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s390x architecture uses zipl as bootloader. When used in combination with the vm element it replaces the existing bootloader element. It's mandatory for s390x vm images. Use cases --------- * Allow users to create s390x images that run on nova with s390x libvirt/kvm backend * Building nodepool images for s390x third party CI Supported Distros ----------------- The following listing shows all Distros that officially support s390x and how those Distros are supported in DIB with this patch. * SLES - not supported (SLES is not supported in DIB) * RHEL - not suppoprted (RHEL is not supported as KVM guest on s390x, therefore there's no rhel7 qcow image for s390x available like it is for other archictectures) * Ubuntu - supported Ubuntu images can for example be built using the following commands: $ disk-image-create ubuntu-minimal zipl vm $ disk-image-create ubuntu-minimal zipl $ disk-image-create ubuntu zipl vm Testing ------- Cross architecture building of s390x images is not supported so far. The plan is to set up a ThirdParty CI that builds the image for s390x and provides the logs. Co-Authored-By: Andreas Scheuring <andreas.scheuring@de.ibm.com> Co-Authored-By: Holger Smolinsky <holger@smolinski.name> Co-Authored-By: Zhiguo Deng <bjzgdeng@linux.vnet.ibm.com> Co-Authored-By: Arne Recknagel <arne.recknagel@hotmail.com> Closes-Bug: #1730641 Change-Id: I576e7edda68da12e97c60af38f457915efe7b934
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zipl
Zipl is the bootloader for s390x.
This element installs zipl on the base device holding the /boot directory on the system. It's mandatory for building s390x images. It replaces the bootloader element (which would install grub2 by default).
This element has been tested with ubuntu and ubuntu-minimal distro.
Arguments
DIB_ZIPL_DEFAULT_CMDLINE
sets the CMDLINE parameters that are appended to the zipl.conf parameter configuration. It defaults to 'LANG=en_US.UTF-8 console=ttyS0 console=ttyS1'