Test ceph-multistore with a real image

This inflates the cirros image to 1G for a more realistic scenario.
Technically we should have been doing something like this all along,
as the deployment guidance for ceph is to use a raw image, not a qcow2
one, so this also increases our accuracy to real-life.

We also need to up the volume size tempest uses for various tests
to make sure we will fit.

Change-Id: I5c447e630aaf1413a5eac89c2e8103506d245221

.zuul.yaml

@@ -594,8 +594,11 @@
     required-projects:
       - openstack/nova
     pre-run:
-      - playbooks/ceph/glance-copy-policy.yaml
+      - playbooks/ceph/glance-setup.yaml
     vars:
+      # NOTE(danms): Increase our swap size since we're dealing with
+      # larger images and trigger OOMs.
+      configure_swap_size: 4096
       # NOTE(danms): These tests create an empty non-raw image, which nova
       # will refuse because we set never_download_image_if_on_rbd in this job.
       # Just skip these tests for this case.
@@ -603,6 +606,7 @@
         GLANCE_STANDALONE: True
         GLANCE_USE_IMPORT_WORKFLOW: True
         DEVSTACK_PARALLEL: True
+        GLANCE_LIMIT_IMAGE_SIZE_TOTAL: 2048
       # NOTE(danms): This job is pretty heavy as it is, so we disable some
       # services that are not relevant to the nova-glance-ceph scenario
       # that this job is intended to validate.
@@ -617,6 +621,8 @@
           $TEMPEST_CONFIG:
             image-feature-enabled:
               manage_locations: true
+            volume:
+              volume_size: 1
         post-config:
           $NOVA_CONF:
             libvirt:

playbooks/ceph/glance-copy-policy.yaml

@@ -1,15 +0,0 @@
-- hosts: controller
-  tasks:
-    - name: create local.sh
-      become: yes
-      blockinfile:
-        path: /opt/stack/devstack/local.sh
-        create: True
-        mode: 0777
-        block: |
-          # This policy is default to admin only in glance. Override
-          # here to allow everyone and every type of image (private
-          # or public) to copy. This way we will be able to test copy
-          # image via non-admin as well as on private images.
-          echo $'"copy_image": ""' >> /etc/glance/policy.yaml
-          sudo systemctl restart 'devstack@g-*'

playbooks/ceph/glance-setup.yaml

@@ -0,0 +1,39 @@
+- hosts: controller
+  tasks:
+    - name: create local.sh
+      become: yes
+      blockinfile:
+        path: /opt/stack/devstack/local.sh
+        create: True
+        mode: 0777
+        block: |
+          # Delete all existing images
+          source /opt/stack/devstack/openrc admin
+          for img in $(openstack image list -f value -c ID); do
+              openstack image show $img
+              echo Deleting $img
+              openstack image delete $img
+          done
+
+          # Inflate our cirros image to 1G raw
+          arch=$(uname -m)
+          image=$(ls /opt/stack/devstack/files/cirros*${arch}-disk.img | tail -n1)
+          rawimage="/opt/stack/devstack/files/cirros-raw.img"
+          qemu-img convert -O raw "$image" "$rawimage"
+          truncate --size $((950 << 20)) "$rawimage"
+
+          # Upload it to glance as the sole image available so tempest
+          # config will find it. Wait ten seconds after doing this
+          # before the restart below.
+          openstack image create --container-format bare --disk-format raw --public "cirros-raw" < "$rawimage"
+          sleep 10
+          openstack image list
+          openstack image show cirros-raw
+
+          # This policy is default to admin only in glance. Override
+          # here to allow everyone and every type of image (private
+          # or public) to copy. This way we will be able to test copy
+          # image via non-admin as well as on private images.
+          echo $'"copy_image": ""' >> /etc/glance/policy.yaml
+          sudo systemctl restart 'devstack@g-*'
+