sig_cloud/diskimage-builder
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Update the Fedora element to honour --offline.

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Similar to the Ubuntu element the Fedora element had not been updated
to honour --offline. Also similarly we only check for the existence of
the final cached file rather than the image we directly download,
because they are generated separately.

The -u change is just hygiene to detect future buggy changes.

Change-Id: Ib92a9d419bb485c8861da041066827e8d6aac0b7
This commit is contained in:
Robert Collins 2013-07-18 10:15:02 +12:00
parent d7379df8b8
commit b8d08006db
1 changed files with 42 additions and 37 deletions
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79
elements/fedora/root.d/10-fedora-cloud-image
View File

@ -1,6 +1,6 @@
#!/bin/bash
set -e
set -eu
[ -n "$ARCH" ]
[ -n "$TARGET_ROOT" ]
@ -14,45 +14,50 @@ DIB_RELEASE=${DIB_RELEASE:-latest}
DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://cloud.fedoraproject.org}
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-fedora-$DIB_RELEASE.$ARCH.qcow2}
BASE_IMAGE_TAR=$DIB_RELEASE-Cloud-$ARCH-latest.tgz
CACHED_TAR=$IMG_PATH/$BASE_IMAGE_TAR
echo "Fetching Base Image"
$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $IMG_PATH/$BASE_IMAGE_FILE
if [ -n "$DIB_OFFLINE" -a -f "$CACHED_TAR" ] ; then
echo "Not checking freshness of cached $CACHED_TAR."
else
echo "Fetching Base Image"
$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $IMG_PATH/$BASE_IMAGE_FILE
if [ ! -f $IMG_PATH/$BASE_IMAGE_TAR -o \
$IMG_PATH/$BASE_IMAGE_FILE -nt $IMG_PATH/$BASE_IMAGE_TAR ] ; then
echo "Repacking base image as tarball."
WORKING=$(mktemp -d)
EACTION="rm -r $WORKING"
trap "$EACTION" EXIT
echo "Working in $WORKING"
RAW_FILE=$(basename $BASE_IMAGE_FILE)
RAW_FILE=${RAW_FILE#.qcow2}.raw
qemu-img convert -f qcow2 -O raw $IMG_PATH/$BASE_IMAGE_FILE $WORKING/$RAW_FILE
# WARNING: The mattdm image has the root filesystem on the second
# partition (p2). If he changes the image the MAGIC_BIT
# might also need to change.
# UPDATE to above warning alluding to Fedora18:
# F19 images have the rootfs partition on p1
MAGIC_BIT=p1
# XXX: Parsing stdout is dangerous, would like a better way to discover
# the device used for the image.
# NOTE: On F17 (parted-3.0-10.fc17.x86_64), partprobe of
# /dev/loop0 does not create /dev/loop0p2, while kpartx at
# least creates /dev/mapper/loop0p2.
LOOPDEV=$(sudo kpartx -avr $WORKING/$RAW_FILE | awk "/loop[0-9]+$MAGIC_BIT/ {print \$3}")
if ! timeout 5 sh -c "while ! [ -e /dev/mapper/$LOOPDEV ]; do sleep 1; done"; then
echo "Error: Could not find /dev/mapper/$LOOPDEV"
exit 1
if [ ! -f $CACHED_TAR -o \
$IMG_PATH/$BASE_IMAGE_FILE -nt $CACHED_TAR ] ; then
echo "Repacking base image as tarball."
WORKING=$(mktemp -d)
EACTION="rm -r $WORKING"
trap "$EACTION" EXIT
echo "Working in $WORKING"
RAW_FILE=$(basename $BASE_IMAGE_FILE)
RAW_FILE=${RAW_FILE#.qcow2}.raw
qemu-img convert -f qcow2 -O raw $IMG_PATH/$BASE_IMAGE_FILE $WORKING/$RAW_FILE
# WARNING: The mattdm image has the root filesystem on the second
# partition (p2). If he changes the image the MAGIC_BIT
# might also need to change.
# UPDATE to above warning alluding to Fedora18:
# F19 images have the rootfs partition on p1
MAGIC_BIT=p1
# XXX: Parsing stdout is dangerous, would like a better way to discover
# the device used for the image.
# NOTE: On F17 (parted-3.0-10.fc17.x86_64), partprobe of
# /dev/loop0 does not create /dev/loop0p2, while kpartx at
# least creates /dev/mapper/loop0p2.
LOOPDEV=$(sudo kpartx -avr $WORKING/$RAW_FILE | awk "/loop[0-9]+$MAGIC_BIT/ {print \$3}")
if ! timeout 5 sh -c "while ! [ -e /dev/mapper/$LOOPDEV ]; do sleep 1; done"; then
echo "Error: Could not find /dev/mapper/$LOOPDEV"
exit 1
fi
EACTION="sudo kpartx -d $WORKING/$RAW_FILE;$EACTION"
trap "$EACTION" EXIT
mkdir $WORKING/mnt
sudo mount /dev/mapper/$LOOPDEV $WORKING/mnt
EACTION="sudo umount -f $WORKING/mnt;$EACTION"
trap "$EACTION" EXIT
# Chroot in so that we get the correct uid/gid
sudo chroot $WORKING/mnt bin/tar -cz . > $WORKING/tmp.tar
mv $WORKING/tmp.tar $IMG_PATH/$BASE_IMAGE_TAR
fi
EACTION="sudo kpartx -d $WORKING/$RAW_FILE;$EACTION"
trap "$EACTION" EXIT
mkdir $WORKING/mnt
sudo mount /dev/mapper/$LOOPDEV $WORKING/mnt
EACTION="sudo umount -f $WORKING/mnt;$EACTION"
trap "$EACTION" EXIT
# Chroot in so that we get the correct uid/gid
sudo chroot $WORKING/mnt bin/tar -cz . > $WORKING/tmp.tar
mv $WORKING/tmp.tar $IMG_PATH/$BASE_IMAGE_TAR
fi
# Extract the base image
sudo tar -C $TARGET_ROOT -xzf $IMG_PATH/$BASE_IMAGE_TAR