Merge "Create new partitioning-sfdisk element."

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Jenkins 2016-03-12 20:00:11 +00:00 committed by Gerrit Code Review
commit 2a10525efe
4 changed files with 81 additions and 0 deletions

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===================
partitioning-sfdisk
===================
Sets up a partitioned disk using sfdisk, according to user needs.
Environment Variables
---------------------
DIB_PARTITIONING_SFDISK_SCHEMA
: Required: Yes
: Default: 2048,,L *
0 0;
0 0;
0 0;
: Description: A multi-line string specifying a disk schema in sectors.
: Example: ``DIB_PARTITIONING_SFDISK_SCHEMA="
2048,10000,L *
10248,,L
0 0;
" will create two partitions on disk, first one will be bootable.

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#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
# sanity checks
source $_LIB/die
[ -n "$IMAGE_BLOCK_DEVICE" ] || die "Image block device not set"
# execute sfdisk with the given partitioning schema
sudo sfdisk -uS --force $IMAGE_BLOCK_DEVICE <<EOF
$DIB_PARTITIONING_SFDISK_SCHEMA
EOF
sudo partprobe $IMAGE_BLOCK_DEVICE
# To ensure no race conditions exist from calling partprobe
sudo udevadm settle
# If the partition isn't under /dev/loop*p1, create it with kpartx
DM=
if [ ! -e "${IMAGE_BLOCK_DEVICE}p1" ]; then
DM=${IMAGE_BLOCK_DEVICE/#\/dev/\/dev\/mapper}
# If running inside Docker, make our nodes manually, because udev will not be working.
if [ -f /.dockerenv ]; then
# kpartx cannot run in sync mode in docker.
sudo kpartx -av $TMP_IMAGE_PATH
sudo dmsetup --noudevsync mknodes
else
sudo kpartx -asv $TMP_IMAGE_PATH
fi
elif [[ "$ARCH" =~ "ppc" ]]; then
sudo kpartx -asv $TMP_IMAGE_PATH
fi
if [ -n "$DM" ]; then
echo "IMAGE_BLOCK_DEVICE=${DM}p1"
elif [[ "$ARCH" =~ "ppc" ]]; then
DM=${IMAGE_BLOCK_DEVICE/#\/dev/\/dev\/mapper}
echo "IMAGE_BLOCK_DEVICE=${DM}p2"
else
echo "IMAGE_BLOCK_DEVICE=${IMAGE_BLOCK_DEVICE}p1"
fi

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DEFAULT_SCHEMA="2048 + L *
0 0;
0 0;
0 0;"
export DIB_PARTITIONING_SFDISK_SCHEMA=${DIB_PARTITIONING_SFDISK_SCHEMA:-$DEFAULT_SCHEMA}

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#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
if [ $DISTRO_NAME = 'opensuse' ] ; then
# workaround for https://bugzilla.novell.com/show_bug.cgi?id=859493
rm -f /dev/mapper/loop*_part1
fi