mirror of
https://github.com/Antynea/grub-btrfs.git
synced 2026-03-04 13:05:00 +08:00
128 lines
4.0 KiB
Markdown
128 lines
4.0 KiB
Markdown
[](https://github.com/Antynea/grub-btrfs/releases)
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## grub-btrfs
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This is a version 4.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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Improves Grub by adding "btrfs snapshots" to the Grub menu.
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You can start your system on a "snapshot" from the Grub menu.
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Supports manual snapshots, snapper ...
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##### Warning : it isn't recommended to start on read-only snapshot
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##
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### What does grub-btrfs v4.xx do :
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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.
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* Automatically Create corresponding "menuentry" in `grub.cfg`
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* Automatically detect snapper and use snapper's snapshot description if available.
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* Automatically generate `grub.cfg` if you use the provided systemd service.
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##
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### Installation :
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#### Arch Linux
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```
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pacman -S grub-btrfs
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```
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### Manual
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* Run `make install` or look into Makefile for instructions on where to put each file.
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NOTE: Generate your Grub menu after installation for the changes to take effect. (on Arch Linux use `grub-mkconfig -o /boot/grub/grub.cfg`)
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##
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### Customization:
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You have the possibility to modify many parameters in `/etc/default/grub-btrfs/config`.
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* GRUB_BTRFS_SUBMENUNAME="Arch Linux Snapshots"
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(Name appearing in the Grub menu.)
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* GRUB_BTRFS_PREFIXENTRY="Snapshot:"
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(Add a name ahead your snapshots entries in the Grub menu.)
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* GRUB_BTRFS_DISPLAY_PATH_SNAPSHOT="true"
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(Show full path snapshot or only name in the Grub menu, 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 the Grub menu, separator "/", custom order available)
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* GRUB_BTRFS_LIMIT="50"
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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_NKERNEL=("kernel-custom")
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(Use it only if you have a custom kernel name)
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* GRUB_BTRFS_NINIT=("initramfs-custom.img" "initrd.img-custom")
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(Use it only if you have a custom initramfs name)
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* GRUB_BTRFS_INTEL_UCODE=("intel-ucode.img")
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(Use it only if you have custom intel-ucode)
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* GRUB_BTRFS_IGNORE_SPECIFIC_PATH=("var/lib/docker")
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(Ignore specific path during run "grub-mkconfig")
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* GRUB_BTRFS_SNAPPER_CONFIG="root"
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(Snapper's config name to use)
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* GRUB_BTRFS_DISABLE="false"
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(Disable grub-btrfs)
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* GRUB_BTRFS_DIRNAME="grub"
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(Name of the grub folder in `/boot/`, might be grub2 on some distributions )
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* GRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION="false"
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(Change to "true" if you have a boot partition in a different subvolume)
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* GRUB_BTRFS_MKCONFIG=grub-mkconfig
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(Name or path of the 'grub-mkconfig' executable; might be 'grub2-mkconfig' on some distributions)
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##
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### Automatically update grub
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If you would like Grub to automatically update when a snapshots is made or deleted:
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* Mount your subvolume which contains snapshots to `/.snapshots`
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* Use `systemctl start/enable grub-btrfs.path`
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* `grub-btrfs.path` automatically (re)generate `grub.cfg` when a modification appear in `/.snapshots`
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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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