mirror of
https://github.com/Antynea/grub-btrfs.git
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119 lines
3.7 KiB
Markdown
119 lines
3.7 KiB
Markdown
[](https://github.com/Antynea/grub-btrfs)
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## grub-btrfs
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This is a version 2.xx of grub-btrfs
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##### BTC donation address: 1Lbvz244WA8xbpHek9W2Y12cakM6rDe5Rt
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##
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### Description
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grub-btrfs, Include btrfs snapshots at boot options. (grub menu)
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##
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### What does grub-btrfs v2.xx do :
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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 custom 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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* GRUB_BTRFS_SUBMENUNAME="Arch Linux Snapshots"
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(Name menu appearing in grub.)
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* GRUB_BTRFS_PREFIXENTRY="Snapshot:"
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(Add a name ahead your snapshots entries.)
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* GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true"
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(Show full path snapshot or only name, weird reaction with snapper)
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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 grub-menu, separator "/", custom order available)
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* GRUB_BTRFS_NKERNEL=("vmlinuz-linux")
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(Use only if you have a 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 a 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_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
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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 number of snapshots found during run "grub-mkconfig")
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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, very useful with debian-like distributions)
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* GRUB_BTRFS_SNAPPER_CONFIG="root"
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(Snapper's config name to use)
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Generate grub.cfg (on Arch linux use 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 differents entries (e.g : Snapshot: 2018-01-03 15:08:41 @test1 )
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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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### Discussion
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Pour les francophones : https://forums.archlinux.fr/viewtopic.php?f=18&t=17177
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##
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### Special thanks for assistance and contributions
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* [maximbaz](https://github.com/maximbaz)
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* [crossroads1112](https://github.com/crossroads1112)
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* [penetal](https://github.com/penetal)
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* [wesbarnett](https://github.com/wesbarnett)
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* [Psykar](https://github.com/Psykar)
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* [anyc](https://github.com/anyc)
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* [daftaupe](https://github.com/daftaupe)
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* [N-Parsons](https://github.com/N-Parsons)
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##
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