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A set of scripts and a short documentation describing how to build a network boot image simulating a PXELINUX-style boot process. Starting with QEMU 2.10 it is possible to boot a KVM guest over a network interface using DHCP/BOOTP. The boot process is triggered by the network boot firmware that is part of QEMU and follows the usual network boot pattern: a DHCP request is issued by the client and answered by a DHCP/BOOTP server. The DHCP reply will contain a TFPT server identification and a bootfile name. The client will retrieve the bootfile from the TFTP server, load it into memory and IPL it. A very common way of setting up a boot server has been defined by PXELINUX, an open source implementation of PXE. With PXELINUX the bootfile is a small network boot loader that will retrieve a potentially client-specific configuration file containing further instructions for the final boot process (kernel, ramdisk,...). The set of sample scripts contained in the netboot directory provide directions for a Linux distributor or a boot server administrator on how to build a network boot image usable for a simplified PXELINUX-style network boot setup for s390. Note that the sample scripts are implementing only a subset of PXELINUX functionality, specifically the config file parsing. In order to get full functionality, a more specialized boot loader program like petitboot or pxe-kexec must be used in the ramdisk. Further, a sample Dockerfile is provided along with instructions on how to build the network boot image in a Docker container. Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
22 lines
375 B
Docker
22 lines
375 B
Docker
#
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# Sample Dockerfile to build PXE-style boot image for KVM on s390
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#
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FROM s390x/ubuntu:16.04
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RUN apt-get update && apt-get install -y \
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linux-image-4.4.0-78-generic \
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make \
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wget \
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bzip2 \
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linux-headers-4.4.0-78-generic \
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gcc \
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kexec-tools \
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file
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RUN mkdir /netboot
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COPY . /netboot
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RUN cd /netboot && make -f Makefile.pxelinux.0 KERNEL_VERSION=4.4.0-78-generic
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