openstack
/
diskimage-builder
Code Issues Proposed changes
diskimage-builder/diskimage_builder/elements/iso
History
Mateusz Kowalski 3b22ee8784
Change paths for bootloader files in iso element 
This PR updates locations for files used by the bootloader depending on
the target operating system built. The current logic does not take into
account latest versions of operating systems and makes it impossible to
build ISOs against those.

With this change it is possible to correctly build CentOS 8, Ubuntu
18.04 and Ubuntu 20.04 images.

Closes-Bug: #1916913
Change-Id: I3ed0041640f539e82805d03ba26fe46217f3ac3c
 		2021-03-03 11:01:14 +01:00
..
cleanup.d Change paths for bootloader files in iso element 2021-03-03 11:01:14 +01:00
post-install.d Change paths for bootloader files in iso element 2021-03-03 11:01:14 +01:00
README.rst Remove the deprecated ironic-agent element 2021-01-21 14:06:08 +01:00
element-deps Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
package-installs.yaml Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
pkg-map Change paths for bootloader files in iso element 2021-03-03 11:01:14 +01:00

README.rst

iso

Generates a bootable ISO image from the kernel/ramdisk generated by the elements baremetal, ironic-python-agent-ramdisk (from ironic-python-agent-builder) or ramdisk. It uses isolinux to boot on BIOS machines and grub to boot on EFI machines.

This element has been tested on the following distro(s): * ubuntu * fedora * debian

NOTE: For other distros, please make sure the isolinux.bin file exists at /usr/lib/syslinux/isolinux.bin.

baremetal element

When used with baremetal element, this generates a bootable ISO image named <image-name>-boot.iso booting the generated kernel and ramdisk. It also automatically appends kernel command-line argument 'root=UUID=<uuid-of-the-root-partition>'. Any more kernel command-line arguments required may be provided by specifying them in DIB_BOOT_ISO_KERNEL_CMDLINE_ARGS.

NOTE: It uses pre-built efiboot.img by default to work for UEFI machines. This is because of a bug in latest version of grub[1]. The user may choose to avoid using pre-built binary and build efiboot.img on their own machine by setting the environment variable DIB_UEFI_ISO_BUILD_EFIBOOT to 1 (this might work only on certain versions of grub). The current efiboot.img was generated by the method build_efiboot_img() in 100-build-iso on Ubuntu 13.10 with grub 2.00-19ubuntu2.1.

ramdisk element

When used with ramdisk element, this generates a bootable ISO image named <image-name>.iso booting the generated kernel and ramdisk. It also automatically appends kernel command-line argument 'boot_method=vmedia' which is required for Ironic drivers iscsi_ilo.

ironic-python-agent-ramdisk element

When used with ironic-python-agent-ramdisk element, this generates a bootable ISO image named <image-name>.iso which boots the agent kernel and agent ramdisk.

REFERENCES

[1] https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1378658