[ceph-client] Disable autoscaling before pools are created

When autoscaling is disabled after pools are created, there is an
opportunity for some autoscaling to take place before autoscaling
is disabled. This change checks to see if autoscaling needs to be
disabled before creating pools, then checks to see if it needs to
be enabled after creating pools. This ensures that autoscaling
won't happen when autoscaler is disabled and autoscaling won't
start prematurely as pools are being created when it is enabled.

Change-Id: I8803b799b51735ecd3a4878d62be45ec50bbbe19

ceph-client/Chart.yaml

@@ -15,6 +15,6 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Ceph Client
 name: ceph-client
-version: 0.1.11
+version: 0.1.12
 home: https://github.com/ceph/ceph-client
 ...

ceph-client/templates/bin/pool/_init.sh.tpl

@@ -146,18 +146,18 @@ function reweight_osds () {
   done
 }
 
-function enable_or_disable_autoscaling () {
-  if [[ "${ENABLE_AUTOSCALER}" == "true" ]]; then
-    if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -eq 14 ]]; then
-      ceph mgr module enable pg_autoscaler # only required for nautilus
-    fi
-    ceph config set global osd_pool_default_pg_autoscale_mode on
-  else
-    if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -eq 14 ]]; then
-      ceph mgr module disable pg_autoscaler # only required for nautilus
-    fi
-    ceph config set global osd_pool_default_pg_autoscale_mode off
+function enable_autoscaling () {
+  if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -eq 14 ]]; then
+    ceph mgr module enable pg_autoscaler # only required for nautilus
   fi
+  ceph config set global osd_pool_default_pg_autoscale_mode on
+}
+
+function disable_autoscaling () {
+  if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -eq 14 ]]; then
+    ceph mgr module disable pg_autoscaler # only required for nautilus
+  fi
+  ceph config set global osd_pool_default_pg_autoscale_mode off
 }
 
 function set_cluster_flags () {
@@ -319,6 +319,10 @@ if [[ ${quota_sum} -gt ${target_quota} ]]; then
   exit 1
 fi
 
+if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -ge 14 ]] && [[ "${ENABLE_AUTOSCALER}" != "true" ]]; then
+  disable_autoscaling
+fi
+
 {{- range $pool := .Values.conf.pool.spec -}}
 {{- with $pool }}
 # Read the pool quota from the pool spec (no quota if absent)
@@ -332,8 +336,8 @@ manage_pool {{ .application }} {{ .name }} {{ .replication }} {{ .percent_total_
 {{- end }}
 {{- end }}
 
-if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -ge 14 ]]; then
-  enable_or_disable_autoscaling
+if [[ $(ceph mgr versions | awk '/version/{print $3}' | cut -d. -f1) -ge 14 ]] && [[ "${ENABLE_AUTOSCALER}" == "true" ]]; then
+  enable_autoscaling
 fi
 
 {{- if .Values.conf.pool.crush.tunables }}

releasenotes/notes/ceph-client.yaml

@@ -12,4 +12,5 @@ ceph-client:
   - 0.1.9 Revert "[ceph-client] enhance logic to enable the autoscaler for Octopus"
   - 0.1.10 Separate pool quotas from pg_num calculations
   - 0.1.11 enhance logic to enable and disable the autoscaler
+  - 0.1.12 Disable autoscaling before pools are created
 ...