267e96f52c
Just remove globally /lost+found after the root and install phases, so distribution elements don't need to do that by themselves. Change-Id: Ic783e613bd8794aefd3f40c9a7c308d14cd04b8d
98 lines
3.3 KiB
Bash
Executable File
98 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# Intended to be called from the root.d cloud-image script as follows:
|
|
# $TMP_HOOKS_PATH/bin/extract-image $BASE_IMAGE_FILE $BASE_IMAGE_TAR $IMAGE_LOCATION $CACHED_IMAGE
|
|
|
|
|
|
set -eu
|
|
set -o pipefail
|
|
|
|
BASE_IMAGE_FILE=$1
|
|
BASE_IMAGE_TAR=$2
|
|
IMAGE_LOCATION=$3
|
|
CACHED_IMAGE=$4
|
|
|
|
CACHED_TAR=$DIB_IMAGE_CACHE/$BASE_IMAGE_TAR
|
|
DIB_LOCAL_IMAGE=${DIB_LOCAL_IMAGE:-""}
|
|
|
|
if [ -n "$DIB_OFFLINE" -a -f "$CACHED_TAR" ] ; then
|
|
echo "Not checking freshness of cached $CACHED_TAR."
|
|
else
|
|
|
|
if [ -z "$DIB_LOCAL_IMAGE" ]; then
|
|
echo "Fetching Base Image"
|
|
|
|
# There seems to be some bad Fedora mirrors returning http 404's for the cloud image.
|
|
# If the image fails to download due to a 404 we retry once.
|
|
set +e
|
|
$TMP_HOOKS_PATH/bin/cache-url $IMAGE_LOCATION $CACHED_IMAGE
|
|
RV=$?
|
|
set -e
|
|
|
|
if [ "$RV" == "44" ] ; then
|
|
$TMP_HOOKS_PATH/bin/cache-url $IMAGE_LOCATION $CACHED_IMAGE
|
|
elif [ "$RV" != "0" ] ; then
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
if [ ! -f $CACHED_TAR -o \
|
|
$CACHED_IMAGE -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 $CACHED_IMAGE $WORKING/$RAW_FILE
|
|
|
|
# F19 images have the rootfs partition on p1
|
|
# Centos7 images on p3 (p1 boot, p2 swap)
|
|
if [[ $DISTRO_NAME = "centos7" ]]; then
|
|
ROOT_PARTITON=p3
|
|
else
|
|
ROOT_PARTITON=p1
|
|
fi
|
|
|
|
# kpartx fails if no /dev/loop* exists, "losetup -f" prints first unused
|
|
# loop device and creates it if it doesn't exist
|
|
sudo losetup -f
|
|
|
|
# XXX: Parsing stdout is dangerous, would like a better way to discover
|
|
# the device used for the image.
|
|
ROOT_LOOPDEV=$(sudo kpartx -av $WORKING/$RAW_FILE | \
|
|
awk "/loop[0-9]+$ROOT_PARTITON/ {print \$3}")
|
|
if ! timeout 5 sh -c "while ! [ -e /dev/mapper/$ROOT_LOOPDEV ]; do sleep 1; done"; then
|
|
echo "Error: Could not find /dev/mapper/$ROOT_LOOPDEV"
|
|
exit 1
|
|
fi
|
|
EACTION="sudo kpartx -d $WORKING/$RAW_FILE ; $EACTION"
|
|
trap "$EACTION" EXIT
|
|
mkdir $WORKING/mnt
|
|
sudo mount /dev/mapper/$ROOT_LOOPDEV $WORKING/mnt
|
|
EACTION="sudo umount -f $WORKING/mnt ; $EACTION"
|
|
trap "$EACTION" EXIT
|
|
|
|
# need to copy the contents of /boot into the image too, so
|
|
# mount it
|
|
if [[ $DISTRO_NAME = "centos7" ]]; then
|
|
BOOT_LOOPDEV=${ROOT_LOOPDEV/p3/p1}
|
|
sudo mount /dev/mapper/$BOOT_LOOPDEV $WORKING/mnt/boot
|
|
EACTION="sudo umount -f $WORKING/mnt/boot ; $EACTION"
|
|
trap "$EACTION" EXIT
|
|
fi
|
|
|
|
# Chroot in so that we get the correct uid/gid
|
|
sudo chroot $WORKING/mnt bin/tar -cz . > $WORKING/tmp.tar
|
|
mv $WORKING/tmp.tar $CACHED_TAR
|
|
else
|
|
echo "Using cached tar from $CACHED_TAR"
|
|
fi
|
|
|
|
fi
|
|
# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
|
|
# image tarball and host OS e.g. when building Fedora image on an openSUSE host)
|
|
echo "Extracting base root image from $CACHED_TAR"
|
|
sudo tar -C $TARGET_ROOT --numeric-owner -xzf $CACHED_TAR
|