Fix openSUSE cloud image download and extraction
Use the latest available version of the rootfs (instead of a qcow2 image) to simplify rootfs extraction. Change-Id: Ic3a646b923738464b5217d799758b6980b2deaf2
This commit is contained in:
Thomas Bechtold
parent
7214ca1196
commit
1757ef20ea
@ -3,20 +3,6 @@
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set -eu
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set -o pipefail
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function find_free_nbd_device () {
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# Return first free nbd device
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return_device=''
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for chk_device in /sys/class/block/nbd*; do
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# find free nbd device by checking size field
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size_chk=`cat $chk_device/size`
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if [ "$size_chk" = "0" ]; then
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# device looks free. lets use it.
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return_device=$chk_device
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break
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fi
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done
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echo $return_device
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}
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[ -n "$ARCH" ]
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[ -n "$TARGET_ROOT" ]
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@ -24,81 +10,35 @@ if [ 'amd64' = "$ARCH" ] ; then
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ARCH="x86_64"
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fi
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if [ 'i386' = "$ARCH" ] ; then
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ARCH="i586"
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if ! [ 'x86_64' = "$ARCH" ] ; then
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echo "Only x86_64 images are currently available but ARCH is set to $ARCH."
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exit 1
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fi
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DIB_CLOUD_IMAGES=${DIB_CLOUD_IMAGES:-http://download.opensuse.org/repositories/Cloud:/Images/images/}
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DIB_RELEASE=${DIB_RELEASE:-13.1}
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# FIXME: Hard coded build numbers, versions, etc.
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# NOTE: Actual file name seems unstable, and has changed several times.
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BASE_IMAGE_NAME=${BASE_IMAGE_NAME:-openSUSE-$DIB_RELEASE-OS-guest.$ARCH-0.0.2-Build3.1}
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-openSUSE-${DIB_RELEASE}-OS-rootfs.${ARCH}.tbz}
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SHA256SUMS_FILE=${SHA256SUMS_FILE:-${BASE_IMAGE_FILE}.sha256}
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if [ -z "$DIB_OFFLINE" ] ; then
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# XXX: Try to extract the filename of the current built from the index
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# page. As there is one built available in the repo at a given time, this
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# should work. This is a tempoary workaround until the fix for
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# https://bugzilla.novell.com/show_bug.cgi?id=853882 is deployed
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echo "Looking up current built of Base Image ($BASE_IMAGE_NAME):"
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$(curl $DIB_CLOUD_IMAGES | \
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sed -n "s/^.*\<a\ href\=\"\($BASE_IMAGE_NAME.*\.tar\.bz2\)\".*$/\1/p")}
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if [ -n "$BASE_IMAGE_FILE" ]; then
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echo "Using base image: $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE"
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else
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echo -e "Failed to extract image file name from $DIB_CLOUD_IMAGES" \
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"\nPlease set BASE_IMAGE_FILE manually and retry."
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exit 1
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fi
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else
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$BASE_IMAGE_NAME-raw.tar.bz2}
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fi
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CACHED_FILE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
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CACHED_SHA256SUMS_FILE=$DIB_IMAGE_CACHE/SHA256SUMS.$BASE_IMAGE_FILE
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# FIXME: either check the checksums into git or verify the signature
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# on the checksums. We should not be trusting checksums we download
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# over HTTP
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SHA256SUMS=${SHA256SUMS:-$DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE.sha256}
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CACHED_FILE=$DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
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if [ -n "$DIB_OFFLINE" -a -f "$CACHED_FILE" ] ; then
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echo "Not checking freshness of cached $CACHED_FILE."
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else
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echo "Fetching Base Image"
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$TMP_HOOKS_PATH/bin/cache-url $SHA256SUMS $DIB_IMAGE_CACHE/SHA256SUMS.openSUSE.$DIB_RELEASE.$ARCH
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$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$SHA256SUMS_FILE $CACHED_SHA256SUMS_FILE
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$TMP_HOOKS_PATH/bin/cache-url $DIB_CLOUD_IMAGES/$BASE_IMAGE_FILE $CACHED_FILE
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pushd $DIB_IMAGE_CACHE
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grep "$BASE_IMAGE_FILE" SHA256SUMS.openSUSE.$DIB_RELEASE.$ARCH | sha256sum --check -
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# Calculate sha256sum of downloaded image and check against content from sha256 file
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SHA256SUM=$(sha256sum ${BASE_IMAGE_FILE} | cut -d " " -f1)
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grep -q $SHA256SUM SHA256SUMS.$BASE_IMAGE_FILE
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popd
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fi
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# Extract the qcow2 image and qcow2.sha256 files.
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# to make life easier create a temp directory to unzip the files.
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# TODO(NobodyCam): validate qcow2 with sha256 file
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UNTAR_TO_LOCATION=$TMP_MOUNT_PATH/openSUSE/Untar
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mkdir -p $UNTAR_TO_LOCATION
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sudo tar -C $UNTAR_TO_LOCATION -xjf $DIB_IMAGE_CACHE/$BASE_IMAGE_FILE
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# mount qcow
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nbd_device=$(find_free_nbd_device)
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mount_device=/dev/`basename $nbd_device`
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sudo qemu-nbd -c $mount_device $UNTAR_TO_LOCATION/$BASE_IMAGE_NAME.qcow2
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# Ensure that $mount_device is a block device.
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if [ -b $mount_device ]; then
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org_dir=`pwd`
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# make a mount point for the image
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mkdir $UNTAR_TO_LOCATION/mnt
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# mount the images root partition
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sudo mount ${mount_device}p1 $UNTAR_TO_LOCATION/mnt
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# copy contents to the build area
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cd $UNTAR_TO_LOCATION/mnt
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sudo find . -print | sudo cpio -padmu $TARGET_ROOT
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# ensure we are not in the directory about to be unmounted
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cd $org_dir
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echo "Copied $UNTAR_TO_LOCATION/mnt to $TARGET_ROOT"
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# unmount and remove the device used for the copy
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sudo umount $UNTAR_TO_LOCATION/mnt
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sudo qemu-nbd -d $mount_device
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else
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echo "Unable to extract openSUSE Image."
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exit 1
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fi
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# remove the temp directory
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sudo rm -rf $UNTAR_TO_LOCATION
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# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
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# image tarball and host OS)
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sudo tar -C $TARGET_ROOT --numeric-owner -xjf $CACHED_FILE
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