Replace Ceph Mimic by Nautilus in CentOS

Ceph Nautilus has now a stable release 14.2.0 and it's being packaged
in CentOS Storage SIG. Mimic release was not LTS so let's replace it
by Nautilus where possible.

Since nautilus, the supported store backend is LVM which can use a block
device directly (not loopback) or a LVM logical volume for OSDs.

This patch is creating a LVM structure to create the OSD used to
validate Ceph and switching scenario004 to use nautilus instead of
mimic, so we will keep testing both Luminous and Nautilus, LTS releases.

Depends-On: https://review.opendev.org/#/c/650263/
Change-Id: I81441237a8b7cf651fa6926b2eb3c4ed0d42bb58

configure_facts.sh

@@ -17,7 +17,7 @@
 export WRITE_FACTS=${WRITE_FACTS:-true}
 export DLRN_BASE=${DLRN_BASE:-centos7-master/puppet-passed-ci}
 export DLRN_DEPS_BASE=${DLRN_DEPS_BASE:-centos7-master/deps/latest/}
-export CEPH_VERSION=${CEPH_VERSION:-mimic}
+export CEPH_VERSION=${CEPH_VERSION:-nautilus}
 
 export SCRIPT_DIR=$(cd `dirname $0` && pwd -P)
 source $SCRIPT_DIR/functions

manifests/ceph.pp

@@ -34,6 +34,23 @@ class openstack_integration::ceph (
     })
   }
 
+  exec { 'lvm_create':
+    command   => "/bin/true # comment to satisfy puppet syntax requirements
+truncate --size=10G /diskimage.img
+losetup /dev/loop0 /diskimage.img
+pvcreate /dev/loop0
+vgcreate ceph_vg /dev/loop0
+lvcreate -n lv_data -a y -l 100%FREE ceph_vg
+",
+    unless    => "/bin/true # comment to satisfy puppet syntax requirements
+set -ex
+test -b /dev/ceph_vg/lv_data
+",
+    logoutput => true,
+  }
+
+  Exec['lvm_create'] -> Class['Ceph::Osds']
+
   class { '::ceph::profile::params':
     fsid                         => '7200aea0-2ddd-4a32-aa2a-d49f66ab554c',
     manage_repo                  => false, # repo already managed in openstack_integration::repo
@@ -68,7 +85,7 @@ class openstack_integration::ceph (
       },
     },
     osds                         => {
-      '/var/lib/ceph/data' => {},
+      'ceph_vg/lv_data' => {},
     },
     # Configure Ceph RadosGW
     # These could be always set in the above call to ceph::profile::params

zuul.d/integration.yaml

@@ -194,9 +194,11 @@
       ceph: mimic
 
 - job:
-    name: puppet-openstack-integration-5-scenario004-tempest-centos-7-mimic
+    name: puppet-openstack-integration-5-scenario004-tempest-centos-7-nautilus
     parent: puppet-openstack-integration-5-scenario004
     nodeset: centos-7
+    vars:
+      ceph: nautilus
 
 - job:
     name: puppet-openstack-integration-5-scenario004-tempest-debian-stable-luminous
@@ -311,9 +313,11 @@
       ceph: mimic
 
 - job:
-    name: puppet-openstack-integration-6-scenario004-tempest-centos-7-mimic
+    name: puppet-openstack-integration-6-scenario004-tempest-centos-7-nautilus
     parent: puppet-openstack-integration-6-scenario004
     nodeset: centos-7
+    vars:
+      ceph: nautilus
 
 - job:
     name: puppet-openstack-integration-6-scenario004-tempest-debian-stable-luminous

zuul.d/layout.yaml

@@ -57,7 +57,7 @@
         - puppet-openstack-integration-5-scenario001-tempest-centos-7-luminous
         - puppet-openstack-integration-5-scenario002-tempest-centos-7
         - puppet-openstack-integration-5-scenario003-tempest-centos-7
-        - puppet-openstack-integration-5-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-5-scenario004-tempest-centos-7-nautilus
         - puppet-openstack-integration-5-scenario001-tempest-ubuntu-bionic-mimic
         - puppet-openstack-integration-5-scenario002-tempest-ubuntu-bionic
         - puppet-openstack-integration-5-scenario003-tempest-ubuntu-bionic
@@ -67,7 +67,7 @@
         - puppet-openstack-integration-5-scenario001-tempest-centos-7-luminous
         - puppet-openstack-integration-5-scenario002-tempest-centos-7
         - puppet-openstack-integration-5-scenario003-tempest-centos-7
-        - puppet-openstack-integration-5-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-5-scenario004-tempest-centos-7-nautilus
     experimental:
       jobs:
         - puppet-openstack-integration-4-scenario001-tempest-debian-stable-luminous:
@@ -89,7 +89,7 @@
         - puppet-openstack-integration-6-scenario001-tempest-centos-7-luminous
         - puppet-openstack-integration-6-scenario002-tempest-centos-7
         - puppet-openstack-integration-6-scenario003-tempest-centos-7
-        - puppet-openstack-integration-6-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-6-scenario004-tempest-centos-7-nautilus
         - puppet-openstack-integration-6-scenario001-tempest-ubuntu-bionic-mimic
         - puppet-openstack-integration-6-scenario002-tempest-ubuntu-bionic
         - puppet-openstack-integration-6-scenario003-tempest-ubuntu-bionic
@@ -156,10 +156,10 @@
     check:
       jobs:
         - puppet-openstack-integration-5-scenario004-tempest-ubuntu-bionic-mimic
-        - puppet-openstack-integration-5-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-5-scenario004-tempest-centos-7-nautilus
     gate:
       jobs:
-        - puppet-openstack-integration-5-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-5-scenario004-tempest-centos-7-nautilus
     experimental:
       jobs:
         - puppet-openstack-integration-4-scenario004-tempest-debian-stable-luminous:
@@ -167,4 +167,4 @@
         - puppet-openstack-integration-5-scenario004-tempest-debian-stable-luminous
         - puppet-openstack-integration-6-scenario004-tempest-debian-stable-luminous
         - puppet-openstack-integration-6-scenario004-tempest-ubuntu-bionic-mimic
-        - puppet-openstack-integration-6-scenario004-tempest-centos-7-mimic
+        - puppet-openstack-integration-6-scenario004-tempest-centos-7-nautilus