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2 Commits
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b17e7bd6a1 | ||
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b8325cf134 |
@@ -2,67 +2,39 @@
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#
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#
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#########################################################################################################################################################################
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# Written by: Antynea #
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# BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt #
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# #
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# Purpose: Include btrfs snapshots at boot options (grub-menu). #
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# #
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# What this script does: #
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# Simple rollback using snapshots you made previously. #
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# - Automatically List snapshots existing on root partition (btrfs). #
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# - Automatically Detect if "/boot" is in separate partition. #
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# - Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots. (For custon name, see below.) #
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# - Automatically Create corresponding "menuentry" in grub.cfg , which ensures a very easy rollback. #
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# - Automatically detect snapper and use snapper's snapshot description if available. #
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# #
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# How to use it: #
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# - Add this lines to /etc/default/grub: #
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# #
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# * GRUB_BTRFS_SUBMENUNAME="Arch Linux snapshots" #
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# (Name appearing in the Grub menu.) #
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# * GRUB_BTRFS_PREFIXENTRY="Snapshot:" #
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# (Add a name ahead your snapshots entries in the Grub menu.) #
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# * GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true" #
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# (Show full path snapshot or only name in the Grub menu) #
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# * GRUB_BTRFS_TITLE_FORMAT="p/d/n" #
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# (Custom title, shows/hides p"prefix" d"date" n"name" in the Grub menu, separator "/", custom order available) #
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# * GRUB_BTRFS_LIMIT="50" #
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# (Limit the number of snapshots populated in the GRUB menu.) #
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# * GRUB_BTRFS_SUBVOLUME_SORT="descending" #
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# (Sort the found subvolumes by newest first ("descending") or oldest first ("ascending"). #
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# If "ascending" is chosen then the $GRUB_BTRFS_LIMIT oldest subvolumes will populate the menu.) #
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# * GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="true" #
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# (Show snapshots found during run "grub-mkconfig") #
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# * GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true" #
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# (Show Total of snapshots found during run "grub-mkconfig") #
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# * GRUB_BTRFS_NKERNEL=("vmlinuz-linux") #
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# (Use only if you have custom kernel name or auto-detect failed.) #
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# * GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img") #
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# (Use only if you have custom initramfs name or auto-detect failed.) #
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# * GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img") #
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# (Use only if you have custom intel-ucode or auto-detect failed.) #
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# * GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker" "nosnapshot") #
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# (Ignore specific path during run "grub-mkconfig") #
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# * GRUB_BTRFS_SNAPPER_CONFIG="root" #
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# (Snapper's config name to use) #
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# * GRUB_BTRFS_DISABLE="false" #
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# Disable Grub-btrfs (default=active) #
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# #
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# - Generate grub.cfg (on Arch Linux use grub-mkconfig -o /boot/grub/grub.cfg) #
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# #
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# - grub-btrfs automatically generates snapshots entries. #
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# - You will see it appear different entries (e.g : Snapshot: [2014-02-12 11:24:37] my snapshot name overkill) #
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# #
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# Automatically update grub #
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# If you would like grub to automatically update when Snapper timeline snapshots and cleanups occur, simply install 10-update_grub.conf in the following locations: #
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# - /etc/systemd/system/snapper-timeline.service.d/ #
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# - /etc/systemd/system/snapper-cleanup.service.d/ #
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# Once the configuration files are in place, systemctl daemon-reload should be run to reload the units and make the changes active. #
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# #
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# Special thanks for assistance and contributions: #
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# - My friends #
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# - All contributors on Github #
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# #
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# Written by: Antynea
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# BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
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# Github: https://github.com/Antynea/grub-btrfs
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# #
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# Purpose: Include btrfs snapshots at boot options (grub-menu).
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#
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# What this script does:
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# Simple rollback using snapshots you made previously.
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# - Automatically List snapshots existing on root partition (btrfs).
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# - Automatically Detect if "/boot" is in separate partition.
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# - Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots.
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# - Automatically Create corresponding "menuentry" in grub.cfg , which ensures a very easy rollback.
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# - Automatically detect snapper and use snapper's snapshot description if available.
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#
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# How to customize it:
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# - Refer 41_snapshots-btrfs_config for the list of available options and their default values.
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# - Place your configurations to either /etc/grub.d/41_snapshots-btrfs_config or /etc/default/grub.
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#
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# - Generate grub.cfg (on Arch Linux use grub-mkconfig -o /boot/grub/grub.cfg)
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#
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# - grub-btrfs automatically generates snapshots entries.
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# - You will see it appear different entries (e.g : Snapshot: [2014-02-12 11:24:37] my snapshot name overkill)
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#
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# Automatically update grub
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# If you would like grub to automatically update when Snapper timeline snapshots and cleanups occur, simply install 10-update_grub.conf in the following locations:
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# - /etc/systemd/system/snapper-timeline.service.d/
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# - /etc/systemd/system/snapper-cleanup.service.d/
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# Once the configuration files are in place, systemctl daemon-reload should be run to reload the units and make the changes active.
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#
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# Special thanks for assistance and contributions:
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# - My friends
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# - All contributors on Github
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#
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#########################################################################################################################################################################
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set -e
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@@ -71,10 +43,11 @@ prefix="/usr"
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exec_prefix="/usr"
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datarootdir="/usr/share"
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sysconfdir="/etc"
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grub_btrfs_config="${sysconfdir}/grub.d/41_snapshots-btrfs_config"
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. "${sysconfdir}/default/grub"
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. "$pkgdatadir/grub-mkconfig_lib"
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# . "$datarootdir/grub/grub-mkconfig_lib" # Uncomment if you run "bash -x"
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[[ -f "$grub_btrfs_config" ]] && . "$grub_btrfs_config"
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. "$datarootdir/grub/grub-mkconfig_lib"
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######################################
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### Variables in /etc/default/grub ###
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@@ -182,16 +155,17 @@ make_menu_entries()
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[[ ! -f "${boot_dir}"/"${k}" ]] && continue;
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kversion=${k#*"-"}
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for i in "${name_initramfs[@]}"; do
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prefix_i=${i[@]%%"-"*}
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suffix_i=${i[@]##*"-"}
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if [ -f "${boot_dir}"/"${prefix_i}-${kversion}-${suffix_i}" ]; then i="${i}";
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elif [ -f "${boot_dir}"/"${prefix_i}-${kversion}" ]; then i="${i}";
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elif [ -f "${boot_dir}"/"${prefix_i}-${kversion}.img" ]; then i="${i}";
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elif [ -f "${boot_dir}"/"${prefix_i}-${kversion}.gz" ]; then i="${i}";
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prefix_i=${i%%"-"*}
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suffix_i=${i#*"-"}
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alt_suffix_i=${i##*"-"}
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if [ "${kversion}" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}.img" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}-fallback.img" = "${suffix_i}" ]; then i="${i}";
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elif [ "${kversion}.gz" = "${suffix_i}" ]; then i="${i}";
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else continue ;
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fi
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for u in "${name_microcode[@]}"; do
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if [[ -f "${boot_dir}"/"${u}" && "${i}" != initramfs-linux-fallback.img ]] ; then
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if [[ -f "${boot_dir}"/"${u}" && "${i}" != "${prefix_i}-${kversion}-${alt_suffix_i}" ]] ; then
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entry "
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menuentry '"${k}" & "${i}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
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else
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@@ -212,7 +186,7 @@ make_menu_entries()
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echo 'Loading Snapshot: "${snap_date_time}" "${snap_dir_name}"'
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echo 'Loading Kernel: "${k}" ...'
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linux \"${boot_dir_root_grub}/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=\""${snap_dir_name}"\" ${kernel_parameters}"
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if [[ -f "${boot_dir}"/"${u}" && "${i}" != initramfs-linux-fallback.img ]] ; then
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if [[ -f "${boot_dir}"/"${u}" && "${i}" != "${prefix_i}-${kversion}-${alt_suffix_i}" ]] ; then
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entry "\
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echo 'Loading Microcode & Initramfs: "${u}" "${i}" ...'
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initrd \"${boot_dir_root_grub}/"${u}"\" \"${boot_dir_root_grub}/"${i}"\""
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@@ -394,16 +368,15 @@ path_snapshot()
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title_format()
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{
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case "${title_format}" in
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p/d/n) title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}";;
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p/n/d) title_menu="${prefixentry} ${name_snapshot} ${snap_date_time}";;
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p/d) title_menu="${prefixentry} ${snap_date_time}";;
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p/n) title_menu="${prefixentry} ${name_snapshot}";;
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d/n) title_menu="${snap_date_time} ${name_snapshot}";;
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n/d) title_menu="${name_snapshot} ${snap_date_time}";;
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p) title_menu="${prefixentry}";;
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d) title_menu="${snap_date_time}";;
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n) title_menu="${name_snapshot}";;
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*) printf $"# Warning: GRUB_BTRFS_TITLE_FORMAT=${title_format}, syntax error \n" >&2
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p) title_menu="${prefixentry}";;
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d) title_menu="${snap_date_time}";;
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n) title_menu="${name_snapshot}";;
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*) title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}"
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esac
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}
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@@ -421,7 +394,7 @@ boot_bounded()
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snap_dir_name="$(trim "$snap_dir_name")"
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snap_date_time="$(echo "$item" | cut -d' ' -f1-2)"
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snap_date_time="$(trim "$snap_date_time")"
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boot_dir="$gbgmp/$snap_dir_name/boot"
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# Kernel (Original + custom kernel)
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detect_kernel
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@@ -464,12 +437,12 @@ boot_separate()
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detect_kernel
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if [ -z "${list_kernel}" ]; then print_error "Kernels not found."; fi
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name_kernel=("${list_kernel[@]##*"/"}")
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# Initramfs (Original + custom initramfs)
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detect_initramfs
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if [ -z "${list_initramfs}" ]; then print_error "Initramfs not found."; fi
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name_initramfs=("${list_initramfs[@]##*"/"}")
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# microcode (auto-detect + custom microcode)
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detect_microcode
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name_microcode=("${list_ucode[@]##*"/"}")
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16
41_snapshots-btrfs_config
Normal file
16
41_snapshots-btrfs_config
Normal file
@@ -0,0 +1,16 @@
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#!/usr/bin/env bash
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# GRUB_BTRFS_SUBMENUNAME="Arch Linux snapshots" # Name appearing in the Grub menu
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# GRUB_BTRFS_PREFIXENTRY="Snapshot:" # Add a name ahead your snapshots entries in the Grub menu
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# GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true" # Show full path snapshot or only name in the Grub menu
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# GRUB_BTRFS_TITLE_FORMAT="p/d/n" # Custom title, shows/hides p"prefix" d"date" n"name" in the Grub menu, separator "/", custom order available
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# GRUB_BTRFS_LIMIT="50" # Limit the number of snapshots populated in the GRUB menu
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# GRUB_BTRFS_SUBVOLUME_SORT="descending" # Sort the found subvolumes by newest first ("descending") or oldest first ("ascending") and show $GRUB_BTRFS_LIMIT first entries.
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# GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="true" # Show snapshots found during run "grub-mkconfig"
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# GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true" # Show Total of snapshots found during run "grub-mkconfig"
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# GRUB_BTRFS_NKERNEL=("vmlinuz-linux") # Use only if you have custom kernel name
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# GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img") # Use only if you have custom initramfs name
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# GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img") # Use only if you have custom intel-ucode
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# GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker") # Ignore specific path during run "grub-mkconfig"
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# GRUB_BTRFS_SNAPPER_CONFIG="root" # Snapper's config name to use
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# GRUB_BTRFS_DISABLE="false" # Disable Grub-btrfs
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