config.yaml

SYNOPSIS

/etc/zfsbootmenu/config.yaml

DESCRIPTION

The YAML file /etc/zfsbootmenu/config.yaml controls the generation of ZFSBootMenu images by generate-zbm(8).

SECTIONS

The configuration is divided into several logical sections as keys of a YAML map. The value of each section is itself a YAML map.

Global

ManageImages

This must be set to true before generate-zbm will attempt to perform any action (e.g., image creation or pruning old files).

InitCPIO

Set to true to use mkinitcpio instead of dracut to create ZFSBootMenu images.

DracutConfDir

The path of the dracut configuration directory for ZFSBootMenu. This MUST NOT be the same location as the system dracut.conf.d, as the configuration files there interfere with the creation of the ZFSBootMenu initramfs. If unspecified, a default value of /etc/zfsbootmenu/dracut.conf.d is assumed. This value is ignored when Global.InitCPIO is true.

InitCPIOConfig

The path to a mkinitcpio configuration file for ZFSBootMenu. The zfsbootmenu hook will be forcefully added when generate-zbm invokes mkinitcpio using a command-line argument and does not need to be specified in the HOOKS array in the configuration file. This value is ignored when Global.InitCPIO is not true.

InitCPIOHookDirs

A single path or an array of paths to mkinitcpio hook directories. When specifying a custom directory for the zfsbootmenu hook, it is generally required to also specify the default location as well. This option is ignored when Global.InitCPIO is not true.

BootMountPoint

In general, this should be the location of your EFI System Partition. generate-zbm will ensure that this is mounted when images are created and, if generate-zbm does the mounting, will unmount this filesystem on exit. When this parameter is not specified, generate-zbm will not verify or attempt to mount any filesystems.

Version

A specific ZFSBootMenu version string to use in versioned output images. In the string, the value %{current} will be replaced with the release version of ZFSBootMenu. The default value is simply %{current}.

DracutFlags

An array of additional arguments that will be passed to dracut when generating an initramfs. This option is ignored when Global.InitCPIO is true.

InitCPIOFlags

An array of additional arguments that will be passed to mkinitcpio when generating an initramfs. This option is ignored when Global.InitCPIO is not true.

PreHooksDir

The path of the directory containing executables that should be executed after BootMountPoint has been mounted. Files in this directory should be +x, and are executed in the order returned by a shell glob. The exit code of each hook is ignored.

PostHooksDir

The path of the directory containing executables that should be executed after all images have been created and any file pruning has taken place. Files in this directory should be +x, and are executed in the order returned by a shell glob. The exit code of each hook is ignored.

Kernel

CommandLine

If you're making a unified EFI file or a syslinux configuration, this is the command line passed to the boot image.

Path

The full path to a specific kernel to use when making the boot images. If not specified, generate-zbm will try to pick a reasonable kernel.

Version

A specific kernel version to use, or a glob used to match possible kernel versions. The value %{current} will be replaced with the output of uname -r. For globs, the highest version matching the glob will be selected. If not set, generate-zbm will try to parse the path of the selected kernel filename for a version.

Prefix

The prefix to use for the names of ZFSBootMenu images. By default, the prefix is extracted from the input kernel name.

Components

Enabled

When true, generate-zbm will create separate ZFSBootMenu kernel and initramfs images. The default value is false.

ImageDir

The destination directory for separate initramfs and kernel images.

Versions

When false or 0, image versioning will be disabled; generate-zbm will not use its Global.Version parameter to name outputs, and will keep exactly one backup copy of any image it would overwrite.

When true (which behaves as 1) or any positive integer, generate-zbm will append the value of Global.Version to every image it produces, followed by a revision as _$revision. generate-zbm will save Components.Versions revisions of all images with versions matching the current value of Global.Version. In addition, generate-zbm will save the highest revision of the most recent Components.Versions image versions distinct from Global.Version.

Components.syslinux

Enabled

When true, syslinux configuration generation is enabled. The default value is false.

Config

The path of the syslinux configuration file to produce.

EFI

Enabled

When true, generate-zbm will create unified UEFI bundles. The default value is false.

ImageDir

The destination directory for unified EFI files.

Versions

Behaves similarly to Components.Versions, but acts on files matching the UEFI bundle naming scheme.

Stub

The path to the EFI stub loader used to boot the unified bundle. If not set, a default of /usr/lib/gummiboot/linuxx64.efi.stub is assumed.

EXAMPLE

The following example will write separate, unversioned ZFSBootMenu kernel and initramfs images to /boot/efi/EFI/zbm, keeping a backup for each file that would be overwritten when creating the new images. In addition, a versioned UEFI bundle will be stored in the same directory, where two prior revisions of the current version and the highest revision of each of the two most recent prior versions will be retained.

Global:
  ManageImages: true
  BootMountPoint: /boot/efi
  DracutConfDir: /etc/zfsbootmenu/dracut.conf.d
Components:
  ImageDir: /boot/efi/EFI/zbm
  Versions: false
  Enabled: true
  syslinux:
    Config: /boot/syslinux/syslinux.cfg
    Enabled: false
EFI:
  ImageDir: /boot/efi/EFI/zbm
  Versions: 2
  Enabled: true
Kernel:
  CommandLine: ro quiet loglevel=0

SEE ALSO

generate-zbm(8) zfsbootmenu(7)