arch-zfs-tools

A collection of tools I use to manage Arch under ZFS, hoping they can help somebody else :)

zbm-ucode-bundler.bash

Since ZfsBootMenu can't load the kernel while adding in the microcode, this script ensures there will always be an additional image with the ucode bundled with the initramfs.

Requires 3 positional parameters:

kernel name (eg. linux)
ucode name (eg. intel-ucode)
suffix to add to the generated files (eg. bundled-ucode)

Sample pacman hook:

[Trigger]
Operation = Install
Operation = Upgrade
Operation = Remove
Type = Package
Target = *

[Action]
Description = Generating kernel image with bundled microcode...
When = PostTransaction
Exec = /path/to/zbm-ucode-bundler.bash linux intel-ucode bundled-ucode

zbm-update-github.bash

Downloads the latest release of ZfsBootMenu from github and places it within the EFI folder.
It should work as long as an EFI entry has been added calling "zfsbootmenu.EFI".

zfs-snapshots-overview.bash

Quick way to get a simple overview of a pool's snapshots.
For each available pool shows:

the number of snapshots
the total amount of space used
the smallest snapshot(s)'s size and name(s)
the biggest snapshot(s)'s size and name(s)

zfs-snapshotter.bash

A simple bash script to take snapshots of ZFS dataset.
Just a handy way to manage a maximum number of snapshots.
NOTE: the snapshot suffix is just there to add a human readable note to snapshots. It won't prevent pruning old automatic snapshots.

Help reference

zfs-snapshotter usage:
  zfs-snapshotter <dataset name> <max snapshots # to keep> [-r] [<snapshot suffix>]
  
  -r take recursive snapshots

Sample usage as a pacman hook for periodic snapshots on kernel update

[Trigger]
Type = Package
Operation = Install
Operation = Upgrade
Operation = Remove
Target = linux

[Trigger]
Type = Path
Operation = Install
Operation = Upgrade
Operation = Remove
Target = usr/lib/modules/*/vmlinuz
Target = usr/lib/initcpio/*

[Action]
Description = Creating a backup BE...
When = PreTransaction
Exec = /usr/bin/sh -c '/path/to/zfs-snapshotter.bash zroot/e/ROOT/arch 3 "$(uname -r)"'