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@@ -2,79 +2,59 @@
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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="100" #
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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_CREATE_ONLY_HARMONIZED_ENTRIES="false" #
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# (Create entries with matching version number instead of all possible combinations of kernel and initramfs) #
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# * GRUB_BTRFS_SNAPPER_CONFIG="root" #
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# (Snapper's config name to use) #
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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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# Written by: Antynea
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# BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
|
||||
# Github: https://github.com/Antynea/grub-btrfs
|
||||
# #
|
||||
# Purpose: Include btrfs snapshots at boot options (grub-menu).
|
||||
#
|
||||
# What this script does:
|
||||
# Simple rollback using snapshots you made previously.
|
||||
# - Automatically List snapshots existing on root partition (btrfs).
|
||||
# - Automatically Detect if "/boot" is in separate partition.
|
||||
# - Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots.
|
||||
# - Automatically Create corresponding "menuentry" in grub.cfg , which ensures a very easy rollback.
|
||||
# - Automatically detect snapper and use snapper's snapshot description if available.
|
||||
#
|
||||
# How to customize it:
|
||||
# - 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.
|
||||
#
|
||||
# - Generate grub.cfg (on Arch Linux use grub-mkconfig -o /boot/grub/grub.cfg)
|
||||
#
|
||||
# - grub-btrfs automatically generates snapshots entries.
|
||||
# - You will see it appear different entries (e.g : Snapshot: [2014-02-12 11:24:37] my snapshot name overkill)
|
||||
#
|
||||
# Automatically update grub
|
||||
# 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:
|
||||
# - /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
|
||||
# - All contributors on Github
|
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#
|
||||
#########################################################################################################################################################################
|
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|
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set -e
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|
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#prefix="/usr"
|
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#exec_prefix="${prefix}"
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prefix="/usr"
|
||||
exec_prefix="/usr"
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datarootdir="/usr/share"
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#datadir="${datarootdir}"
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sysconfdir="/etc"
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grub_btrfs_config="${sysconfdir}/grub.d/41_snapshots-btrfs_config"
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. "${datarootdir}/grub/grub-mkconfig_lib"
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. "${sysconfdir}/default/grub"
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[[ -f "$grub_btrfs_config" ]] && . "$grub_btrfs_config"
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. "$datarootdir/grub/grub-mkconfig_lib"
|
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|
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######################################
|
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### Variables in /etc/default/grub ###
|
||||
######################################
|
||||
## Disable Grub-btrfs (default=active)
|
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grub_btrfs_disable=${GRUB_BTRFS_DISABLE:-"false"}
|
||||
[[ "${grub_btrfs_disable}" == "true" ]] && exit 0
|
||||
## Submenu name
|
||||
submenuname=${GRUB_BTRFS_SUBMENUNAME:-"Arch Linux snapshots"}
|
||||
## Prefix entry
|
||||
@@ -89,8 +69,8 @@ nkernel=("${GRUB_BTRFS_NKERNEL[@]}")
|
||||
ninit=("${GRUB_BTRFS_NINIT[@]}")
|
||||
## Microcode(s) name(s)
|
||||
microcode=("${GRUB_BTRFS_INTEL_UCODE[@]}")
|
||||
## Limit to show in the Grub menu
|
||||
limit_snap_show="${GRUB_BTRFS_LIMIT:-100}"
|
||||
## Limit snapshots to show in the Grub menu
|
||||
limit_snap_show="${GRUB_BTRFS_LIMIT:-50}"
|
||||
## How to sort snapshots list
|
||||
snap_list_sort=${GRUB_BTRFS_SUBVOLUME_SORT:-"descending"}
|
||||
case "${snap_list_sort}" in
|
||||
@@ -103,12 +83,9 @@ show_snap_found=${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}
|
||||
show_total_snap_found=${GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND:-"true"}
|
||||
## Ignore specific path during run "grub-mkconfig"
|
||||
ignore_specific_path=("${GRUB_BTRFS_IGNORE_SPECIFIC_PATH[@]}")
|
||||
## create only entries with harmonized version numbers
|
||||
harmonized_entries=${GRUB_BTRFS_CREATE_ONLY_HARMONIZED_ENTRIES:-"false"}
|
||||
## snapper's config name
|
||||
snapper_config=${GRUB_BTRFS_SNAPPER_CONFIG:-"root"}
|
||||
|
||||
|
||||
########################
|
||||
### variables script ###
|
||||
########################
|
||||
@@ -131,123 +108,99 @@ gbgmp=$(mktemp -d)
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||||
CLASS="--class snapshots --class gnu-linux --class gnu --class os"
|
||||
## save IFS
|
||||
oldIFS=$IFS
|
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## boot_dir (auto-detect if /boot is separate partition or not)
|
||||
boot_dir()
|
||||
|
||||
|
||||
######################
|
||||
### Error Handling ###
|
||||
######################
|
||||
print_error()
|
||||
{
|
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boot_dir="$gbgmp/$snap_dir_name/boot"
|
||||
[[ "$root_uuid" != "$boot_uuid" ]] && boot_dir="/boot"
|
||||
echo "$boot_dir"
|
||||
local arg="$@"
|
||||
local nothing_to_do="If you think an error has occurred , please file a bug report at \" https://github.com/Antynea/grub-btrfs \"\n# Nothing to do. Abort.\n###### - Grub-btrfs: Snapshot detection ended - ######\n"
|
||||
printf "# ${arg}\n# ${nothing_to_do}" >&2 ;
|
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exit 0
|
||||
}
|
||||
|
||||
|
||||
test_btrfs()
|
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{
|
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set +e
|
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type btrfs >/dev/null 2>&1
|
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if [[ $? -ne 0 ]]; then
|
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print_error "This script only supports snapshots of the btrfs filesystem, make sure you have btrfs-progs on your system."
|
||||
fi
|
||||
set -e
|
||||
}
|
||||
##############
|
||||
### Script ###
|
||||
##############
|
||||
|
||||
### BEGIN auto detect ###
|
||||
|
||||
## Create entry
|
||||
entry() {
|
||||
echo "$@" >> "/boot/grub/grub-btrfs.cfg"
|
||||
# local arg="$@"
|
||||
# echo "${arg}" >> "/boot/grub/grub-btrfs.cfg"
|
||||
# cat << EOF >> "/boot/grub/grub-btrfs.cfg"
|
||||
# ${arg}
|
||||
# EOF
|
||||
}
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|
||||
## menu entries
|
||||
snapshots_entry()
|
||||
make_menu_entries()
|
||||
{
|
||||
## \" required for snap,kernels,init,microcode with space in their name
|
||||
echo " submenu '$title_menu' {
|
||||
submenu '---> $title_menu <---' { echo }
|
||||
"
|
||||
entry "submenu '$title_menu' {
|
||||
submenu '---> $title_menu <---' { echo }"
|
||||
for k in "${name_kernel[@]}"; do
|
||||
[[ ! -f "${boot_dir}"/"${k}" ]] && continue;
|
||||
kversion=${k#*"-"}
|
||||
for i in "${name_initramfs[@]}"; do
|
||||
prefix_i=${i%%"-"*}
|
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suffix_i=${i#*"-"}
|
||||
alt_suffix_i=${i##*"-"}
|
||||
if [ "${kversion}" = "${suffix_i}" ]; then i="${i}";
|
||||
elif [ "${kversion}.img" = "${suffix_i}" ]; then i="${i}";
|
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elif [ "${kversion}-fallback.img" = "${suffix_i}" ]; then i="${i}";
|
||||
elif [ "${kversion}.gz" = "${suffix_i}" ]; then i="${i}";
|
||||
else continue ;
|
||||
fi
|
||||
for u in "${name_microcode[@]}"; do
|
||||
if [ -f "$(boot_dir)"/"${u}" ] ; then
|
||||
echo "\
|
||||
menuentry '"${k}" & "${i}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
else
|
||||
echo "\
|
||||
menuentry '"${k}" & "${i}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
fi
|
||||
echo "\
|
||||
$(save_default_entry)
|
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if [ x\$feature_all_video_module = xy ]; then
|
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insmod all_video
|
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fi
|
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set gfxpayload=keep
|
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insmod ${boot_fs}
|
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if [ x\$feature_platform_search_hint = xy ]; then
|
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search --no-floppy --fs-uuid --set=root ${hs_boot} ${boot_uuid}
|
||||
else
|
||||
search --no-floppy --fs-uuid --set=root ${boot_uuid}
|
||||
fi
|
||||
echo 'Loading Snapshot: "${snap_date_time}" "${snap_dir_name}"'
|
||||
echo 'Loading Kernel: "${k}" ...'
|
||||
linux \"${boot_dir_real_path}/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=\""${snap_dir_name}"\" ${kernel_parameters}"
|
||||
if [ -f "$(boot_dir)"/"${u}" ] ; then
|
||||
echo "\
|
||||
echo 'Loading Microcode & Initramfs: "${u}" "${i}" ...'
|
||||
initrd \"${boot_dir_real_path}/"${u}"\" \"${boot_dir_real_path}/"${i}"\""
|
||||
else
|
||||
echo "\
|
||||
echo 'Loading Initramfs: "${i}" ...'
|
||||
initrd \"${boot_dir_real_path}/"${i}"\""
|
||||
fi
|
||||
echo " }"
|
||||
if [[ -f "${boot_dir}"/"${u}" && "${i}" != "${prefix_i}-${kversion}-${alt_suffix_i}" ]] ; then
|
||||
entry "
|
||||
menuentry '"${k}" & "${i}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
else
|
||||
entry "
|
||||
menuentry '"${k}" & "${i}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
fi
|
||||
entry "\
|
||||
if [ x\$feature_all_video_module = xy ]; then
|
||||
insmod all_video
|
||||
fi
|
||||
set gfxpayload=keep
|
||||
insmod ${boot_fs}
|
||||
if [ x\$feature_platform_search_hint = xy ]; then
|
||||
search --no-floppy --fs-uuid --set=root ${hs_boot} ${boot_uuid}
|
||||
else
|
||||
search --no-floppy --fs-uuid --set=root ${boot_uuid}
|
||||
fi
|
||||
echo 'Loading Snapshot: "${snap_date_time}" "${snap_dir_name}"'
|
||||
echo 'Loading Kernel: "${k}" ...'
|
||||
linux \"${boot_dir_root_grub}/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=\""${snap_dir_name}"\" ${kernel_parameters}"
|
||||
if [[ -f "${boot_dir}"/"${u}" && "${i}" != "${prefix_i}-${kversion}-${alt_suffix_i}" ]] ; then
|
||||
entry "\
|
||||
echo 'Loading Microcode & Initramfs: "${u}" "${i}" ...'
|
||||
initrd \"${boot_dir_root_grub}/"${u}"\" \"${boot_dir_root_grub}/"${i}"\""
|
||||
else
|
||||
entry "\
|
||||
echo 'Loading Initramfs: "${i}" ...'
|
||||
initrd \"${boot_dir_root_grub}/"${i}"\""
|
||||
fi
|
||||
entry " }"
|
||||
count_warning_menuentries=$((1+$count_warning_menuentries))
|
||||
done
|
||||
done
|
||||
done
|
||||
echo " }"
|
||||
}
|
||||
|
||||
harmonized_snapshots_entry()
|
||||
{
|
||||
## \" required for snap,kernels,init,microcode with space in their name
|
||||
echo " submenu '$title_menu' {
|
||||
submenu '---> $title_menu <---' { echo }
|
||||
"
|
||||
for k in "${name_kernel[@]}"; do
|
||||
version=${k#vmlinuz-}
|
||||
i=""
|
||||
if [ -f "$(boot_dir)"/initramfs-"${version}".img ]; then
|
||||
i=initramfs-${version}.img
|
||||
else
|
||||
if [ -f "$(boot_dir)"/initrd.img-"${version}" ]; then
|
||||
i=initrd.img-${version}
|
||||
fi
|
||||
fi
|
||||
for u in "${name_microcode[@]}"; do
|
||||
if [ -f "$(boot_dir)"/"${u}" ] ; then
|
||||
echo "\
|
||||
menuentry '"${k}" & "${i}" & "${u}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
else
|
||||
echo "\
|
||||
menuentry '"${k}" & "${i}"' ${CLASS} "\$menuentry_id_option" 'gnulinux-snapshots-$boot_uuid'{"
|
||||
fi
|
||||
echo "\
|
||||
$(save_default_entry)
|
||||
if [ x\$feature_all_video_module = xy ]; then
|
||||
insmod all_video
|
||||
fi
|
||||
set gfxpayload=keep
|
||||
insmod ${boot_fs}
|
||||
if [ x\$feature_platform_search_hint = xy ]; then
|
||||
search --no-floppy --fs-uuid --set=root ${hs_boot} ${boot_uuid}
|
||||
else
|
||||
search --no-floppy --fs-uuid --set=root ${boot_uuid}
|
||||
fi
|
||||
echo 'Loading Snapshot: "${snap_date_time}" "${snap_dir_name}"'
|
||||
echo 'Loading Kernel: "${k}" ...'
|
||||
linux \"${boot_dir_real_path}/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=\""${snap_dir_name}"\" ${kernel_parameters}"
|
||||
if [ -f "$(boot_dir)"/"${i}" ] ; then
|
||||
if [ -f "$(boot_dir)"/"${u}" ] ; then
|
||||
echo "\
|
||||
echo 'Loading Microcode & Initramfs: "${u}" "${i}" ...'
|
||||
initrd \"${boot_dir_real_path}/"${u}"\" \"${boot_dir_real_path}/"${i}"\""
|
||||
else
|
||||
echo "\
|
||||
echo 'Loading Initramfs: "${i}" ...'
|
||||
initrd \"${boot_dir_real_path}/"${i}"\""
|
||||
fi
|
||||
fi
|
||||
echo " }"
|
||||
done
|
||||
done
|
||||
echo " }"
|
||||
entry "}"
|
||||
}
|
||||
|
||||
## Trim a string from leading and trailing whitespaces
|
||||
@@ -281,10 +234,21 @@ snapshot_list()
|
||||
IFS=$oldIFS
|
||||
snap=($snap)
|
||||
local snap_path_name=${snap[@]:13:${#snap[@]}}
|
||||
|
||||
# Discard deleted snapshots
|
||||
if [ "$snap_path_name" = "DELETED" ]; then continue; fi
|
||||
[[ ${snap_path_name%%"/"*} == "<FS_TREE>" ]] && snap_path_name=${snap_path_name#*"/"}
|
||||
|
||||
# ignore specific path during run "grub-mkconfig"
|
||||
if [ ! -z "${ignore_specific_path}" ] ; then
|
||||
for isp in ${ignore_specific_path[@]} ; do
|
||||
[[ "${snap_path_name}" == "${isp}"/* ]] && continue 2;
|
||||
done
|
||||
fi
|
||||
|
||||
# detect if /boot directory exists
|
||||
[[ ! -d "$gbgmp/$snap_path_name/boot" ]] && continue;
|
||||
|
||||
local id="${snap_path_name//[!0-9]}" # brutal way to get id: remove everything non-numeric
|
||||
ids+=("$id")
|
||||
|
||||
@@ -330,15 +294,19 @@ snapshot_list()
|
||||
## Detect kernels in "/boot"
|
||||
detect_kernel()
|
||||
{
|
||||
## Arch original kernel (auto-detect)
|
||||
for akernel in "$(boot_dir)"/vmlinuz-* ; do
|
||||
list_kernel+=("$akernel")
|
||||
list_kernel=()
|
||||
# Original kernel (auto-detect)
|
||||
for okernel in "${boot_dir}"/vmlinuz-* \
|
||||
"${boot_dir}"/vmlinux-* \
|
||||
"${boot_dir}"/kernel-* ; do
|
||||
[[ ! -f "${okernel}" ]] && continue;
|
||||
list_kernel+=("$okernel")
|
||||
done
|
||||
|
||||
## Custom name kernel in GRUB_BTRFS_NKERNEL
|
||||
# Custom name kernel in GRUB_BTRFS_NKERNEL
|
||||
if [ ! -z "${nkernel}" ] ; then
|
||||
for ckernel in "${nkernel[@]}" ; do
|
||||
[[ ! -f /"$(boot_dir)"/"${ckernel}" ]] && continue;
|
||||
for ckernel in "${boot_dir}/${nkernel[@]}" ; do
|
||||
[[ ! -f "${ckernel}" ]] && continue;
|
||||
list_kernel+=("$ckernel")
|
||||
done
|
||||
fi
|
||||
@@ -347,15 +315,21 @@ detect_kernel()
|
||||
## Detect initramfs in "/boot"
|
||||
detect_initramfs()
|
||||
{
|
||||
## Arch original initramfs (auto-detect)
|
||||
for ainitramfs in "$(boot_dir)"/initramfs-* ; do
|
||||
list_initramfs+=("$ainitramfs")
|
||||
list_initramfs=()
|
||||
# Original initramfs (auto-detect)
|
||||
for oinitramfs in "${boot_dir}"/initrd.img-* \
|
||||
"${boot_dir}"/initrd-*.img \
|
||||
"${boot_dir}"/initrd-*.gz \
|
||||
"${boot_dir}"/initramfs-*.img \
|
||||
"${boot_dir}"/initramfs-*.gz ; do
|
||||
[[ ! -f "${oinitramfs}" ]] && continue;
|
||||
list_initramfs+=("$oinitramfs")
|
||||
done
|
||||
|
||||
## Custom name initramfs in GRUB_BTRFS_NINIT
|
||||
|
||||
# Custom name initramfs in GRUB_BTRFS_NINIT
|
||||
if [ ! -z "$ninit" ] ; then
|
||||
for cinitramfs in "${ninit[@]}" ; do
|
||||
[[ ! -f /"$(boot_dir)"/"${cinitramfs}" ]] && continue;
|
||||
for cinitramfs in "${boot_dir}/${ninit[@]}" ; do
|
||||
[[ ! -f "${cinitramfs}" ]] && continue;
|
||||
list_initramfs+=("$cinitramfs")
|
||||
done
|
||||
fi
|
||||
@@ -364,18 +338,21 @@ detect_initramfs()
|
||||
## Detect microcode in "/boot"
|
||||
detect_microcode()
|
||||
{
|
||||
## Arch original intel microcode
|
||||
for aucode in "$(boot_dir)"/intel-ucode.img ; do
|
||||
list_ucode+=("$aucode")
|
||||
list_ucode=()
|
||||
# Original intel microcode
|
||||
for oiucode in "${boot_dir}"/intel-ucode.img ; do
|
||||
[[ ! -f "${oiucode}" ]] && continue;
|
||||
list_ucode+=("$oiucode")
|
||||
done
|
||||
|
||||
## Custom name microcode in GRUB_BTRFS_INTEL_UCODE
|
||||
# Custom name microcode in GRUB_BTRFS_INTEL_UCODE
|
||||
if [ ! -z "$microcode" ] ; then
|
||||
for cucode in "${microcode[@]}" ; do
|
||||
[[ ! -f /"$(boot_dir)"/"${cucode}" ]] && continue
|
||||
for cucode in "${boot_dir}/${microcode[@]}" ; do
|
||||
[[ ! -f "${cucode}" ]] && continue
|
||||
list_ucode+=("$cucode")
|
||||
done
|
||||
fi
|
||||
if [ -z "${list_ucode}" ]; then list_ucode=(x); fi
|
||||
}
|
||||
|
||||
## Show full path snapshot or only name
|
||||
@@ -391,103 +368,156 @@ path_snapshot()
|
||||
title_format()
|
||||
{
|
||||
case "${title_format}" in
|
||||
p/d/n) title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}";;
|
||||
p/n/d) title_menu="${prefixentry} ${name_snapshot} ${snap_date_time}";;
|
||||
p/d) title_menu="${prefixentry} ${snap_date_time}";;
|
||||
p/n) title_menu="${prefixentry} ${name_snapshot}";;
|
||||
d/n) title_menu="${snap_date_time} ${name_snapshot}";;
|
||||
n/d) title_menu="${name_snapshot} ${snap_date_time}";;
|
||||
p) title_menu="${prefixentry}";;
|
||||
d) title_menu="${snap_date_time}";;
|
||||
n) title_menu="${name_snapshot}";;
|
||||
*) gettext_printf $"# Warning: GRUB_BTRFS_TITLE_FORMAT=${title_format}, syntax error \n" >&2
|
||||
p) title_menu="${prefixentry}";;
|
||||
d) title_menu="${snap_date_time}";;
|
||||
n) title_menu="${name_snapshot}";;
|
||||
*) title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}"
|
||||
esac
|
||||
}
|
||||
|
||||
## List of kernels, initramfs and microcode in snapshots
|
||||
list_kernels_initramfs()
|
||||
boot_bounded()
|
||||
{
|
||||
# Initialize menu entries
|
||||
IFS=$'\n'
|
||||
count_limit_snap=0
|
||||
for item in $(snapshot_list); do
|
||||
### fix: limit_snap_show=0
|
||||
# fix: limit_snap_show=0
|
||||
[[ ${limit_snap_show} -le 0 ]] && break;
|
||||
IFS=$oldIFS
|
||||
snap_full_name="$(echo "$item" | cut -d'|' -f2-)" # do not trim it to keep nice formatting
|
||||
snap_dir_name="$(echo "$item" | cut -d'|' -f2)"
|
||||
snap_dir_name="$(trim "$snap_dir_name")"
|
||||
|
||||
### ignore specific path during run "grub-mkconfig"
|
||||
if [ ! -z "${ignore_specific_path}" ] ; then
|
||||
for isp in ${ignore_specific_path[@]} ; do
|
||||
[[ "${gbgmp}"/"${snap_dir_name}" == "${gbgmp}"/"${isp}"/* ]] && continue 2;
|
||||
done
|
||||
fi
|
||||
### detect if /boot directory exists
|
||||
[[ ! -d "$gbgmp/$snap_dir_name/boot" ]] && continue;
|
||||
### show snapshot found during run "grub-mkconfig"
|
||||
snap_date_time="$(echo "$item" | cut -d' ' -f1-2)"
|
||||
snap_date_time="$(trim "$snap_date_time")"
|
||||
if [[ "${show_snap_found}" = "true" ]]; then
|
||||
gettext_printf $"# Found snapshot: %s\n" "$item" >&2 ;
|
||||
fi
|
||||
### Kernel (auto-detect + custom kernel)
|
||||
unset list_kernel
|
||||
|
||||
boot_dir="$gbgmp/$snap_dir_name/boot"
|
||||
# Kernel (Original + custom kernel)
|
||||
detect_kernel
|
||||
if [ -z "${list_kernel}" ]; then continue; fi
|
||||
name_kernel=("${list_kernel[@]##*"/"}")
|
||||
# echo "kernel = ${name_kernel[*]}"
|
||||
if [[ "${harmonized_entries}" != "true" ]]; then
|
||||
### Initramfs (autodetect + custom initramfs)
|
||||
unset list_initramfs
|
||||
detect_initramfs
|
||||
name_initramfs=("${list_initramfs[@]##*"/"}")
|
||||
# echo "initramfs = ${name_initramfs[*]}"
|
||||
fi
|
||||
### microcode (auto-detect + custom microcode)
|
||||
unset list_ucode
|
||||
# Initramfs (Original + custom initramfs)
|
||||
detect_initramfs
|
||||
if [ -z "${list_initramfs}" ]; then continue; fi
|
||||
name_initramfs=("${list_initramfs[@]##*"/"}")
|
||||
# microcode (intel-ucode + custom microcode)
|
||||
detect_microcode
|
||||
name_microcode=("${list_ucode[@]##*"/"}")
|
||||
# echo "ucode = ${name_microcode[*]}"
|
||||
### real path to boot
|
||||
boot_dir_real_path="$(make_system_path_relative_to_its_root "$(boot_dir)")"
|
||||
### Create menu entries
|
||||
## name snapshot
|
||||
path_snapshot
|
||||
## title menu custom
|
||||
title_format
|
||||
# echo "${title_menu}"
|
||||
if [[ "${harmonized_entries}" = "false" ]]; then
|
||||
snapshots_entry
|
||||
else
|
||||
harmonized_snapshots_entry
|
||||
# show snapshot found during run "grub-mkconfig"
|
||||
if [[ "${show_snap_found}" = "true" ]]; then
|
||||
printf $"# Found snapshot: %s\n" "$item" >&2 ;
|
||||
fi
|
||||
# Show full path snapshot or only name
|
||||
path_snapshot
|
||||
# Title format in grub-menu
|
||||
title_format
|
||||
# convert /boot directory to root of GRUB (e.g /boot become /)
|
||||
boot_dir_root_grub="$(make_system_path_relative_to_its_root "${boot_dir}")"
|
||||
# Make menuentries
|
||||
make_menu_entries
|
||||
### Limit snapshots found during run "grub-mkconfig"
|
||||
count_limit_snap=$((1+$count_limit_snap))
|
||||
[[ $count_limit_snap -ge $limit_snap_show ]] && break;
|
||||
# Limit generation of menuentries if exceeds 250
|
||||
# [[ $count_warning_menuentries -ge 250 ]] && break;
|
||||
done
|
||||
IFS=$oldIFS
|
||||
}
|
||||
boot_separate()
|
||||
{
|
||||
boot_dir="/boot"
|
||||
# convert /boot directory to root of GRUB (e.g /boot become /)
|
||||
boot_dir_root_grub="$(make_system_path_relative_to_its_root "${boot_dir}")"
|
||||
|
||||
# Kernel (Original + custom kernel)
|
||||
detect_kernel
|
||||
if [ -z "${list_kernel}" ]; then print_error "Kernels not found."; fi
|
||||
name_kernel=("${list_kernel[@]##*"/"}")
|
||||
|
||||
# Initramfs (Original + custom initramfs)
|
||||
detect_initramfs
|
||||
if [ -z "${list_initramfs}" ]; then print_error "Initramfs not found."; fi
|
||||
name_initramfs=("${list_initramfs[@]##*"/"}")
|
||||
|
||||
# microcode (auto-detect + custom microcode)
|
||||
detect_microcode
|
||||
name_microcode=("${list_ucode[@]##*"/"}")
|
||||
|
||||
# Initialize menu entries
|
||||
IFS=$'\n'
|
||||
for item in $(snapshot_list); do
|
||||
# fix: limit_snap_show=0
|
||||
[[ ${limit_snap_show} -le 0 ]] && break;
|
||||
IFS=$oldIFS
|
||||
snap_full_name="$(echo "$item" | cut -d'|' -f2-)" # do not trim it to keep nice formatting
|
||||
snap_dir_name="$(echo "$item" | cut -d'|' -f2)"
|
||||
snap_dir_name="$(trim "$snap_dir_name")"
|
||||
snap_date_time="$(echo "$item" | cut -d' ' -f1-2)"
|
||||
snap_date_time="$(trim "$snap_date_time")"
|
||||
# show snapshot found during run "grub-mkconfig"
|
||||
if [[ "${show_snap_found}" = "true" ]]; then
|
||||
printf $"# Found snapshot: %s\n" "$item" >&2 ;
|
||||
fi
|
||||
# Show full path snapshot or only name
|
||||
path_snapshot
|
||||
# Title format in grub-menu
|
||||
title_format
|
||||
# Make menuentries
|
||||
make_menu_entries
|
||||
# Limit snapshots found during run "grub-mkconfig"
|
||||
count_limit_snap=$((1+$count_limit_snap))
|
||||
[[ $count_limit_snap -ge $limit_snap_show ]] && break;
|
||||
# Limit generation of menuentries if exceeds 250
|
||||
# [[ $count_warning_menuentries -ge 250 ]] && break;
|
||||
done
|
||||
IFS=$oldIFS
|
||||
}
|
||||
### END auto detect ###
|
||||
|
||||
### Start ###
|
||||
gettext_printf "###### - Grub-btrfs: Auto-detect Start - ######\n" >&2 ;
|
||||
### create mount point and mounts
|
||||
[[ ! -d $gbgmp ]] && mkdir -p $gbgmp
|
||||
mount -o subvolid=5 /dev/disk/by-uuid/$root_uuid $gbgmp/
|
||||
### Create a menu in grub
|
||||
echo "submenu '${submenuname}' {"
|
||||
list_kernels_initramfs ;
|
||||
## show total found snapshots
|
||||
if [[ "${show_total_snap_found}" = "true" ]]; then
|
||||
gettext_printf "# Found ${count_limit_snap} snapshot(s)\n" >&2 ;
|
||||
fi
|
||||
## if no snapshot found, show a warning
|
||||
if [[ "${count_limit_snap}" = "0" ]]; then
|
||||
echo " submenu '---> "No snapshot found : Press ESC to return previous menu" <---' { echo } ";
|
||||
gettext_printf "# No snapshot found \n# make sure you have at least one snapshot \n# or please file a bug report at \"https://github.com/Antynea/grub-btrfs\"\n" >&2 ;
|
||||
fi
|
||||
echo "}"
|
||||
## unmount mount point
|
||||
umount $gbgmp
|
||||
gettext_printf "###### - Grub-btrfs: Auto-detect End - ######\n" >&2 ;
|
||||
printf "###### - Grub-btrfs: Snapshot detection started - ######\n" >&2 ;
|
||||
# if btrfs prog isn't installed, exit
|
||||
test_btrfs
|
||||
# Delete existing config
|
||||
#rm -f --preserve-root "/boot/grub/grub-btrfs.cfg"
|
||||
> "/boot/grub/grub-btrfs.cfg"
|
||||
# Create mount point then mounting
|
||||
[[ ! -d $gbgmp ]] && mkdir -p $gbgmp
|
||||
mount -o subvolid=5 /dev/disk/by-uuid/$root_uuid $gbgmp/
|
||||
# Count menuentries
|
||||
count_warning_menuentries=0
|
||||
# Count snapshots
|
||||
count_limit_snap=0
|
||||
# Detects if /boot is a separate partition
|
||||
if [[ "$root_uuid" != "$boot_uuid" ]]; then
|
||||
printf "# Info: Separate boot partition detected \n" >&2 ;
|
||||
boot_separate
|
||||
else
|
||||
printf "# Info: Separate boot partition not detected \n" >&2 ;
|
||||
boot_bounded
|
||||
fi
|
||||
# unmounting mount point
|
||||
umount $gbgmp
|
||||
# Show warn, menuentries exceeds 250 entries
|
||||
[[ $count_warning_menuentries -ge 250 ]] && printf "# Generated ${count_warning_menuentries} total GRUB entries. You might experience issues loading snapshots menu in GRUB.\n" >&2 ;
|
||||
# printf "# menuentries = $count_warning_menuentries \n" >&2 ;
|
||||
# Show total found snapshots
|
||||
if [[ "${show_total_snap_found}" = "true" && ! -z "${count_limit_snap}" && "${count_limit_snap}" != "0" ]]; then
|
||||
printf "# Found ${count_limit_snap} snapshot(s)\n" >&2 ;
|
||||
fi
|
||||
# if no snapshot found, exit
|
||||
if [[ "${count_limit_snap}" = "0" || -z "${count_limit_snap}" ]]; then
|
||||
print_error "No snapshots found."
|
||||
fi
|
||||
root_grub="$(make_system_path_relative_to_its_root /boot/grub)"
|
||||
# Make a submenu in GRUB (grub.cfg)
|
||||
cat << EOF
|
||||
submenu '${submenuname}' {
|
||||
configfile "${root_grub}/grub-btrfs.cfg"
|
||||
}
|
||||
EOF
|
||||
printf "###### - Grub-btrfs: Snapshot detection ended - ######\n" >&2 ;
|
||||
### End ###
|
||||
|
||||
16
41_snapshots-btrfs_config
Normal file
16
41_snapshots-btrfs_config
Normal file
@@ -0,0 +1,16 @@
|
||||
#!/usr/bin/env bash
|
||||
|
||||
# GRUB_BTRFS_SUBMENUNAME="Arch Linux snapshots" # Name appearing in the Grub menu
|
||||
# GRUB_BTRFS_PREFIXENTRY="Snapshot:" # Add a name ahead your snapshots entries in the Grub menu
|
||||
# GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true" # Show full path snapshot or only name in the Grub menu
|
||||
# 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
|
||||
# GRUB_BTRFS_LIMIT="50" # Limit the number of snapshots populated in the GRUB menu
|
||||
# GRUB_BTRFS_SUBVOLUME_SORT="descending" # Sort the found subvolumes by newest first ("descending") or oldest first ("ascending") and show $GRUB_BTRFS_LIMIT first entries.
|
||||
# GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="true" # Show snapshots found during run "grub-mkconfig"
|
||||
# GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true" # Show Total of snapshots found during run "grub-mkconfig"
|
||||
# GRUB_BTRFS_NKERNEL=("vmlinuz-linux") # Use only if you have custom kernel name
|
||||
# GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img") # Use only if you have custom initramfs name
|
||||
# GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img") # Use only if you have custom intel-ucode
|
||||
# GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker") # Ignore specific path during run "grub-mkconfig"
|
||||
# GRUB_BTRFS_SNAPPER_CONFIG="root" # Snapper's config name to use
|
||||
# GRUB_BTRFS_DISABLE="false" # Disable Grub-btrfs
|
||||
30
README.md
30
README.md
@@ -2,14 +2,14 @@
|
||||
|
||||
## grub-btrfs
|
||||
|
||||
This is a version 2.xx of grub-btrfs
|
||||
This is a version 3.xx of grub-btrfs
|
||||
##### BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
|
||||
##
|
||||
### Description
|
||||
|
||||
grub-btrfs, Include btrfs snapshots at boot options. (grub menu)
|
||||
##
|
||||
### What does grub-btrfs v2.xx do :
|
||||
### What does grub-btrfs v3.xx do :
|
||||
|
||||
Simple rollback using snapshots you made previously.
|
||||
|
||||
@@ -17,14 +17,15 @@ Simple rollback using snapshots you made previously.
|
||||
|
||||
* Automatically Detect if "/boot" is in separate partition.
|
||||
|
||||
* Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots. (For custom name, see below.)
|
||||
* Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots.
|
||||
|
||||
* Automatically Create corresponding "menuentry" in grub.cfg , which ensures a very easy rollback.
|
||||
|
||||
* Automatically detect snapper and use snapper's snapshot description if available.
|
||||
##
|
||||
### How to use it:
|
||||
### How to customize it:
|
||||
|
||||
You have the possibility to modify many parameters.
|
||||
Add this lines to /etc/default/grub:
|
||||
|
||||
* GRUB_BTRFS_SUBMENUNAME="Arch Linux Snapshots"
|
||||
@@ -43,19 +44,19 @@ Add this lines to /etc/default/grub:
|
||||
|
||||
(Custom title, shows/hides p"prefix" d"date" n"name" in grub-menu, separator "/", custom order available)
|
||||
|
||||
* GRUB_BTRFS_NKERNEL=("vmlinuz-linux")
|
||||
* GRUB_BTRFS_NKERNEL=("kernel-custom")
|
||||
|
||||
(Use only if you have a custom kernel name or auto-detect failed.)
|
||||
(Use it only if you have a custom kernel name)
|
||||
|
||||
* GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img")
|
||||
* GRUB_BTRFS_NINIT=("initramfs-custom.img" "initrd.img-custom")
|
||||
|
||||
(Use only if you have a custom initramfs name or auto-detect failed.)
|
||||
(Use it only if you have a custom initramfs name)
|
||||
|
||||
* GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img")
|
||||
|
||||
(Use only if you have custom intel-ucode or auto-detect failed.)
|
||||
(Use it only if you have custom intel-ucode)
|
||||
|
||||
* GRUB_BTRFS_LIMIT="100"
|
||||
* GRUB_BTRFS_LIMIT="50"
|
||||
|
||||
(Limit the number of snapshots populated in the GRUB menu.)
|
||||
|
||||
@@ -73,14 +74,17 @@ Add this lines to /etc/default/grub:
|
||||
|
||||
(Show Total number of snapshots found during run "grub-mkconfig")
|
||||
|
||||
* GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker" "nosnapshot")
|
||||
* GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker")
|
||||
|
||||
(Ignore specific path during run "grub-mkconfig")
|
||||
|
||||
* GRUB_BTRFS_CREATE_ONLY_HARMONIZED_ENTRIES="false"
|
||||
* GRUB_BTRFS_SNAPPER_CONFIG="root"
|
||||
|
||||
(Create entries with matching version number instead of all possible combinations of kernel and initramfs, very useful with debian-like distributions)
|
||||
(Snapper's config name to use)
|
||||
|
||||
* GRUB_BTRFS_DISABLE="true"
|
||||
|
||||
(Disable grub-btrfs)
|
||||
|
||||
|
||||
Generate grub.cfg (on Arch linux use grub-mkconfig -o /boot/grub/grub.cfg )
|
||||
|
||||
Reference in New Issue
Block a user