xenapi: devstack support for raw tgz image upload

Devstack will recognise the .xen-raw.tgz extensions, and upload them to
glance as raw tgz images with xen pv_mode. This change also adds "tgz" to
the recognised container formats of glance. The changes for raw tgz
support are:

    https://review.openstack.org/#/c/40908/
    https://review.openstack.org/#/c/40909/
    https://review.openstack.org/#/c/41651/

related to blueprint xenapi-supported-image-import-export

Change-Id: I077564587d4303291bb4f10d62bb16380b574106

functions

@@ -1240,7 +1240,7 @@ function upload_image() {
         return
     fi
 
-    # XenServer-ovf-format images are provided as .vhd.tgz as well
+    # XenServer-vhd-ovf-format images are provided as .vhd.tgz
     # and should not be decompressed prior to loading
     if [[ "$image_url" =~ '.vhd.tgz' ]]; then
         IMAGE="$FILES/${IMAGE_FNAME}"
@@ -1249,6 +1249,22 @@ function upload_image() {
         return
     fi
 
+    # .xen-raw.tgz suggests a Xen capable raw image inside a tgz.
+    # and should not be decompressed prior to loading.
+    # Setting metadata, so PV mode is used.
+    if [[ "$image_url" =~ '.xen-raw.tgz' ]]; then
+        IMAGE="$FILES/${IMAGE_FNAME}"
+        IMAGE_NAME="${IMAGE_FNAME%.xen-raw.tgz}"
+        glance \
+          --os-auth-token $token \
+          --os-image-url http://$GLANCE_HOSTPORT \
+          image-create \
+            --name "$IMAGE_NAME" --is-public=True \
+            --container-format=tgz --disk-format=raw \
+            --property vm_mode=xen < "${IMAGE}"
+        return
+    fi
+
     KERNEL=""
     RAMDISK=""
     DISK_FORMAT=""

lib/glance

@@ -108,6 +108,10 @@ function configure_glance() {
     fi
     iniset_rpc_backend glance $GLANCE_API_CONF DEFAULT
     iniset $GLANCE_API_CONF keystone_authtoken signing_dir $GLANCE_AUTH_CACHE_DIR/api
+    if [ "$VIRT_DRIVER" = 'xenserver' ]; then
+        iniset $GLANCE_API_CONF DEFAULT container_formats "ami,ari,aki,bare,ovf,tgz"
+        iniset $GLANCE_API_CONF DEFAULT disk_formats "ami,ari,aki,vhd,raw,iso"
+    fi
 
     # Store the images in swift if enabled.
     if is_service_enabled s-proxy; then