unpin [--next-boot]"
> warn " $0 status [--quiet]"
> warn " $0 help"
> }
> @@ -322,16 +323,20 @@ help() {
> echo ""
> echo " refresh all configured EFI system partitions. Use --hook to only run the specified hook, omit to run all."
> echo ""
> - echo "USAGE: $0 kernel <add|remove|pin> <kernel-version>"
> + echo "USAGE: $0 kernel <add|remove|pin|next-boot> <kernel-version>"
> echo ""
> echo " add/remove pve-kernel with ABI <kernel-version> to list of synced kernels, in addition to automatically selected ones."
> echo " pin pve-kernel with ABI <kernel-version> sets it as the default entry to be booted."
> + echo " next-boot pve-kernel with ABI <kernel-version> sets the kernel version for the next boot."
> echo " NOTE: you need to manually run 'refresh' once you're finished with adding/removing/pinning kernels from the list"
> echo ""
> - echo "USAGE: $0 kernel <list|unpin>"
> + echo "USAGE: $0 kernel list"
> echo ""
> echo " list kernel versions currently selected for inclusion on ESPs."
> - echo " unpin sets the latest kernel as the default entry (undoes a previous pin)"
> + echo ""
> + echo "USAGE: $0 kernel unpin [--next-boot]"
> + echo ""
> + echo " unpin removes pinned and next-boot kernel settings. Use --next-boot to only remove a next-boot setting."
> echo ""
> echo "USAGE: $0 status [--quiet]"
> echo ""
> @@ -400,6 +405,7 @@ status() {
>
> pin_kernel() {
> ver="$1"
> + pin_file="$2"
>
> if [ -z "$ver" ]; then
> warn "E: <kernel-version> is mandatory"
> @@ -407,17 +413,25 @@ pin_kernel() {
> exit 1
> fi
>
> + if [ -z "$pin_file" ]; then
> + pin_file="$PINNED_KERNEL_CONF"
> + fi
> +
> if [ ! -e "/boot/vmlinuz-$ver" ]; then
> warn "E: no kernel image found in /boot for '$ver', not setting default."
> exit 1
> fi
> - echo "$ver" > "$PINNED_KERNEL_CONF"
> + echo "$ver" > "$pin_file"
> echo "Set kernel '$ver' $PINNED_KERNEL_CONF. Use the 'refresh' command to update the ESPs."
this message is now wrong?
> }
>
> unpin_kernel() {
> - rm -f "$PINNED_KERNEL_CONF"
> - echo "Removed $PINNED_KERNEL_CONF. Use the 'refresh' command to update the ESPs."
> + rm -f "$NEXT_BOOT_PIN"
> + echo "Removed $NEXT_BOOT_PIN. Use the 'refresh' command to update the ESPs."
> + if [ -z "$1" ]; then
$1 has never been checked to be '--next-boot', so this can easily be
misused (e.g., someone not reading the docs thinking 'kernel unpin $foo'
is the reverse of 'kernel pin $foo'). might warrant a check below?
> + rm -f "$PINNED_KERNEL_CONF"
> + echo "Removed $PINNED_KERNEL_CONF. Use the 'refresh' command to update the ESPs."
> + fi
> }
>
> if [ -z "$1" ]; then
> @@ -496,6 +510,10 @@ case "$1" in
> unpin_kernel "$2"
here ^
> exit 0
> ;;
> + 'next-boot')
> + pin_kernel "$2" "${NEXT_BOOT_PIN}"
> + exit 0
> + ;;
> *)
> warn "E: invalid 'kernel' subcommand '$cmd'."
> warn ""
> diff --git a/debian/pve-kernel-helper.install b/debian/pve-kernel-helper.install
> index 5f264aa..33170fb 100644
> --- a/debian/pve-kernel-helper.install
> +++ b/debian/pve-kernel-helper.install
> @@ -2,6 +2,7 @@ etc/grub.d/000_proxmox_boot_header
> etc/kernel/postinst.d/*
> etc/kernel/postrm.d/*
> etc/initramfs/post-update.d/proxmox-boot-sync
> +lib/systemd/system/proxmox-boot-cleanup.service
> usr/sbin/proxmox-boot-tool
> usr/sbin/grub-install
> usr/share/pve-kernel-helper/scripts/functions
> diff --git a/debian/rules b/debian/rules
> index 58f7f7d..3dd1bc8 100755
> --- a/debian/rules
> +++ b/debian/rules
> @@ -12,5 +12,8 @@ debian/control: $(wildcard debian/*.in)
> %:
> dh $@
>
> +override_dh_installsystemd:
> + dh_installsystemd --no-start
> +
> .PHONY: build clean
> build clean:
> diff --git a/proxmox-boot/Makefile b/proxmox-boot/Makefile
> index effd726..2b0685d 100644
> --- a/proxmox-boot/Makefile
> +++ b/proxmox-boot/Makefile
> @@ -2,12 +2,14 @@ KERNEL_HOOKSCRIPTS = proxmox-auto-removal zz-proxmox-boot
> INITRAMFS_HOOKSCRIPTS = proxmox-boot-sync
> SHARE_FILES = functions
> GRUB_CFG_SNIPPET = 000_proxmox_boot_header
> +SYSTEMD_SERVICES = proxmox-boot-cleanup.service
>
> POSTINSTHOOKDIR = ${DESTDIR}/etc/kernel/postinst.d
> POSTRMHOOKDIR = ${DESTDIR}/etc/kernel/postrm.d
> POSTINITRAMFSHOOKDIR = ${DESTDIR}/etc/initramfs/post-update.d
> SHARE_SCRIPTDIR = ${DESTDIR}/usr/share/pve-kernel-helper/scripts
> GRUB_CFG_DIR = ${DESTDIR}/etc/grub.d
> +SERVICE_DIR = ${DESTDIR}/lib/systemd/system
>
> .PHONY: all
> all:
> @@ -23,6 +25,8 @@ install:
> install -m 0755 ${SHARE_FILES} ${SHARE_SCRIPTDIR}
> install -d ${GRUB_CFG_DIR}
> install -m 0755 ${GRUB_CFG_SNIPPET} ${GRUB_CFG_DIR}
> + install -d ${SERVICE_DIR}
> + install -m 0644 ${SYSTEMD_SERVICES} ${SERVICE_DIR}
>
> .PHONY: clean distclean
> distclean:
> diff --git a/proxmox-boot/functions b/proxmox-boot/functions
> index d97a7a1..b1a10a5 100755
> --- a/proxmox-boot/functions
> +++ b/proxmox-boot/functions
> @@ -6,6 +6,7 @@ ESPTYPE='c12a7328-f81f-11d2-ba4b-00a0c93ec93b'
>
> MANUAL_KERNEL_LIST="/etc/kernel/pve-efiboot-manual-kernels"
> PINNED_KERNEL_CONF="/etc/kernel/proxmox-boot-pin"
> +NEXT_BOOT_PIN="/etc/kernel/next-boot-pin"
>
> MOUNTROOT="${TMPDIR:-/var/tmp}/espmounts"
> # relative to the ESP mountpoint
> @@ -60,6 +61,7 @@ kernel_keep_versions() {
> fi
>
> pinned_kernel="$(get_first_line "$PINNED_KERNEL_CONF")"
> + nextboot_kernel="$(get_first_line "$NEXT_BOOT_PIN")"
>
> kernels="$(cat <<-EOF
> $running_version
> @@ -69,6 +71,7 @@ kernel_keep_versions() {
> $series_metapackages
> $oldseries_latest_kernel
> $pinned_kernel
> + $nextboot_kernel
> EOF
> )"
>
> diff --git a/proxmox-boot/proxmox-boot-cleanup.service b/proxmox-boot/proxmox-boot-cleanup.service
> new file mode 100644
> index 0000000..4f9da94
> --- /dev/null
> +++ b/proxmox-boot/proxmox-boot-cleanup.service
> @@ -0,0 +1,13 @@
> +[Unit]
> +Description=Clean up bootloader next-boot setting
> +After=systemd-remount-fs.service
> +ConditionPathExists=/etc/kernel/next-boot-pin
> +
> +[Service]
> +Type=oneshot
> +RemainAfterExit=yes
> +ExecStart=/usr/sbin/proxmox-boot-tool kernel unpin --next-boot
> +ExecStart=/usr/sbin/proxmox-boot-tool refresh
> +
> +[Install]
> +WantedBy=multi-user.target
> diff --git a/proxmox-boot/zz-proxmox-boot b/proxmox-boot/zz-proxmox-boot
> index 7958a5d..5fe16a6 100755
> --- a/proxmox-boot/zz-proxmox-boot
> +++ b/proxmox-boot/zz-proxmox-boot
> @@ -93,6 +93,9 @@ update_esp_func() {
>
> pinned_kernel=$(get_first_line "${PINNED_KERNEL_CONF}")
>
> + if [ -e "${NEXT_BOOT_PIN}" ]; then
> + pinned_kernel=$(get_first_line "${NEXT_BOOT_PIN}")
> + fi
> if [ -d /sys/firmware/efi ]; then
> set_systemd_boot_default "${mountpoint}" "${pinned_kernel}"
> remove_old_kernels_efi "${mountpoint}"
> --
> 2.30.2
>
>
>
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