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@@ -5,54 +5,86 @@ set -e
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. /etc/default/grub
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### variables modifiable ###
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## nom du sous-menu
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submenuname="ArchLinux Snapshots"
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## préfixe de l'entrée
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prefixentry="Snapshot"
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## nom(s) du ou des kernel(s)
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nkernel=("vmlinuz-linux")
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## nom(s) de(s) l'init
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ninit=("initramfs-linux.img" "initramfs-linux-fallback.img")
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## fr: nom du sous-menu
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## en: Name of the submenu
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submenuname=${GRUB_BTRFS_SUBMENUNAME:-"ArchLinux Snapshots"}
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## fr: préfixe de l'entrée
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## en: Prefix entry
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prefixentry=${GRUB_BTRFS_PREFIXENTRY:-"Snapshot"}
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## fr: nom(s) du ou des kernel(s)
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## en: Name(s) of the kernel(s)
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nkernel=("${GRUB_BTRFS_NKERNEL[@]:-vmlinuz-linux}")
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## fr: nom(s) de(s) l'init
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## en: Name(s) of the init(s)
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ninit=("${GRUB_BTRFS_NINIT[@]:-initramfs-linux.img initramfs-linux-fallback.img}")
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## fr: nom du microcode intel
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## en: Name intel-ucode
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intel_ucode=("${GRUB_BTRFS_INTEL_UCODE[@]:-intel-ucode.img}")
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#######################
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### DÉBUT DU SCRIPT ###
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### NE PAS TOUCHER ###
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#######################
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## paramêtre des chaînes --hint
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###########################
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### fr: DÉBUT DU SCRIPT ###
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### en: NAME OF SCRIPT ###
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### fr: NE PAS TOUCHER ###
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### en: DO NOT TOUCH ###
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###########################
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## fr: internationalisation
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## en: Internationalization
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export TEXTDOMAIN=grub-btrfs-git
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export TEXTDOMAINDIR="/usr/share/locale"
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## fr: paramêtre des chaînes --hint
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## en: Parameter of the chains --hint (Translation unclear)
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pboot=$(${grub_probe} --target="hints_string" "/boot" 2>/dev/null)
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## uuid de la partition root
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## fr: uuid de la partition root
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## en: UUID of the root partition
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uuid=$(${grub_probe} "/" --target="fs_uuid" 2>/dev/null)
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## uuid de la partition boot
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## fr: uuid de la partition boot
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## en: UUID of the boot partition
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buuid=$(${grub_probe} --target="fs_uuid" "/boot" 2>/dev/null)
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## paramêtre passé au kernel
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## fr: paramêtre passé au kernel
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## en: Parameters passed to the kernel
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params="$GRUB_CMDLINE_LINUX $GRUB_CMDLINE_LINUX_DEFAULT"
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# on affiche le menu
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# fr: on affiche le menu
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# en: Display the menu
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echo "submenu '$submenuname' {"
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# on traite la variable kernel
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# fr: on traite la variable kernel
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# en: Treat the kernel variables (Translation unclear)
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for kernel in ${nkernel[@]}; do
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# on test si le(s) nom(s) du(des) kernel existe(nt), autrement on affiche une erreur et on sort
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if [ ! -f /boot/$kernel ]; then echo "/boot/$kernel: Fichier inexistant" >&2; exit 1; fi
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# on vérifie le nombre de kernel présent, si >1 on crée un menu
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# fr: on test si le(s) nom(s) du(des) kernel existe(nt), autrement on affiche une erreur et on sort
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# en: Check the specified kernel(s) exist, if it/they don't, display an error and exit
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if [ ! -f /boot/$kernel ]; then gettext_printf $"Error: /boot/$kernel, kernel does not exist" >&2; exit 1; fi
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# fr: on vérifie le nombre de kernel présent, si >1 on crée un menu
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# en: If there are >1 kernels, create a menu
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if [ ${#nkernel[*]} != 1 ]; then echo " submenu '$kernel' {
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submenu '---> Kernel: $kernel <---' { echo }"; fi
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# On liste les snapshots présent sur le système de fichier
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for item in $($bindir/btrfs subvolume list -s / --sort=-ogen | $bindir/awk '{print $NF}'); do
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# On écarte les snapshots avec un statut de suppression
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# fr: On liste les snapshots présent sur le système de fichier
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# en: List filesystem snapshots
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for item in $($bindir/btrfs subvolume list -sa / --sort=-ogen | $bindir/awk '{gsub(/^["<FS_TREE>/"]+/,"",$NF);print $NF}'); do
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# fr: On écarte les snapshots avec un status de suppression
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# en: Discard deleted snapshots
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if [ $item = "DELETED" ]; then continue; fi
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# on crée un menu pour chaque snapshot présent
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echo " submenu '$prefixentry $item' {"
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# si plusieurs kernel on été trouvé, on affiche un titre indicatif
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# fr: affiche la liste des snapshots trouvés
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# en: Output name of snapshot
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date_time=$($bindir/btrfs subvolume list -sa / | $bindir/grep $item | $bindir/cut -d" " -f 11-12)
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gettext_printf $"Found Snapshot: %s\n" "$item $date_time" >&2
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# fr: on crée un menu pour chaque snapshot présent (nom + date de création)
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# en: Create a menu for remaining snapshots (name + creation date)
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echo " submenu '$prefixentry $item [$date_time]' {"
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# fr: si plusieurs kernel on été trouvé, on affiche un titre indicatif
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# en: if more than one kernel is found, create a menu
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if [ ${#nkernel[*]} != 1 ]; then echo " submenu '---> Kernel: $kernel <---' { echo }"; fi
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# on traite la variable de l'initframs
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# fr: on traite la variable de l'initramfs
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# en: Treat the initramfs variables (Translation unclear)
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for init in ${ninit[@]}; do
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# on test si le(s) nom(s) du(des) initframs existe(nt), autrement on affiche une erreur et on sort
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if [ ! -f /boot/$init ]; then echo "/boot/$init: Fichier inexistant" >&2; exit 1; fi
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# on traite chaque entrée des snapshots avec leurs kernel et initframs respectifs
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# fr: on test si le(s) nom(s) du(des) initramfs existe(nt), autrement on affiche une erreur et on sort
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# en: Check the specified initramfs(es) exist, if it/they don't, display an error and exit
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if [ ! -f /boot/$init ]; then gettext_printf $"Error: /boot/$init, initramfs does not exist" >&2; exit 1; fi
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# fr: on traite chaque entrée des snapshots avec leurs kernel et initramfs respectifs
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# en: Specify a kernel and initramfs for every snapshot
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echo "\
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menuentry '$item $init' --class arch --class gnu-linux --class gnu --class os "\$menuentry_id_option" 'gnulinux-snapshots-$uuid'{
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load_video
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@@ -63,24 +95,42 @@ for kernel in ${nkernel[@]}; do
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search --no-floppy --fs-uuid --set=root $buuid
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fi
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echo 'Loading Linux snapshot ...'"
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# on vérifie l'emplacement de la partition /boot
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# fr: on vérifie l'emplacement de la partition /boot
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# en: Check the location of the /boot partition
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if [ $uuid = $buuid ]; then
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echo "\
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linux /$item/boot/$kernel root=UUID=$uuid rw rootflags=subvol=$item $params
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echo 'Loading initial ramdisk ...'
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echo 'Loading initial ramdisk ...'"
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# fr: on vérifie la présence du microcode intel
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# en: Check intel microcode exist
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if [ -f /boot/$intel_ucode ]; then
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echo "\
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initrd /$item/boot/$intel_ucode /$item/boot/$init"
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else
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echo "\
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initrd /$item/boot/$init"
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fi
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else
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echo "\
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linux /$kernel root=UUID=$uuid rw rootflags=subvol=$item $params
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echo 'Loading initial ramdisk ...'
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echo 'Loading initial ramdisk ...'"
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# fr: on vérifie la présence du microcode intel
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# en: Check intel microcode exist
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if [ -f /boot/$intel_ucode ]; then
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echo "\
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initrd /$intel_ucode /$init"
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else
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echo "\
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initrd /$init"
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fi
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fi
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echo "\
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}"
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done
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echo " }"
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done
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# on oubli pas de fermer le menu si plusieurs kernels ont été trouvé
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# fr: on oubli pas de fermer le menu si plusieurs kernels ont été trouvé
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# en: Don't forget to close menus if more than one kernel is found
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if [ ${#nkernel[*]} != 1 ]; then echo " }"; fi
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done
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echo "}"
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41
README.md
41
README.md
@@ -1,4 +1,41 @@
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grub-btrfs
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==========
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### grub-btrfs
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This is a version 0.xx of grub-btrfs
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#### Description
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grub-btrfs, add support for btrfs snapshots into grub menu
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#### What does grub-btrfs v0.xx do :
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Simple rollback using snapshots you made previous.
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Makes a list of all snapshots, kernels, initramfs present on the filesystem and then creates a corresponding entered with name and date of snapshots in grub.cfg, which ensures a very easy rollback.
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#### How to use it :
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1. Add lines to /etc/default/grub as needed, defaults listed as examples:
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2.
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* submenuname = name menu appear in grub ( e.g: GRUB_BTRFS_SUBMENUNAME="ArchLinux Snapshots" )
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* prefixentry = add a name ahead your snapshots entries ( e.g: GRUB_BTRFS_PREFIXENTRY="Snapshot" )
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* nkernel= name kernel you use it ( e.g: GRUB_BTRFS_NKERNEL=("vmlinuz-linux") )
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* ninit= name initramfs (ramdisk) you use it ( e.g: GRUB_BTRFS_NINIT=("initramfs-linux.img" "initramfs-linux-fallback.img") )
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* intel_ucode= name intel microcode you use it ( e.g: GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img") )
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2. Generate grub.cfg (on Archlinux is grub-mkconfig -o /boot/grub/grub.cfg )
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grub-btrfs automatically generates snapshots entries.
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You will see it appear different entries, e.g : Prefixentry name of snapshot [2013-02-11 04:00:00]
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#### Warning
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Version 0.xx detect kernels,initramfs,intel microcode only in boot partition, not in snapshot.
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If kernels,initramfs,intel microcode, are present in boot partition but not in snapshot, entry will be created but not fonctional, you don't boot it.
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Version 1.xx will do it, release soon.
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BIN
localisation/fr/grub-btrfs-git.mo
Normal file
BIN
localisation/fr/grub-btrfs-git.mo
Normal file
Binary file not shown.
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