Add new role parameter NovaLibvirtMemStatsPeriodSeconds

Add role parameter NovaLibvirtMemStatsPeriodSeconds which allows to
set `libvirt/mem_stats_period_seconds` parameter value to
number of seconds to memory usage statistics period, where
zero or negative value mean to disable memory usage statistics.

Default value for the parameter is 10.
Also set the default value to 0 for Real-Time Compute roles.

Depends-On: https://review.opendev.org/#/c/663522/
Change-Id: I8e1a81bc69b4d266755ba3c2a4bf17f37d276fd7

deployment/nova/nova-compute-container-puppet.yaml

@@ -294,6 +294,14 @@ parameters:
     type: number
     tags:
       - role_specific
+  NovaLibvirtMemStatsPeriodSeconds:
+    description: >
+      A number of seconds to memory usage statistics period, zero or negative
+      value mean to disable memory usage statistics.
+    default: 10
+    type: number
+    tags:
+      - role_specific
 
 resources:
 
@@ -356,6 +364,7 @@ resources:
               nfs_options: NovaNfsOptions
               nfs_vers: NovaNfsVersion
               nova::compute::libvirt::num_pcie_ports: NovaLibvirtNumPciePorts
+              nova::compute::libvirt::mem_stats_period_seconds: NovaLibvirtMemStatsPeriodSeconds
             - values: {get_param: [RoleParameters]}
           - values:
               NovaVcpuPinSet: {get_param: NovaVcpuPinSet}
@@ -376,6 +385,7 @@ resources:
               NovaNfsOptions: {get_param: NovaNfsOptions}
               NovaNfsVersion: {get_param: NovaNfsVersion}
               NovaLibvirtNumPciePorts: {get_param: NovaLibvirtNumPciePorts}
+              NovaLibvirtMemStatsPeriodSeconds: {get_param: NovaLibvirtMemStatsPeriodSeconds}
 
 conditions:
   enable_instance_ha: {equals: [{get_param: EnableInstanceHA}, true]}

releasenotes/notes/nova_libvirt_mem_stats_period_seconds-b9b606232629cb38.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Add parameter NovaLibvirtMemStatsPeriodSeconds, which allows to
+    set `libvirt/mem_stats_period_seconds` parameter value to number
+    of seconds to memory usage statistics period, zero or negative
+    value mean to disable memory usage statistics.
+    Default value for NovaLibvirtMemStatsPeriodSeconds is 10.

roles/ComputeOvsDpdkRT.yaml

@@ -18,6 +18,7 @@
     TunedProfileName: "realtime-virtual-host"
     NovaLibvirtRxQueueSize: 1024
     NovaLibvirtTxQueueSize: 1024
+    NovaLibvirtMemStatsPeriodSeconds: 0
   update_serial: 25
   ServicesDefault:
     - OS::TripleO::Services::Aide

roles/ComputeOvsDpdkSriovRT.yaml

@@ -15,6 +15,7 @@
     TunedProfileName: "realtime-virtual-host"
     NovaLibvirtRxQueueSize: 1024
     NovaLibvirtTxQueueSize: 1024
+    NovaLibvirtMemStatsPeriodSeconds: 0
   update_serial: 25
   ServicesDefault:
     - OS::TripleO::Services::Aide

roles/ComputeRealTime.yaml

@@ -22,6 +22,7 @@
     KernelArgs: ""      # these must be set in an environment file or similar
     IsolCpusList: ""    # according to the hardware of real-time nodes
     NovaVcpuPinSet: ""  #
+    NovaLibvirtMemStatsPeriodSeconds: 0
   update_serial: 25
   ServicesDefault:
     - OS::TripleO::Services::Aide

roles/ComputeSriovRT.yaml

@@ -15,6 +15,7 @@
   ImageDefault: overcloud-realtime-compute
   RoleParametersDefault:
     TunedProfileName: "realtime-virtual-host"
+    NovaLibvirtMemStatsPeriodSeconds: 0
   update_serial: 25
   ServicesDefault:
     - OS::TripleO::Services::Aide