Corrects a mistake

Corrects the duplicate that appeared Line16 should be : `@install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-hook" "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs" # Arch Linux only`
Fix indentation
2026-03-04 21:15:02 +08:00 · 2020-10-22 21:19:54 +02:00 · 2020-10-22 07:07:30 +02:00 · 2020-10-21 19:14:05 +02:00 · 2020-10-15 16:27:32 +02:00 · 2020-10-14 15:29:50 +02:00
8 changed files with 555 additions and 519 deletions
--- a/720
+++ b/720
@@ -1,7 +1,6 @@
 #! /usr/bin/env bash
 #
 #
-#########################################################################################################################################################################
 # Written by: Antynea
 # BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
 # Github: https://github.com/Antynea/grub-btrfs
@@ -10,7 +9,8 @@
 #   Improves Grub by adding "btrfs snapshots" to the Grub menu.
 #   You can start your system on a "snapshot" from the Grub menu.
 #   Supports manual snapshots, snapper ...
-#   Warning : it isn't recommended to start on read-only snapshot
+#   Warning : booting on read-only snapshots can be tricky
+#   (Read about it, https://github.com/Antynea/grub-btrfs#warning-booting-on-read-only-snapshots-can-be-tricky)
 #
 # What this script does:
 # - Automatically List snapshots existing on root partition (btrfs).
@@ -29,15 +29,15 @@
 #
 # Automatically update Grub
 #  If you would like Grub to automatically update when a snapshots is made or deleted:
-# - Mount your subvolume which contains snapshots to /.snapshots
-# - Use systemctl start/enable grub-btrfs.path
-#  grub-btrfs.path will automatically (re)generate grub.cfg when a modification appear in /.snapshots
+#  - Use systemctl start/enable grub-btrfs.path
+#  - grub-btrfs.path automatically (re)generates grub.cfg when a modification appears in /.snapshots folder (by default).
+#  - If your snapshots aren't mounted in /.snapshots, you must modify the watch folder using systemctl edit grub-btrfs.path
+#  - See https://github.com/Antynea/grub-btrfs#automatically-update-grub
 #
 # Special thanks for assistance and contributions:
 # - My friends
 # - All contributors on Github
 #
-#########################################################################################################################################################################

 set -e

@@ -51,63 +51,48 @@ grub_btrfs_config="${sysconfdir}/default/grub-btrfs/config"
 . "$datarootdir/grub/grub-mkconfig_lib"
 . "${sysconfdir}/default/grub"

-###################################################
-### Variables in /etc/default/grub-btrfs/config ###
-###################################################
+### Variables in /etc/default/grub-btrfs/config
 ## Disable Grub-btrfs (default=active)
-grub_btrfs_disable=${GRUB_BTRFS_DISABLE:-"false"}
-[[ "${grub_btrfs_disable}" == "true" ]] && exit 0
+[[ "${GRUB_BTRFS_DISABLE:-"false"}" == "true" ]] && exit 0
 ## Submenu name
-submenuname=${GRUB_BTRFS_SUBMENUNAME:-"Arch Linux snapshots"}
+distro=$(awk -F "=" '/^NAME=/ {gsub(/"/, "", $2); print $2}' /etc/os-release)
+submenuname=${GRUB_BTRFS_SUBMENUNAME:-"${distro:-Linux} snapshots"}
 ## Prefix entry
 prefixentry=${GRUB_BTRFS_PREFIXENTRY:-"Snapshot:"}
-## Show full path snapshot or only name
-path_snapshot=${GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT:-"true"}
-## Title format
-title_format=${GRUB_BTRFS_TITLE_FORMAT:-"p/d/n"}
-## Kernel(s) name(s)
-nkernel=("${GRUB_BTRFS_NKERNEL[@]}")
-## Initramfs name(s)
-ninit=("${GRUB_BTRFS_NINIT[@]}")
-## Microcode(s) name(s)
-microcode=("${GRUB_BTRFS_INTEL_UCODE[@]}")
 ## Limit snapshots to show in the Grub menu
 limit_snap_show="${GRUB_BTRFS_LIMIT:-50}"
 ## How to sort snapshots list
-snap_list_sort=${GRUB_BTRFS_SUBVOLUME_SORT:-"descending"}
-case "${snap_list_sort}" in
-    ascending)          btrfssubvolsort=("--sort=+rootid");;
-    *)                  btrfssubvolsort=("--sort=-rootid")
-esac
-## Show snapshots found during run "grub-mkconfig"
-show_snap_found=${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}
-## Show Total of snapshots found during run "grub-mkconfig"
-show_total_snap_found=${GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND:-"true"}
-## Ignore specific path during run "grub-mkconfig"
-ignore_specific_path=("${GRUB_BTRFS_IGNORE_SPECIFIC_PATH[@]}")
+btrfssubvolsort=(--sort="${GRUB_BTRFS_SUBVOLUME_SORT:-"-rootid"}")
 ## Snapper's config name
 snapper_config=${GRUB_BTRFS_SNAPPER_CONFIG:-"root"}
-## Override boot partition detection
-override_boot_partition_detection=${GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION:-"false"}
-## Customize GRUB directory
-grub_directory=${GRUB_BTRFS_DIRNAME:-"grub"}
+## Customize GRUB directory, where "grub.cfg" file is saved
+grub_directory=${GRUB_BTRFS_GRUB_DIRNAME:-"/boot/grub"}
+## Customize BOOT directory, where kernels/initrams/microcode is saved.
+boot_directory=${GRUB_BTRFS_BOOT_DIRNAME:-"/boot"}
+## Password protection management for submenu
+# Protection support for submenu (--unrestricted)
+case "${GRUB_BTRFS_DISABLE_PROTECTION_SUBMENU:-"false"}" in
+    true)   unrestricted_access_submenu="--unrestricted ";;
+    *)      unrestricted_access_submenu=""
+esac
+# Authorized users (--users foo,bar)
+if [ ! -z "${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS}" ] ; then
+    protection_authorized_users="--users ${GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS} "
+fi

-########################
-### variables script ###
-########################
-## Internationalization (default : english)
-export TEXTDOMAIN=grub-btrfs-git
-export TEXTDOMAINDIR="/usr/share/locale"
+### variables script
 ## Probe info "Boot partition"
 # Boot device
-boot_device=$(${grub_probe} --target=device /boot)
+boot_device=$(${grub_probe} --target=device ${boot_directory})
 # hints string
 boot_hs=$(${grub_probe} --device ${boot_device} --target="hints_string" 2>/dev/null)
 # UUID of the boot partition
 boot_uuid=$(${grub_probe} --device ${boot_device} --target="fs_uuid" 2>/dev/null)
 # Type filesystem of boot partition
-boot_fs=$(${grub_probe} --target="fs" /boot 2>/dev/null)
+boot_fs=$(${grub_probe} --device ${boot_device} --target="fs" 2>/dev/null)
 ## Probe info "Root partition"
+# Type filesystem of root partition
+root_fs=$(${grub_probe} --target="fs" / 2>/dev/null)
 # Root device
 root_device=$(${grub_probe} --target=device /)
 # UUID of the root partition
@@ -125,397 +110,394 @@ check_uuid_required() {
 if [ "x${root_uuid}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
    || ! test -e "/dev/disk/by-uuid/${root_uuid}" \
    || ( test -e "${root_device}" && uses_abstraction "${root_device}" lvm ); then
-  LINUX_ROOT_DEVICE=${root_device}
+    LINUX_ROOT_DEVICE=${root_device}
 else
-  LINUX_ROOT_DEVICE=UUID=${root_uuid}
+    LINUX_ROOT_DEVICE=UUID=${root_uuid}
 fi
 }

-
-######################
-### Error Handling ###
-######################
+### Error Handling
 print_error()
 {
-	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# ${nothing_to_do}" >&2 ;
-	exit 0
+    local arg="$@"
+    local nothing_to_do="If you think an error has occurred , please file a bug report at \" https://github.com/Antynea/grub-btrfs \"\nNothing to do. Abort.\n"
+    printf "${arg}\n${nothing_to_do}" >&2 ;
+    exit 0
 }

 test_btrfs()
 {
-	set +e
-	type btrfs >/dev/null 2>&1
-	if [[ $? -ne 0 ]]; then
-		print_error "This script only supports snapshots of the btrfs filesystem, make sure you have btrfs-progs on your system."
-	fi
-	set -e
+    [[ "$root_fs" != "btrfs" ]] && print_error "Root partition isn't a btrfs filesystem.\nThis script only supports snapshots of the btrfs filesystem."
+    set +e
+    type btrfs >/dev/null 2>&1
+    if [[ $? -ne 0 ]]; then
+        print_error "Unable to retrieve info from btrfs filesystem, make sure you have btrfs-progs on your system."
+    fi
+    set -e
 }

-##############
-### Script ###
-##############
-
-
+### Script
 ## Create entry
-entry()	{
-echo "$@" >> "/boot/$grub_directory/grub-btrfs.cfg"
-# local arg="$@"
-# echo "${arg}" >> "/boot/$grub_directory/grub-btrfs.cfg"
-# cat << EOF >> "/boot/$grub_directory/grub-btrfs.cfg"
-# ${arg}
-# EOF
+entry()
+{
+echo "$@" >> "$grub_directory/grub-btrfs.cfg"
 }

 ## menu entries
 make_menu_entries()
 {
 ## \" required for snap,kernels,init,microcode with space in their name
-	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=${i%%"-"*}
-			suffix_i=${i#*"-"}
-         	alt_suffix_i=${i##*"-"}
+    entry "submenu '$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=${i%%"-"*}
+            suffix_i=${i#*"-"}
+            alt_suffix_i=${i##*"-"}
            if   [ "${kversion}" = "${suffix_i}" ];                 then i="${i}";
            elif [ "${kversion}.img" = "${suffix_i}" ];             then i="${i}";
            elif [ "${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}" && "${i}" != "${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 ${boot_hs} ${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="${LINUX_ROOT_DEVICE}" rw rootflags=subvol=\""${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
-	entry  "}"
+            else continue ;
+            fi
+            for u in "${name_microcode[@]}"; do
+                if [[ "${name_microcode}" != "x" ]] ; 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 ${boot_hs} ${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="${LINUX_ROOT_DEVICE}" rw ${kernel_parameters} rootflags=subvol=\""${snap_dir_name}"\""
+                if [[ "${name_microcode}" != "x" ]] ; then
+                    entry "\
+        echo 'Loading Microcode & Initramfs: "${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
+    entry  "}"
 }

 ## Trim a string from leading and trailing whitespaces
 trim() {
-	local var="$*"
-	var="${var#"${var%%[![:space:]]*}"}"
-	var="${var%"${var##*[![:space:]]}"}"
-	echo -n "$var"
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"
+    var="${var%"${var##*[![:space:]]}"}"
+    echo -n "$var"
 }

 ## List of snapshots on filesystem
 snapshot_list()
 {
-	# Query info from snapper if it is installed
-	type snapper >/dev/null 2>&1
-	if [ $? -eq 0 ]; then
-		if [ -s "/etc/snapper/configs/$snapper_config" ]; then
-			printf "# Info: snapper detected, using config '$snapper_config'\n" >&2
-			local snapper_ids=($(snapper --no-dbus -t 0 -c "$snapper_config" list | tail -n +3 | cut -d'|' -f 1))
-			local snapper_types=($(snapper --no-dbus -t 0 -c "$snapper_config" list | tail -n +3 | cut -d'|' -f 2))
+    # Query info from snapper if it is installed
+    type snapper >/dev/null 2>&1
+    if [ $? -eq 0 ]; then
+        if [ -s "/etc/snapper/configs/$snapper_config" ]; then
+            printf "Info: snapper detected, using config '$snapper_config'\n" >&2
+            local snapper_ids=($(snapper --no-dbus -t 0 -c "$snapper_config" list --disable-used-space | tail -n +3 | cut -d'|' -f 1))
+            local snapper_types=($(snapper --no-dbus -t 0 -c "$snapper_config" list --disable-used-space | tail -n +3 | cut -d'|' -f 2))

-			IFS=$'\n'
-			local snapper_descriptions=($(snapper --no-dbus -t 0 -c "$snapper_config" list | tail -n +3 | rev | cut -d'|' -f 2 | rev))
-		else
-			printf "# Warning: snapper detected but config '$snapper_config' does not exist\n" >&2
-		fi
-	fi
+            IFS=$'\n'
+            local snapper_descriptions=($(snapper --no-dbus -t 0 -c "$snapper_config" list --disable-used-space | tail -n +3 | rev | cut -d'|' -f 2 | rev))
+        else
+            printf "Warning: snapper detected but config '$snapper_config' does not exist\n" >&2
+        fi
+    fi

-	IFS=$'\n'
+    IFS=$'\n'

-	# Parse btrfs snapshots
-	local entries=()
-	local ids=()
-	local max_entry_length=0
-	for snap in $(btrfs subvolume list -sa "${btrfssubvolsort}" /); do
-		IFS=$oldIFS
-		snap=($snap)
-		local snap_path_name=${snap[@]:13:${#snap[@]}}
+    # Parse btrfs snapshots
+    local entries=()
+    local ids=()
+    local max_entry_length=0
+    for snap in $(btrfs subvolume list -sa "${btrfssubvolsort}" /); do
+        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#*"/"}
+        # 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}" == "${isp}"/* ]] && continue 2;
-			done
-		fi
+        # ignore specific path during run "grub-mkconfig"
+        if [ ! -z "${GRUB_BTRFS_IGNORE_SPECIFIC_PATH}" ] ; then
+            for isp in ${GRUB_BTRFS_IGNORE_SPECIFIC_PATH[@]} ; do
+                [[ "${snap_path_name}" == "${isp}" ]] && continue 2;
+            done
+        fi
+        if [ ! -z "${GRUB_BTRFS_IGNORE_PREFIX_PATH}" ] ; then
+            for isp in ${GRUB_BTRFS_IGNORE_PREFIX_PATH[@]} ; do
+                [[ "${snap_path_name}" == "${isp}"/* ]] && continue 2;
+            done
+        fi

-		# detect if /boot directory exists
-		[[ ! -d "$gbgmp/$snap_path_name/boot" ]] && continue;
+        # 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")
+        local id="${snap_path_name//[!0-9]}" # brutal way to get id: remove everything non-numeric
+        ids+=("$id")

-		local entry="${snap[@]:10:2} | ${snap_path_name}"
-		entries+=("$entry")
+        local entry="${snap[@]:10:2} | ${snap_path_name}"
+        entries+=("$entry")

-		# Find max length of a snapshot entry, needed for pretty formatting
-		local length="${#entry}"
-		[[ "$length" -gt "$max_entry_length" ]] && max_entry_length=$length
-	done
+        # Find max length of a snapshot entry, needed for pretty formatting
+        local length="${#entry}"
+        [[ "$length" -gt "$max_entry_length" ]] && max_entry_length=$length
+    done

-	# Find max length of a snapshot type, needed for pretty formatting
-	local max_type_length=0
-	for id in "${ids[@]}"; do
-		for j in "${!snapper_ids[@]}"; do
-			local snapper_id="${snapper_ids[$j]//[[:space:]]/}"
-			if [[ "$snapper_id" == "$id" ]]; then
-				local snapper_type=$(trim "${snapper_types[$j]}")
-				local length="${#snapper_type}"
-				[[ "$length" -gt "$max_type_length" ]] && max_type_length=$length
-			fi
-		done
-	done
+    # Find max length of a snapshot type, needed for pretty formatting
+    local max_type_length=0
+    for id in "${ids[@]}"; do
+        for j in "${!snapper_ids[@]}"; do
+            local snapper_id="${snapper_ids[$j]//[[:space:]]/}"
+            if [[ "$snapper_id" == "$id" ]]; then
+                local snapper_type=$(trim "${snapper_types[$j]}")
+                local length="${#snapper_type}"
+                [[ "$length" -gt "$max_type_length" ]] && max_type_length=$length
+            fi
+        done
+    done

-	for i in "${!entries[@]}"; do
-		local id="${ids[$i]}"
-		local entry="${entries[$i]}"
-		for j in "${!snapper_ids[@]}"; do
-			local snapper_id="${snapper_ids[$j]//[[:space:]]/}"
-			# remove other non numeric characters
-			snapper_id="${snapper_id//\*/}"
-			snapper_id="${snapper_id//\+/}"
-			snapper_id="${snapper_id//-/}"
-			if [[ "$snapper_id" == "$id" ]]; then
-				local snapper_type=$(trim "${snapper_types[$j]}")
-				local snapper_description=$(trim "${snapper_descriptions[$j]}")
-				printf -v entry "%-${max_entry_length}s | %-${max_type_length}s | %s" "$entry" "$snapper_type" "$snapper_description"
-				break
-			fi
-		done
-		echo "$entry"
-	done
+    for i in "${!entries[@]}"; do
+        local id="${ids[$i]}"
+        local entry="${entries[$i]}"
+        for j in "${!snapper_ids[@]}"; do
+            local snapper_id="${snapper_ids[$j]//[[:space:]]/}"
+            # remove other non numeric characters
+            snapper_id="${snapper_id//\*/}"
+            snapper_id="${snapper_id//\+/}"
+            snapper_id="${snapper_id//-/}"
+            if [[ "$snapper_id" == "$id" ]]; then
+                local snapper_type=$(trim "${snapper_types[$j]}")
+                local snapper_description=$(trim "${snapper_descriptions[$j]}")
+                printf -v entry "%-${max_entry_length}s | %-${max_type_length}s | %s" "$entry" "$snapper_type" "$snapper_description"
+                break
+            fi
+        done
+        echo "$entry"
+    done

-	IFS=$oldIFS
+    IFS=$oldIFS
 }

 ## Detect kernels in "/boot"
 detect_kernel()
 {
-	list_kernel=()
-	# Original kernel (auto-detect)
-	for okernel in	"${boot_dir}"/vmlinuz-* \
-			"${boot_dir}"/vmlinux-* \
-			"${boot_dir}"/kernel-* ; do
-		[[ ! -f "${okernel}" ]] && continue;
-		list_kernel+=("$okernel")
-	done
+    list_kernel=()
+    # Original kernel (auto-detect)
+    for okernel in  "${boot_dir}"/vmlinuz-* \
+                    "${boot_dir}"/vmlinux-* \
+                    "${boot_dir}"/kernel-* ; do
+        [[ ! -f "${okernel}" ]] && continue;
+        list_kernel+=("$okernel")
+    done

-	# Custom name kernel in GRUB_BTRFS_NKERNEL
-	if [ ! -z "${nkernel}" ] ; then
-		for ckernel in "${boot_dir}/${nkernel[@]}" ; do
-			[[ ! -f "${ckernel}" ]] && continue;
-			list_kernel+=("$ckernel")
-		done
-	fi
+    # Custom name kernel in GRUB_BTRFS_NKERNEL
+    if [ ! -z "${GRUB_BTRFS_NKERNEL}" ] ; then
+        for ckernel in "${boot_dir}/${GRUB_BTRFS_NKERNEL[@]}" ; do
+            [[ ! -f "${ckernel}" ]] && continue;
+            list_kernel+=("$ckernel")
+        done
+    fi
 }

 ## Detect initramfs in "/boot"
 detect_initramfs()
 {
-	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+=("$oinitramfs")
-	done
+    list_initramfs=()
+    # Original initramfs (auto-detect)
+    for oinitramfs in   "${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
-	if [ ! -z "$ninit" ] ; then
-		for cinitramfs in "${boot_dir}/${ninit[@]}" ; do
-			[[ ! -f "${cinitramfs}" ]] && continue;
-			list_initramfs+=("$cinitramfs")
-		done
-	fi
+    # Custom name initramfs in GRUB_BTRFS_NINIT
+    if [ ! -z "${GRUB_BTRFS_NINIT}" ] ; then
+        for cinitramfs in "${boot_dir}/${GRUB_BTRFS_NINIT[@]}" ; do
+            [[ ! -f "${cinitramfs}" ]] && continue;
+            list_initramfs+=("$cinitramfs")
+        done
+    fi
 }

 ## Detect microcode in "/boot"
 detect_microcode()
 {
-	list_ucode=()
-	# Original intel microcode
-	for oiucode in "${boot_dir}"/intel-ucode.img ; do
-		[[ ! -f "${oiucode}" ]] && continue;
-		list_ucode+=("$oiucode")
-	done
+    list_ucode=()
+    # Original intel/amd microcode (auto-detect)
+    # See "https://www.gnu.org/software/grub/manual/grub/html_node/Simple-configuration.html"
+    for oiucode in  "${boot_dir}"/intel-uc.img \
+                    "${boot_dir}"/intel-ucode.img \
+                    "${boot_dir}"/amd-uc.img \
+                    "${boot_dir}"/amd-ucode.img \
+                    "${boot_dir}"/early_ucode.cpio \
+                    "${boot_dir}"/microcode.cpio; do
+        [[ ! -f "${oiucode}" ]] && continue;
+        list_ucode+=("$oiucode")
+    done

-	# Custom name microcode in GRUB_BTRFS_INTEL_UCODE
-	if [ ! -z "$microcode" ] ; then
-		for cucode in "${boot_dir}/${microcode[@]}" ; do
-			[[ ! -f "${cucode}" ]] && continue
-			list_ucode+=("$cucode")
-		done
-	fi
-	if [ -z "${list_ucode}" ]; then list_ucode=(x); fi
+    # Custom name microcode in GRUB_BTRFS_CUSTOM_MICROCODE
+    if [ ! -z "${GRUB_BTRFS_CUSTOM_MICROCODE}" ] ; then
+        for cucode in "${boot_dir}/${GRUB_BTRFS_CUSTOM_MICROCODE[@]}" ; do
+            [[ ! -f "${cucode}" ]] && continue
+            list_ucode+=("$cucode")
+        done
+    fi
+    if [ -z "${list_ucode}" ]; then list_ucode=(x); fi
 }

 ## Show full path snapshot or only name
 path_snapshot()
 {
-	case "${path_snapshot}" in
-		true) name_snapshot=("${snap_full_name}");;
-		*) name_snapshot=("${snap_full_name#*"/"}")
-	esac
+    case "${GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT:-"true"}" in
+        true) name_snapshot=("${snap_full_name}");;
+        *)    name_snapshot=("${snap_full_name#*"/"}")
+    esac
 }

 ## Title format in grub-menu
 title_format()
 {
-	case "${title_format}" in
-		p/n/d) 	title_menu="${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}";;
-		*)		title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}"
-	esac
+    case "${GRUB_BTRFS_TITLE_FORMAT:-"p/d/n"}" in
+        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}";;
+        *)      title_menu="${prefixentry} ${snap_date_time} ${name_snapshot}"
+    esac
 }

 ## List of kernels, initramfs and microcode in snapshots
 boot_bounded()
 {
-	# 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")"
-
-		boot_dir="$gbgmp/$snap_dir_name/boot"
-		# Kernel (Original + custom kernel)
-		detect_kernel
-		if [ -z "${list_kernel}" ]; then continue; fi
-		name_kernel=("${list_kernel[@]##*"/"}")
-		# 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=("${list_ucode[@]##*"/"}")
-		# show snapshot found during run "grub-mkconfig"
-		if [[ "${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
+    # Initialize menu entries
+    IFS=$'\n'
+    for item in $(snapshot_list); do
+        [[ ${limit_snap_show} -le 0 ]] && break; # fix: limit_snap_show=0
+        IFS=$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")"
+        
+        boot_dir="$gbgmp/$snap_dir_name$boot_directory"
+        # Kernel (Original + custom kernel)
+        detect_kernel
+        if [ -z "${list_kernel}" ]; then continue; fi
+        name_kernel=("${list_kernel[@]##*"/"}")
+        # Initramfs (Original + custom initramfs)
+        detect_initramfs
+        if [ -z "${list_initramfs}" ]; then continue; fi
+        name_initramfs=("${list_initramfs[@]##*"/"}")
+        # microcode (auto-detect + custom microcode)
+        detect_microcode
+        name_microcode=("${list_ucode[@]##*"/"}")
+        # show snapshot found during run "grub-mkconfig"
+        if [[ "${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}" = "true" ]]; then
+            printf "Found snapshot: %s\n" "$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}")"
+    boot_dir="${boot_directory}"
+    # convert /boot directory to root of GRUB (e.g /boot become /)
+    boot_dir_root_grub="$(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[@]##*"/"}")
+    # 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[@]##*"/"}")

-	# 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
+    # Initialize menu entries
+    IFS=$'\n'
+    for item in $(snapshot_list); do
+        [[ ${limit_snap_show} -le 0 ]] && break; # fix: limit_snap_show=0
+        IFS=$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 [[ "${GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND:-"true"}" = "true" ]]; then
+            printf "Found snapshot: %s\n" "$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
 }

-### Start ###
-printf "###### - Grub-btrfs: Snapshot detection started - ######\n" >&2 ;
-# if btrfs prog isn't installed, exit
+### Start
+printf "Detecting snapshots ...\n" >&2 ;
+# Only support btrfs snapshots
 test_btrfs
 # Delete existing config
-#rm -f --preserve-root "/boot/$grub_directory/grub-btrfs.cfg"
-> "/boot/$grub_directory/grub-btrfs.cfg"
+#rm -f --preserve-root "$grub_directory/grub-btrfs.cfg"
+> "$grub_directory/grub-btrfs.cfg"
 # Create mount point then mounting
 [[ ! -d $gbgmp ]] && mkdir -p $gbgmp
 mount -o subvolid=5 /dev/disk/by-uuid/$root_uuid $gbgmp/
@@ -526,37 +508,35 @@ count_limit_snap=0
 # detect uuid requirement
 check_uuid_required
 # Detects if /boot is a separate partition
-if [[ "$override_boot_partition_detection" == "true" ]]; then
-	printf "# Info: Override boot partition detection : enable \n" >&2 ;
-	boot_separate
+if [[ "${GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION:-"false"}" == "true" ]]; then
+    printf "Info: Override boot partition detection : enable \n" >&2 ;
+    boot_separate
 else
-	if [[ "$root_uuid" != "$boot_uuid" ]]; then
-		printf "# Info: Separate boot partition detected \n" >&2 ;
-		boot_separate
-	else
-		printf "# Info: Separate boot partition not detected \n" >&2 ;
-		boot_bounded
-	fi
+    if [[ "$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
 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 ;
+[[ $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 ${count_limit_snap} snapshot(s)\n" >&2 ;
+if [[ "${GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND:-"true"}" = "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 "${count_limit_snap}" ]]; then
-	print_error "No snapshots found."
+    print_error "No snapshots found."
 fi
-root_grub="$(make_system_path_relative_to_its_root /boot/$grub_directory)"
 # Make a submenu in GRUB (grub.cfg)
 cat << EOF
-submenu '${submenuname}' {
-	configfile "\${prefix}/grub-btrfs.cfg"
+submenu '${submenuname}' ${protection_authorized_users}${unrestricted_access_submenu}{
+    configfile "\${prefix}/grub-btrfs.cfg"
 }
 EOF
-printf "###### - Grub-btrfs: Snapshot detection ended   - ######\n" >&2 ;
-### End ###
+### End
--- a/17
+++ b/17
@@ -12,3 +12,20 @@ install:
 	@install -Dm644 -t "$(LIB_DIR)/systemd/system/" grub-btrfs.service
 	@install -Dm644 -t "$(LIB_DIR)/systemd/system/" grub-btrfs.path
 	@install -Dm644 -t "$(SHARE_DIR)/licenses/$(PKGNAME)/" LICENSE
+	@install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-install" "$(LIB_DIR)/initcpio/install/grub-btrfs-overlayfs"	# Arch Linux only
+	@install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-hook" "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs"		# Arch Linux only
+	@install -Dm644 -t "$(SHARE_DIR)/doc/$(PKGNAME)/" README.md
+	@install -Dm644 "initramfs/readme.md" "$(SHARE_DIR)/doc/$(PKGNAME)/initramfs-overlayfs.md"
+
+uninstall:
+	rm -f "$(DESTDIR)/etc/grub.d/41_snapshots-btrfs"
+	rm -f "$(DESTDIR)/etc/default/grub-btrfs/config"
+	rm -f "$(LIB_DIR)/systemd/system/grub-btrfs.service"
+	rm -f "$(LIB_DIR)/systemd/system/grub-btrfs.path"
+	rm -f "$(SHARE_DIR)/licenses/$(PKGNAME)/LICENSE"
+	rm -f "$(DESTDIR)/boot/grub/grub-btrfs.cfg"
+	rm -f "$(LIB_DIR)/initcpio/install/grub-btrfs-overlayfs" # Arch Linux only
+	rm -f "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs" # Arch Linux only
+	rm -rf "$(SHARE_DIR)/doc/$(PKGNAME)/" README.md
+	rm -rf "$(SHARE_DIR)/doc/$(PKGNAME)/initramfs-overlayfs.md"
+	rmdir --ignore-fail-on-non-empty "$(DESTDIR)/etc/default/grub-btrfs"
--- a/README.md
+++ b/README.md
@@ -9,19 +9,27 @@ This is a version 4.xx of grub-btrfs
 ### Description
 Improves Grub by adding "btrfs snapshots" to the Grub menu.

-You can start your system on a "snapshot" from the Grub menu.
-
+You can start your system on a "snapshot" from the Grub menu.  
 Supports manual snapshots, snapper, timeshift ...

-##### Warning : it isn't recommended to start on read-only snapshot
+##### Warning: booting on read-only snapshots can be tricky
+
+If you choose to do it, `/var/log` or even `/var` must be on a separate subvolume.  
+Otherwise, make sure your snapshots are writeable.  
+See [this ticket](https://github.com/Antynea/grub-btrfs/issues/92) for more info.
+
+This project includes its own solution.  
+Refer to the [documentation](https://github.com/Antynea/grub-btrfs/blob/master/initramfs/readme.md).
+
 ##
 ### What does grub-btrfs v4.xx do :
 * 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 Detect kernel, initramfs and intel/amd microcode in "/boot" directory on snapshots.
 * Automatically Create corresponding "menuentry" in `grub.cfg`
 * Automatically detect snapper and use snapper's snapshot description if available.
 * Automatically generate `grub.cfg` if you use the provided systemd service.
+
 ##
 ### Installation :
 #### Arch Linux
@@ -30,120 +38,38 @@ Supports manual snapshots, snapper, timeshift ...
 pacman -S grub-btrfs
 ```

-### Manual
+#### Manual

 * Run `make install` or look into Makefile for instructions on where to put each file.

-NOTE: Generate your Grub menu after installation for the changes to take effect.
-
+NOTE: Generate your Grub menu after installation for the changes to take effect.  
 On Arch Linux use `grub-mkconfig -o /boot/grub/grub.cfg`.

 ##
 ### Customization:

-You have the possibility to modify many parameters in `/etc/default/grub-btrfs/config`.
+You have the possibility to modify many parameters in `/etc/default/grub-btrfs/config`.  
+See [config file](https://github.com/Antynea/grub-btrfs/blob/master/config) for more information.

-* 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, weird reaction with snapper.
-	
-* 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"). 
-	
-	If "ascending" is chosen then 
-	
-	the $GRUB_BTRFS_LIMIT oldest subvolumes will populate the menu.
-
-* GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="true"
-	
-	Show snapshots found during run "grub-mkconfig".
-	
-* GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true"
-	
-	Show Total number of snapshots found during run "grub-mkconfig".
-
-* GRUB_BTRFS_NKERNEL=("kernel-custom")
-
-	Use it only if you have a custom kernel name
-
-* GRUB_BTRFS_NINIT=("initramfs-custom.img" "initrd.img-custom")
-
-	Use it only if you have a custom initramfs name.
-
-* GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img")
-
-	Use it only if you have custom intel-ucode.
-
-* GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker")
-
-	Ignore specific path during run "grub-mkconfig".
-	
-	For example: 
-	
-	If path is a directory `# Found Snapshot: 2016-03-31 10:24:41` **var/lib/docker/btrfs/subvolumes/...**
-	
-	use : `GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker")`
-	
-	If path is a subvolume : `# Found Snapshot: 2016-03-31 10:24:41` **@var/lib/docker/btrfs/subvolumes/...**
-	
-	use : `GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@var/lib/docker")`
-	
-	You can combine them
-	
-	use : `GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@var/lib/docker" "var/lib/docker")`
-
-
-* GRUB_BTRFS_SNAPPER_CONFIG="root"													
-
-	Snapper's config name to use.
-
-* GRUB_BTRFS_DISABLE="false"
-
-	Disable grub-btrfs.
-
-* GRUB_BTRFS_DIRNAME="grub"
-
-	Name of the grub folder in `/boot/`, might be grub2 on some distributions.
-
-* GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="false"
-
-	Change to "true" if you have a boot partition in a different subvolume.
-
-* GRUB_BTRFS_MKCONFIG=grub-mkconfig
-
-	Name or path of the 'grub-mkconfig' executable; might be 'grub2-mkconfig' on some distributions.
-	
 ##
 ### Automatically update grub
 If you would like Grub to automatically update when a snapshot is made or deleted:
-* Mount your subvolume which contains snapshots to `/.snapshots`
-* Use `systemctl start/enable grub-btrfs.path`
-* `grub-btrfs.path` automatically (re)generates `grub.cfg` when a modification appears in `/.snapshots`
+* Use `systemctl start/enable grub-btrfs.path`.
+* `grub-btrfs.path` automatically (re)generates `grub.cfg` when a modification appears in `/.snapshots` folder (by default).
+* If your snapshots aren't mounted in `/.snapshots`, you must modify the watch folder using `systemctl edit grub-btrfs.path`.  
+	* For example: Timeshift mount its snapshots in `/run/timeshift/backup/timeshift-btrfs/snapshots` folder.
+
+		Use `systemctl edit grub-btrfs.path`.
+		Then wrote:
+		```
+		[Path]
+		PathModified=/run/timeshift/backup/timeshift-btrfs/snapshots
+		```
+		and finally save.
+	* You can view your change to `systemctl cat grub-btrfs.path`.
+	* To revert change use `systemctl revert grub-btrfs.path`.
 ##
 ### Special thanks for assistance and contributions
 * [maximbaz](https://github.com/maximbaz)
-* [crossroads1112](https://github.com/crossroads1112)
-* [penetal](https://github.com/penetal)
-* [wesbarnett](https://github.com/wesbarnett)
-* [Psykar](https://github.com/Psykar)
-* [anyc](https://github.com/anyc)
-* [daftaupe](https://github.com/daftaupe)
-* [N-Parsons](https://github.com/N-Parsons)
+* [All contributors](https://github.com/Antynea/grub-btrfs/graphs/contributors)
 ##
--- a/121
+++ b/121
@@ -1,76 +1,111 @@
 #!/usr/bin/env bash

-# Name appearing in the Grub menu
-# Default: "Arch Linux snapshots"
+# Disable grub-btrfs.
+# Default: "false"
+#GRUB_BTRFS_DISABLE="true"
+
+# Name appearing in the Grub menu.
+# Default: "Use distribution information from /etc/os-release."
 #GRUB_BTRFS_SUBMENUNAME="Arch Linux snapshots"

-# Add a name ahead your snapshots entries in the Grub menu
+# Add a name ahead your snapshots entries in the Grub menu.
 # Default: "Snapshot:"
 #GRUB_BTRFS_PREFIXENTRY="Snapshot:"

-# Show full path snapshot or only name in the Grub menu
+# Show full path snapshot or only name in the Grub menu, weird reaction with snapper.
 # Default: "true"
-#GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true"
+#GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="false"

-# Custom title
-# shows/hides p"prefix" d"date" n"name" in the Grub menu, separator "/", custom order available
+# Custom title.
+# shows/hides p"prefix" d"date" n"name" in the Grub menu, separator "/", custom order available.
 # Default: "p/d/n"
 #GRUB_BTRFS_TITLE_FORMAT="p/d/n"

-# Limit the number of snapshots populated in the GRUB menu
+# Limit the number of snapshots populated in the GRUB menu.
 # Default: "50"
 #GRUB_BTRFS_LIMIT="50"

-# Sort the found subvolumes by newest first ("descending") or oldest first ("ascending") and show $GRUB_BTRFS_LIMIT first entries.
-# Default: "descending"
-#GRUB_BTRFS_SUBVOLUME_SORT="descending"
+# Sort the found subvolumes by "ogeneration" or "generation" or "path" or "rootid".
+# # See Sorting section to https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume#SUBCOMMAND
+# "-rootid" means list snapshot by new ones first.
+# Default: "-rootid"
+#GRUB_BTRFS_SUBVOLUME_SORT="+ogen,-gen,path,rootid"

 # Show snapshots found during run "grub-mkconfig"
 # Default: "true"
-#GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="true"
+#GRUB_BTRFS_SHOW_SNAPSHOTS_FOUND="false"

 # Show Total of snapshots found during run "grub-mkconfig"
 # Default: "true"
 #GRUB_BTRFS_SHOW_TOTAL_SNAPSHOTS_FOUND="true"

-# Use only if you have custom kernel name
-# Default:
-#GRUB_BTRFS_NKERNEL=("vmlinuz-linux")
+# By default, "grub-btrfs" automatically detects most existing kernels.
+# If you have one or more custom kernels, you can add them here.
+# Default: ("")
+#GRUB_BTRFS_NKERNEL=("kernel-custom" "vmlinux-custom")

-# Use only if you have custom initramfs name
-# Default:
-#GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img")
+# By default, "grub-btrfs" automatically detects most existing initramfs.
+# If you have one or more custom initramfs, you can add them here.
+# Default: ("")
+#GRUB_BTRFS_NINIT=("initramfs-custom.img" "initrd-custom.img" "otherinit-custom.gz")

-# Use only if you have custom intel-ucode
-# Default:
-#GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img")
+# By default, "grub-btrfs" automatically detects most existing microcodes.
+# If you have one or more custom microcodes, you can add them here.
+# Default: ("")
+#GRUB_BTRFS_CUSTOM_MICROCODE=("custom-ucode.img" "custom-uc.img "custom_ucode.cpio")

 # Ignore specific path during run "grub-mkconfig".
-# If path is a directory, # Found Snapshot: 2016-03-31 10:24:41 var/lib/docker/btrfs/subvolumes/...
-# use : GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker");
-# If path is a subvolume, # Found Snapshot: 2016-03-31 10:24:41 @var/lib/docker/btrfs/subvolumes/...
-# use : GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@var/lib/docker");
-# You can combine them
-# use : GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@var/lib/docker" "var/lib/docker")
-# Default: 
-GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker" "@var/lib/docker")
+# Only exact paths are ignored.
+# e.g : if `specific path` = @, only `@` snapshot will be ignored.
+# Default: ("@")
+GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("@")

+# Ignore prefix path during run "grub-mkconfig".
+# Any path starting with the specified string will be ignored.
+# e.g : if `prefix path` = @, all snapshots beginning with "@/..." will be ignored.
+# Default: ("var/lib/docker" "@var/lib/docker" "@/var/lib/docker")
+GRUB_BTRFS_IGNORE_PREFIX_PATH=("var/lib/docker" "@var/lib/docker" "@/var/lib/docker")
+
+# By default "grub-btrfs" automatically detects your boot partition,
+# either located at the system root or on a separate partition,
+# but cannot detect if it is in a subvolume.
+# Change to "true" if you have a boot partition in a different subvolume.
+# Default: "false"
+#GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="true"
+
+# Location of the folder containing the "grub.cfg" file.
+# Use by grub-btrfs to save the file "grub-btrfs.cfg".
+# Might be grub2 on some systems.
+# For example, on Fedora with EFI : "/boot/efi/EFI/fedora"
+# Default: "/boot/grub"
+#GRUB_BTRFS_GRUB_DIRNAME="/boot/grub2"
+
+# Location of kernels/initramfs/microcode.
+# Use by "grub-btrfs" to detect the boot partition and the location of kernels/initrafms/microcodes.
+# Default: "/boot"
+#GRUB_BTRFS_BOOT_DIRNAME="/boot"
+
+# Name/path of grub-mkconfig, use by "grub-btrfs.service"
+# Might be 'grub2-mkconfig' on some systems
+# For example, on Fedora : "/sbin/grub2-mkconfig"
+# Default: /usr/bin/grub-mkconfig
+#GRUB_BTRFS_MKCONFIG=/usr/bin/grub2-mkconfig
+
+# Snapper
 # Snapper's config name to use
 # Default: "root"
 #GRUB_BTRFS_SNAPPER_CONFIG="root"

-# Disable Grub-btrfs
+# Password protection management for submenu,snapshots
+# Refer to the Grub documentation https://www.gnu.org/software/grub/manual/grub/grub.html#Authentication-and-authorisation
+# and this comment https://github.com/Antynea/grub-btrfs/issues/95#issuecomment-682295660
+#
+# Add authorized usernames separate by comma (foo,bar)
+# When Grub's password protection is enabled, the superuser is authorized by default, it isn't necessary to add it
+# Default: ""
+#GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS="foo,bar"
+#
+# Disable authentication support for submenu of Grub-btrfs only (--unrestricted)
+# doesn't work if GRUB_BTRFS_PROTECTION_AUTHORIZED_USERS isn't empty
 # Default: "false"
-#GRUB_BTRFS_DISABLE="false"
-
-# Change to "true" if you have a boot partition in a different subvolume
-# Default: "false"
-#GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="false"
-
-# Might be grub2 on some systems ex. /boot/grub2/...
-# Default: "grub"
-#GRUB_BTRFS_DIRNAME="grub"
-
-# Might be 'grub2-mkconfig' on some systems
-# Default: /usr/bin/grub-mkconfig
-#GRUB_BTRFS_MKCONFIG=/usr/bin/grub2-mkconfig
+#GRUB_BTRFS_DISABLE_PROTECTION_SUBMENU="true"
--- a/grub-btrfs.service
+++ b/grub-btrfs.service
@@ -8,4 +8,4 @@ Environment="PATH=/sbin:/bin:/usr/sbin:/usr/bin"
 # Load environment variables from the configuration
 EnvironmentFile=/etc/default/grub-btrfs/config
 # Regenerate just '/boot/grub/grub-btrfs.cfg' if it exists and is not empty, else regenerate the whole grub menu
-ExecStart=/bin/bash -c 'if [ -s "/boot/${GRUB_BTRFS_DIRNAME:-grub}/grub-btrfs.cfg" ]; then /etc/grub.d/41_snapshots-btrfs; else ${GRUB_BTRFS_MKCONFIG:-/usr/bin/grub-mkconfig} -o /boot/${GRUB_BTRFS_DIRNAME:-grub}/grub.cfg; fi'
+ExecStart=/bin/bash -c 'if [ -s "${GRUB_BTRFS_DIRNAME:-/boot/grub}/grub-btrfs.cfg" ]; then /etc/grub.d/41_snapshots-btrfs; else ${GRUB_BTRFS_MKCONFIG:-/usr/bin/grub-mkconfig} -o ${GRUB_BTRFS_DIRNAME:-/boot/grub}/grub.cfg; fi' 
--- a/Linux/overlay_snap_ro-hook
+++ b/Linux/overlay_snap_ro-hook
@@ -0,0 +1,15 @@
+#!/usr/bin/ash
+
+run_latehook() {
+	local root_mnt="/new_root"
+	local current_dev=$(resolve_device "$root"); # resolve devices for blkid
+	if [[ $(blkid "${current_dev}" -s TYPE -o value) = "btrfs" ]] && [[ $(btrfs property get ${root_mnt} ro) != "ro=false" ]]; then # run only on a read only snapshot
+		local lower_dir=$(mktemp -d -p /)
+		local ram_dir=$(mktemp -d -p /)
+		mount --move ${root_mnt} ${lower_dir} # move new_root to lower_dir
+		mount -t tmpfs cowspace ${ram_dir}  #meuh!!! space, you can't test !
+		mkdir -p ${ram_dir}/upper
+		mkdir -p ${ram_dir}/work
+		mount -t overlay -o lowerdir=${lower_dir},upperdir=${ram_dir}/upper,workdir=${ram_dir}/work rootfs ${root_mnt}
+	fi
+}
--- a/Linux/overlay_snap_ro-install
+++ b/Linux/overlay_snap_ro-install
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+build() {
+    add_module btrfs
+    add_module overlay
+    add_binary btrfs
+    add_binary btrfsck
+    add_binary blkid
+    add_runscript
+}
+
+help() {
+    cat <<HELPEOF
+This hook uses overlayfs to boot on a read only snapshot.
+HELPEOF
+}
+
+# vim: set ft=sh ts=4 sw=4 et:
--- a/initramfs/readme.md
+++ b/initramfs/readme.md
@@ -0,0 +1,45 @@
+### Description :
+
+Booting on a snapshot in read-only mode can be tricky.  
+An elegant way is to boot this snapshot using overlayfs (included in the kernel ≥ 3.18).
+
+Using overlayfs, the booted snapshot will behave like a live-cd in non-persistent mode.  
+The snapshot will not be modified, the system will be able to boot correctly, because a writeable folder will be included in the ram.  
+(no more problems due to `/var` not open for writing)
+
+Any changes in this system thus started will be lost when the system is rebooted/shutdown.
+
+To do this, it is necessary to modify the initramfs.  
+This means that any snapshot that does not include this modified initramfs will not be able to benefit from it.  
+(except for separate boot partitions)
+#
+### Installation :
+#### Arch Linux
+1.
+`Pacman -S grub-btrfs`  
+Or if you use git  
+copy the `overlay_snap_ro-install` file to `/etc/initcpio/install/grub-btrfs-overlayfs`  
+copy the `overlay_snap_ro-hook` file to `/etc/initcpio/hooks/grub-btrfs-overlayfs`  
+You must rename the files. (I did it above)
+
+For example :  
+`overlay_snap_ro-install` to `grub-btrfs-overlayfs`  
+`overlay_snap_ro-hook` to `grub-btrfs-overlayfs`  
+Keep in mind that the files must have exactly the same name to ensure a match.
+
+2.
+Edit the file `/etc/mkinitcpio.conf`  
+Added hook `grub-btrfs-overlayfs` at the end of the line `HOOKS`.
+
+For example :  
+`HOOKS=(base udev autodetect modconf block filesystems keyboard fsck grub-btrfs-overlayfs)`  
+You notice that the name of the `hook` must match the name of the 2 installed files. (don't forget it)
+
+3.
+Re-generate your initramfs  
+`mkinitcpio -P` (option -P means, all preset present in `/etc/mkinitcpio.d`)
+
+#### Other distribution
+Refer to your distribution's documentation  
+or contribute to this project to add a paragraph.
+#
Author	SHA1	Message	Date
Antynea	9722f6732c	Corrects a mistake Corrects the duplicate that appeared Line16 should be : `@install -Dm644 "initramfs/Arch Linux/overlay_snap_ro-hook" "$(LIB_DIR)/initcpio/hooks/grub-btrfs-overlayfs" # Arch Linux only`	2020-10-22 21:19:54 +02:00
Antynea	0ed5adaf32	Fix indentation My IDE was set up incorrectly. Convert all tab indentation to space.	2020-10-22 07:07:30 +02:00
Antynea	d4b97415b0	Fix #116 (#118 ) * Fix #116 (#118) * Renames variable GRUB_BTRFS_DIRNAME to GRUB_BTRFS_GRUB_DIRNAME and improves its description * Adds variable GRUB_BTRFS_BOOT_DIRNAME, used to detect the boot partition and the location of kernels/initrafms/microcodes	2020-10-21 19:14:05 +02:00
Antynea	da36aa8847	Update header * Update header about read-only snapshots.	2020-10-15 16:27:32 +02:00
Antynea	d8df766554	Update README.md * Update link to /initramfs/readme	2020-10-14 15:29:50 +02:00
Antynea	9adce629f7	Boot on read-only snapshot (#115 ) * Create a initramfs folder & configuration files * create a initramfs folder * create Arch Linux folder * Add `HOOK/INSTALL` files to generate a custom initrafms for boot on read-only snapshot for Arch Linux. * Add readme file to initramfs folder * Makefile changes * Add readme file * Add readme file of initramfs-overlayfs * Add HOOK/INSTALL files for Arch Linux * Readme changes * Updates the documentation to be able to boot on a read-only snapshot. * Redesign readme again.	2020-10-14 15:17:07 +02:00
Antynea	3c5e741641	Modify "grub btrfs dirname" variable. (#113 ) * Modify "GRUB_BTRFS_DIRNAME" * Full path to Grub folder is now configurable (/boot is no longer hard coded). * Detection of the boot partition is now based on the location of the Grub folder. * Warning [see](https://github.com/Antynea/grub-btrfs/pull/113#issuecomment-705916729)	2020-10-09 15:50:02 +02:00
Antynea	fa65c3d6d9	move rmdir to end of uninstall section If rmdir fails, other commands are not executed, so move rmdir to end of uninstall section	2020-10-09 02:32:25 +02:00
Antynea	4493bdc6e4	Clean code Remove commented commands that are no longer needed.	2020-10-07 02:00:23 +02:00
Antynea	a7289b182a	Remove several variables not necessary For easier maintenance, remove several variables already present in the config file.	2020-10-07 00:36:06 +02:00
Antynea	0fe512776a	Modify the function which is used to ignore a path. (#112 ) Modify the function which is used to ignore a path. @ shouldn't be hardcoded. Create 2 separate functions to ignore a specific path or prefix path. In specific path, only exact paths are ignored. In prefix path, any path starting with the specified string will be ignored. e.g : if specific path = @, only @ snapshot will be ignored. if prefix path = @, all snapshots beginning with "@/..." will be ignored.	2020-10-06 23:19:41 +02:00
Antynea	6af193c47a	Add new path to ignore docker subvolume Many distributions now use "@" as the default subvolume. Add the following path "@/var/lib/docker" to ignore the docker subvolume. Fix: #110	2020-10-03 12:51:51 +02:00
Antynea	9a771d9842	Stop script if root partition isn't btrfs filesystem Add filesystem check on the root partition. If the filesystem isn't btrfs, stop execution. Update error message for btrfs-prog.	2020-10-01 19:37:43 +02:00
Antynea	64c08a0807	Update header Update header to reflect change on [Automatically update grub](https://github.com/Antynea/grub-btrfs#automatically-update-grub) section Remove many `#` characters	2020-10-01 19:28:45 +02:00
Antynea	c9b605153b	Redesign readme (#109 ) * Add more information Add more information. Due to the redesign of the "Customization" section of the readme file. * Redesign customization section Move information of customization section to config file	2020-09-29 13:39:20 +02:00
Antynea	7e922abefb	Update "Automatically update grub" section Update "Automatically update grub" section. Correct a mistake.	2020-09-28 00:58:21 +02:00
Antynea	d20439554e	Update "Automatically update grub" section Update "Automatically update grub" section. Trying to make it more understandable.	2020-09-28 00:54:45 +02:00
Antynea	ce8261395f	Update Automatically update grub section Timeshift use `/run/timeshift/backup/timeshift-btrfs/snapshots` mountpoint for its snapshots. Timeshift users must modify the monitoring path: ``` [Path] PathModified=/.snapshots ``` to ``` [Path] PathModified=/run/timeshift/backup/timeshift-btrfs/snapshots ```	2020-09-24 02:21:37 +02:00
Antynea	133c8ebfdb	Clean code Clean indentation/leading/trailing space	2020-09-16 21:07:42 +02:00
Antynea	2349282df5	Improved sorting of the subvolumes list (#107 ) * Improved sorting of the subvolumes list Add functionality to sort subvolume list by: rootid,gen,ogen,path Default: "-rootid" means list snapshot by new ones first See [Sorting section](https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-subvolume#SUBCOMMAND)	2020-09-16 19:16:18 +02:00
Antynea	041a9c6606	Microcode variable updated (#106 ) * Microcode variable updated * Modifying variable to reflect improved microcode detection * Update config Change "GRUB_BTRFS_INTEL_UCODE" to new variable "GRUB_BTRFS_CUSTOM_MICROCODE" * Update README.md Change "GRUB_BTRFS_INTEL_UCODE" to new variable "GRUB_BTRFS_CUSTOM_MICROCODE"	2020-09-16 18:25:11 +02:00
Antynea	7e5bfa597f	Update header * Update header Improve the warning section about "ro snapshots"	2020-09-16 17:05:17 +02:00
Antynea	f0382536fb	Update README.md automatic microcode detection: now detects amd microcode	2020-09-16 16:21:54 +02:00
Antynea	b50ad439d4	clean code * root_grub="$(make_system_path_relative_to_its_root /boot/$grub_directory)" no longer used	2020-09-16 16:17:06 +02:00
Antynea	5f40f30985	Remove Internationalization Internationalization has never been used. (default : english)	2020-09-16 14:02:02 +02:00
Antynea	d2c15acd72	Enhance microcode detection (#105 ) Add all default stock images listed by "grub" See [GRUB_EARLY_INITRD_LINUX_STOCK](https://www.gnu.org/software/grub/manual/grub/html_node/Simple-configuration.html) for more informations.	2020-09-16 13:54:21 +02:00
Christian Kotte	77d69aaa81	Update script output (#104 ) Script output is now the same as other grub-mkconfig output	2020-09-13 09:39:38 +02:00
Antynea	44ee10f5ef	Attempt to fix ignore specific path (#102 ) * Attempt to fix ignore specific path Attempt to fix ignore specific path #100 * Update config	2020-09-05 12:24:46 +02:00
Senya	9cb57dab40	Add uninstall to the Makefile (#99 )	2020-08-31 12:49:59 +02:00
Antynea	6bfdf07bbf	Add password protection support for the submenu (#97 ) * Add password protection support for the submenu Grub2 supports superuser and user access using passwords. #95 -Ability to add authorized users. -Possibility to disable password protection for the submenu. * Update config * Update README.md	2020-08-29 18:55:39 +02:00
Antynea	7f76eec16d	Update Name appearing in the Grub menu Name appearing in the Grub menu : Use distribution information from /etc/os-release by default	2020-08-28 04:22:13 +02:00
Antynea	a89834248c	Update README.md	2020-08-28 04:19:44 +02:00
Maxim Baz	b49e19ce30	Document how to boot on read-only snapshots, fix #92	2020-08-04 19:03:35 +02:00
Maxim Baz	9b863f027b	Ignore @ by default as it is never a snapshot, fix #96 , fix #90	2020-07-28 19:27:47 +02:00
darkdragon-001	44771d9756	Use distribution information from /etc/os-release by default. (#94 ) Fixes #87	2020-07-18 14:06:58 +02:00
Maxim Baz	18c6eebf31	Allow ignoring precise paths or names, fixes #90	2020-07-17 23:19:26 +02:00
Peter Gantner	6ff1fc7127	grub script: improve snapshot listing performance (#93 ) Btrfs filesystems may be slow when listing snapshots and calculating space usage for each. And that space information is not needed and never used in the scipt. So, add --disable-ununsed-space to all calls to btrfs. See: https://github.com/Antynea/grub-btrfs/issues/91 Co-authored-by: Peter G <nephros@pearl.crownest.nephros.org>	2020-07-17 22:43:27 +02:00
Thomas Winant	92eef3079d	Don't let the kernel parameters override the subvol for the snapshot (#85 ) Previously, the kernel parameters came after the `rootflags=subvol=<snapshot>` argument. This means that when the user's standard kernel parameters also contain a `rootflags=subvol=<root>`, it will override the subvol flag of the snapshot. So put the snapshot's subvol flag last.	2020-03-22 16:33:12 +01:00