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ZFSBootMenu v1.2
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@zdykstra zdykstra released this 22 Jun 23:47
v1.2
cd9de45

This release features substantial code and idea contributions from @ahesford . Thank you for all of your help writing features, debugging code and improving documentation.

Snapshot overhaul

Previously, snapshots could be cloned to a boot environment with a pre-generated, and often long, BE name. Substantial quality of life improvements were made here, including:

  • Add the ability to do a full zfs send | zfs recv clone from a local snapshot. This lets you establish a new boot environment that is not dependent on any other environments or snapshots.
  • Add the ability to clone and promote a snapshot, or simply clone it.
  • When cloning a snapshot, local ZFS properties of the parent filesystem are now transferred to the clone.
  • For all snapshot operations, you can now directly enter a boot environment name. This name is checked for character validity, and to confirm that it is not already taken.

Always up-to-date menu system

Any time you transition from one menu to another (Snapshots, Kernels, recovery shell), the list of boot environments and kernels is completely regenerated. This helps remove potential disconnects between the state of your pool and boot environments and the ZFSBootMenu interface.

UEFI bundle improvements

If you create unversioned UEFI bundles for static boot entries, generate-zbm will now create a -backup file for you on upgrade. This will allow you a recovery option if the active UEFI bundle has a problem.

Protect against missing kernel modules

When creating a new initramfs, the zfsbootmenu Dracut module needs to install a number of ZFS-related kernel modules. Previously, the modules were installed through a Dracut helper function that did not verify if the copy succeeded. This process has been reworked to ensure that all of the required kernel modules are installed in the initramfs, or the creation of the image is marked as a failure. If it is marked as a failure, existing/current images are not deleted or otherwise replaced.

Set default kernel

Much like setting a default boot environment, you can now set a default kernel for a specific boot environment. You no longer need to manually set a kernel version in your booted OS, you can simply do it from the menu!

Shellcheck

On commit, the shell scripts that power the boot menu and Dracut setup are run through a validator to check for common errors and pitfalls. This can help reduce some classes of bugs.

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