71 lines
1.5 KiB
Bash
Executable File
71 lines
1.5 KiB
Bash
Executable File
#!/bin/sh -xe
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#
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# Copyright 2016 (C) NetApp, Inc.
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# Author: Ben Swartzlander <ben@swartzlander.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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DISK_NAME=$1
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BR_OUTPUT=output-$1
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if [ -z "$DISK_NAME" ] ; then
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echo Specify disk name
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exit 2
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fi
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SIZE=120m
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DISK_QCOW=$DISK_NAME.qcow2
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TEMP_QCOW=/tmp/temp.qcow2
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NBD=/dev/nbd0
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PART=${NBD}p1
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MOUNT=/mnt/tmp
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echo Creating temp qcow2
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rm -f $TEMP_QCOW
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qemu-img create -f qcow2 $TEMP_QCOW $SIZE
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echo Loading NBD module
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sudo modprobe nbd max_part=15
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echo Creating NBD from qcow2
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sudo qemu-nbd -c $NBD -f qcow2 $TEMP_QCOW
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echo Writing partition table
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sudo parted -s $NBD -- mklabel msdos mkpart primary ext2 4MiB -1s set 1 boot on
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echo Copying boot block
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sudo dd if=$BR_OUTPUT/images/syslinux/mbr.bin of=$NBD bs=440 count=1
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echo Creating filesystem
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sudo mkfs.ext2 -L root -E nodiscard $PART
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echo Mounting filesystem
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sudo mkdir -p $MOUNT
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sudo mount $PART $MOUNT
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echo Writing root FS
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sudo tar -C $MOUNT -xf $BR_OUTPUT/images/rootfs.tar
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echo Installing syslinux
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sudo $BR_OUTPUT/host/sbin/extlinux -z --install $MOUNT/boot
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echo Unmounting filesystem
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sudo umount $MOUNT
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echo Deleting NBD
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sudo qemu-nbd -d $NBD
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echo Unloading NBD module
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sudo rmmod nbd
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echo Compressing qcow2
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rm -f $DISK_QCOW
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qemu-img convert -c -f qcow2 -O qcow2 $TEMP_QCOW $DISK_QCOW
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rm -f $TEMP_QCOW
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ls -lh $DISK_QCOW
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echo Done
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