Allow custom loopback devices in multinode scripts

story: 2010760
task: 48047
Change-Id: Ie370429a9fe48c98894ce60470e3266649c4685c

tools/deployment/multinode/030-ceph.sh

@@ -14,6 +14,9 @@
 
 set -xe
 
+: ${CEPH_OSD_DATA_DEVICE:=/dev/loop0}
+: ${CEPH_OSD_DB_WAL_DEVICE:=/dev/loop1}
+
 #NOTE: Deploy command
 [ -s /tmp/ceph-fs-uuid.txt ] || uuidgen > /tmp/ceph-fs-uuid.txt
 CEPH_PUBLIC_NETWORK="$(./tools/deployment/multinode/kube-node-subnet.sh)"
@@ -60,12 +63,12 @@ conf:
     osd:
       - data:
           type: bluestore
-          location: /dev/loop0
+          location: ${CEPH_OSD_DATA_DEVICE}
         block_db:
-          location: /dev/loop1
+          location: ${CEPH_OSD_DB_WAL_DEVICE}
           size: "5GB"
         block_wal:
-          location: /dev/loop1
+          location: ${CEPH_OSD_DB_WAL_DEVICE}
           size: "2GB"
 storageclass:
   cephfs:

tools/gate/playbooks/multinode-deploy-cinder.yaml

@@ -29,12 +29,15 @@
       args:
         chdir: "{{ zuul_osh_relative_path | default(zuul.project.src_dir) }}"
 - hosts: all
+  vars_files:
+    - vars.yaml
   tasks:
     - name: Create loopback devices for CEPH on all nodes
+      environment: "{{ multinode_env }}"
       shell: |
         set -xe;
         pwd;
-        ./tools/deployment/common/setup-ceph-loopback-device.sh --ceph-osd-data /dev/loop0 --ceph-osd-dbwal /dev/loop1
+        ./tools/deployment/common/setup-ceph-loopback-device.sh --ceph-osd-data ${CEPH_OSD_DATA_DEVICE} --ceph-osd-dbwal ${CEPH_OSD_DB_WAL_DEVICE}
       args:
         chdir: "{{ zuul_osh_relative_path | default(zuul.project.src_dir) }}"
 - hosts: primary

tools/gate/playbooks/vars.yaml

@@ -19,3 +19,5 @@ multinode_env:
   OSH_EXTRA_HELM_ARGS: "{{ zuul_osh_extra_helm_args_relative_path | default('') }}"
   OSH_INFRA_PATH: "{{ zuul_osh_infra_relative_path | default('') }}"
   zuul_site_mirror_fqdn: "{{ zuul_site_mirror_fqdn }}"
+  CEPH_OSD_DATA_DEVICE: "{{ ceph_osd_data_device | default('/dev/loop0') }}"
+  CEPH_OSD_DB_WAL_DEVICE: "{{ ceph_osd_db_wal_device | default('/dev/loop1') }}"