v4 (#62)

* Readme updated
* localization no longer supported
* New systemd service.
* 41_snapshots-btrfs, ahead updated
* Makefile added

10-update_grub.conf

@@ -1,7 +0,0 @@
-[Service]
-# Set the possible paths for `grub-mkconfig`
-Environment="PATH=/sbin:/bin:/usr/sbin:/usr/bin"
-# Load environment variables from the configuration
-EnvironmentFile=/etc/grub.d/41_snapshots-btrfs_config
-# Regenerate just '/boot/grub/grub-btrfs.cfg' if it exists, else regenerate the whole grub menu
-ExecStartPost=/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'

41_snapshots-btrfs

@@ -6,30 +6,32 @@
 # BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
 # Github: https://github.com/Antynea/grub-btrfs
 #
-# Purpose: Include btrfs snapshots at boot options (grub-menu).
+# Purpose:
+#   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
 #
 # 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 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.
 #
-# How to customize it:
+# Installation:
-# - Refer to config for the list of available options and their default values.
+# - Run `make install` or look into Makefile for instructions on where to put each file.
-# - Place your configurations to /etc/default/grub-btrfs/config.
 #
-# - Generate grub.cfg (on Arch Linux use grub-mkconfig -o /boot/$grub_directory/grub.cfg)
+# Customization:
+#  Refer to config for the list of available options and their default values.
+#  Place your configurations to /etc/default/grub-btrfs/config.
 #
-# - grub-btrfs automatically generates snapshots entries.
+# Automatically update Grub
-# - You will see it appear different entries (e.g : Snapshot: [2014-02-12 11:24:37] my snapshot name overkill)
+#  If you would like Grub to automatically update when a snapshots is made or deleted:
-#
+# - Mount your subvolume which contains snapshots to /.snapshots
-# Automatically update grub
+# - Use systemctl start/enable grub-btrfs.path
-#  If you would like grub to automatically update when Snapper timeline snapshots and cleanups occur, simply install 10-update_grub.conf in the following locations:
+#  grub-btrfs.path will automatically (re)generate grub.cfg when a modification appear in /.snapshots
-# - /etc/systemd/system/snapper-timeline.service.d/
-# - /etc/systemd/system/snapper-cleanup.service.d/
-# Once the configuration files are in place, systemctl daemon-reload should be run to reload the units and make the changes active.
 #
 # Special thanks for assistance and contributions:
 # - My friends
@@ -47,6 +49,7 @@ grub_btrfs_config="${sysconfdir}/default/grub-btrfs/config"
 
 [[ -f "$grub_btrfs_config" ]] && . "$grub_btrfs_config"
 . "$datarootdir/grub/grub-mkconfig_lib"
+. "${sysconfdir}/default/grub"
 
 ###################################################
 ### Variables in /etc/default/grub-btrfs/config ###

README.md

@@ -1,60 +1,51 @@
-[![GitHub release](https://img.shields.io/github/release/Antynea/grub-btrfs.svg)](https://github.com/Antynea/grub-btrfs)
+[![GitHub release](https://img.shields.io/github/release/Antynea/grub-btrfs.svg)](https://github.com/Antynea/grub-btrfs/releases)
-  
+![](https://img.shields.io/github/license/Antynea/grub-btrfs.svg)
+
 ## grub-btrfs
 
-This is a version 3.xx of grub-btrfs
+This is a version 4.xx of grub-btrfs
-##### BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
+##### BTC donation address: `1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt`
 ##
 ### Description
+Improves Grub by adding "btrfs snapshots" to the Grub menu.
 
-grub-btrfs, Include btrfs snapshots at boot options. (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
 ##
-### What does grub-btrfs v3.xx do :
+### What does grub-btrfs v4.xx do :
-
-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`
-* Automatically Create corresponding "menuentry" in grub.cfg , which ensures a very easy rollback.
-
 * Automatically detect snapper and use snapper's snapshot description if available.
+* Automatically generate `grub.cfg` if you use the provided systemd service.
 ##
-### How to customize it:
+### Installation :
+* Run `make install` or look into Makefile for instructions on where to put each file.
+* 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.
+You have the possibility to modify many parameters in `/etc/default/grub-btrfs/config`.
-Add this lines to /etc/default/grub:
 
 * GRUB_BTRFS_SUBMENUNAME="Arch Linux Snapshots"
 
-	(Name menu appearing in grub.)
+	(Name appearing in the Grub menu.)
 
 * GRUB_BTRFS_PREFIXENTRY="Snapshot:"
 
-	(Add a name ahead your snapshots entries.)
+	(Add a name ahead your snapshots entries in the Grub menu.)
 	
 * GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true"
 	
-	(Show full path snapshot or only name, weird reaction with snapper)
+	(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 grub-menu, separator "/", custom order available)
+ 	(Custom title, shows/hides p"prefix" d"date" n"name" in the Grub menu, separator "/", custom order available)
-
-* 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_LIMIT="50"
 
@@ -74,6 +65,18 @@ Add this lines to /etc/default/grub:
 	
 	(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")
@@ -82,44 +85,28 @@ Add this lines to /etc/default/grub:
 
 	(Snapper's config name to use)
 
-* GRUB_BTRFS_DISABLE="true"
+* GRUB_BTRFS_DISABLE="false"
 
 	(Disable grub-btrfs)
 
 * GRUB_BTRFS_DIRNAME="grub"
 
-	(Name of the grub folder on /boot/)
+	(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; this is 'grub2-mkconfig' on some systems)
+    (Name or path of the 'grub-mkconfig' executable; might be 'grub2-mkconfig' on some distributions)
-
-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 differents entries (e.g : Snapshot: 2018-01-03 15:08:41  @test1 )
 ##
 ### Automatically update grub
-
+If you would like Grub to automatically update when a snapshots is made or deleted:
-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:
+* Mount your subvolume which contains snapshots to `/.snapshots`
-
+* Use `systemctl start/enable grub-btrfs.path`
-- `/etc/systemd/system/snapper-timeline.service.d/`
+* `grub-btrfs.path` automatically (re)generate `grub.cfg` when a modification appear in `/.snapshots`
-- `/etc/systemd/system/snapper-cleanup.service.d/`
-
-Or copy `grub-btrfs.path` and `grub-btrfs.service` to `/etc/systemd/system/`
-
-Once the configuration files are in place, `systemctl daemon-reload` should be run to reload the units and make the changes active.
-
-##
-### Discussion
-Pour les francophones : https://forums.archlinux.fr/viewtopic.php?f=18&t=17177
 ##
 ### Special thanks for assistance and contributions
-
 * [maximbaz](https://github.com/maximbaz)
 * [crossroads1112](https://github.com/crossroads1112)
 * [penetal](https://github.com/penetal)