[CEPH] OSH: use loopback devices for ceph osds.

- This is to make use of loopback devices for ceph osds since
support for directory backed osds going to depricate.

- Move to bluestore from filestore for ceph-osds.

Change-Id: Ia95c9ceb81f7d253dd582a2e753a6ed8fe60a04d

doc/source/install/developer/cleaning-deployment.rst

@@ -54,6 +54,11 @@ containers before removing the directories used on the host by pods.
   sudo rm -rf /var/lib/nova/*
   sudo rm -rf /var/lib/libvirt/*
   sudo rm -rf /etc/libvirt/qemu/*
+  #NOTE(chinasubbareddy) cleanup LVM volume groups in case of disk backed ceph osd deployments
+  for VG in `vgs|grep -v VG|grep -i ceph|awk '{print $1}'`; do
+    echo $VG
+    vgremove -y $VG
+  done
 
   # NOTE(portdirect): Clean up mounts left behind by kubernetes pods
   sudo findmnt --raw | awk '/^\/var\/lib\/kubelet\/pods/ { print $1 }' | xargs -r -L1 -P16 sudo umount -f -l

doc/source/install/multinode.rst

@@ -104,11 +104,20 @@ Alternatively, this step can be performed by running the script directly:
 
   OSH_DEPLOY_MULTINODE=True ./tools/deployment/component/common/ingress.sh
 
+Create loopback devices for CEPH
+--------------------------------
+
+Create two loopback devices for ceph as one disk for OSD data and other disk for
+block DB and block WAL.
+
+.. code-block:: shell
+
+  ansible all -i /opt/openstack-helm-infra/tools/gate/devel/multinode-inventory.yaml -m shell -s -a "/opt/openstack-helm/tools/deployment/common/setup-ceph-loopback-device.sh"
 
 Deploy Ceph
 -----------
 
-The script below configures Ceph to use filesystem directory-based storage.
+The script below configures Ceph to use loopback devices created in previous step as backend for ceph osds.
 To configure a custom block device-based backend, please refer
 to the ``ceph-osd`` `values.yaml <https://github.com/openstack/openstack-helm/blob/master/ceph-osd/values.yaml>`_.
 

tools/deployment/common/setup-ceph-loopback-device.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -xe
+
+sudo df -lh
+sudo lsblk
+sudo mkdir -p /var/lib/openstack-helm/ceph
+sudo truncate -s 10G /var/lib/openstack-helm/ceph/ceph-osd-data-loopbackfile.img
+sudo truncate -s 8G /var/lib/openstack-helm/ceph/ceph-osd-db-wal-loopbackfile.img
+sudo losetup /dev/loop0 /var/lib/openstack-helm/ceph/ceph-osd-data-loopbackfile.img
+sudo losetup /dev/loop1 /var/lib/openstack-helm/ceph/ceph-osd-db-wal-loopbackfile.img
+#lets verify the devices
+sudo df -lh
+sudo lsblk

tools/deployment/component/ceph/ceph.sh

@@ -154,17 +154,21 @@ conf:
   storage:
     osd:
       - data:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/osd-one
-        journal:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/journal-one
-
+          type: bluestore
+          location: /dev/loop0
+        block_db:
+          location: /dev/loop1
+          size: "5GB"
+        block_wal:
+          location: /dev/loop1
+          size: "2GB"
 pod:
   replicas:
     mds: 1
     mgr: 1
     rgw: 1
+deploy:
+  tool: "ceph-volume"
 
 EOF
 

tools/deployment/developer/ceph/040-ceph.sh

@@ -14,6 +14,18 @@
 
 set -xe
 
+# Create loop back devices for ceph osds.
+sudo df -lh
+sudo lsblk
+sudo mkdir -p /var/lib/openstack-helm/ceph
+sudo truncate -s 10G /var/lib/openstack-helm/ceph/ceph-osd-data-loopbackfile.img
+sudo truncate -s 8G /var/lib/openstack-helm/ceph/ceph-osd-db-wal-loopbackfile.img
+sudo losetup /dev/loop0 /var/lib/openstack-helm/ceph/ceph-osd-data-loopbackfile.img
+sudo losetup /dev/loop1 /var/lib/openstack-helm/ceph/ceph-osd-db-wal-loopbackfile.img
+# lets check the devices
+sudo df -lh
+sudo lsblk
+
 #NOTE: Lint and package chart
 export HELM_CHART_ROOT_PATH="${HELM_CHART_ROOT_PATH:="${OSH_INFRA_PATH:="../openstack-helm-infra"}"}"
 for CHART in ceph-mon ceph-osd ceph-client ceph-provisioners; do
@@ -143,13 +155,16 @@ conf:
         replication: 1
         percent_total_data: 34.8
   storage:
-    osd:
+   osd:
       - data:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/osd-one
-        journal:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/journal-one
+          type: bluestore
+          location: /dev/loop0
+        block_db:
+          location: /dev/loop1
+          size: "5GB"
+        block_wal:
+          location: /dev/loop1
+          size: "2GB"
 
 pod:
   replicas:

tools/deployment/multinode/030-ceph.sh

@@ -56,11 +56,14 @@ conf:
   storage:
     osd:
       - data:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/osd-one
-        journal:
-          type: directory
-          location: /var/lib/openstack-helm/ceph/osd/journal-one
+          type: bluestore
+          location: /dev/loop0
+        block_db:
+          location: /dev/loop1
+          size: "5GB"
+        block_wal:
+          location: /dev/loop1
+          size: "2GB"
 storageclass:
   cephfs:
     provision_storage_class: false

zuul.d/jobs-openstack-helm.yaml

@@ -85,6 +85,7 @@
         container_distro_version: bionic
       gate_scripts:
         - ./tools/deployment/common/install-packages.sh
+        - ./tools/deployment/common/setup-ceph-loopback-device.sh
         - ./tools/deployment/common/deploy-k8s.sh
         - ./tools/deployment/common/setup-client.sh
         - ./tools/scripts/tls/cert-manager.sh
@@ -309,6 +310,7 @@
         feature_gates: apparmor
       gate_scripts:
         - ./tools/deployment/common/install-packages.sh
+        - ./tools/deployment/common/setup-ceph-loopback-device.sh
         - ./tools/deployment/common/deploy-k8s.sh
         - ./tools/deployment/common/setup-client.sh
         - ./tools/deployment/component/ceph/ceph.sh
@@ -399,6 +401,7 @@
         feature_gates: netpol
       gate_scripts:
         - ./tools/deployment/common/install-packages.sh
+        - ./tools/deployment/common/setup-ceph-loopback-device.sh
         - ./tools/deployment/common/deploy-k8s.sh
         - ./tools/deployment/common/setup-client.sh
         - ./tools/deployment/component/ceph/ceph.sh