diskimage-builder

History

Ramakrishnan G af629c914c Support custom kernel cmdline args for deploy iso This commit adds support for providing custom kernel cmdline args while building deploy ISO. This is useful for adding kernel cmdline like 'console=ttyS1' in environment (assuming all bare metals have been configured to output to COM2 in BIOS). Closes-Bug: 1451634 Change-Id: I20b04d9d104cfe46df0439c3f567a721a27e186a		2015-06-01 15:40:01 +00:00
..
cleanup.d	Support custom kernel cmdline args for deploy iso	2015-06-01 15:40:01 +00:00
post-install.d	UEFI secure boot support for iso element.	2015-03-10 00:39:14 -07:00
element-deps	UEFI secure boot support for iso element.	2015-03-10 00:39:14 -07:00
package-installs.yaml	UEFI secure boot support for iso element.	2015-03-10 00:39:14 -07:00
pkg-map	UEFI secure boot support for iso element.	2015-03-10 00:39:14 -07:00
README.rst	Create docs site containing element READMEs	2015-02-10 11:45:35 -08:00

README.rst

===
iso
===
Generates a bootable ISO image from the kernel/ramdisk generated by the
elements ``baremetal`` 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

**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``.

**REFERENCES**

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