Introduce support for kvm acceleration

This change introduces kvm acceleration support. The default settings
still use qemu as the domain type and kvm needs to be explicitly set
in order to enable it.

Change-Id: I59af1b7a844b927cac45722f7ea7ea4abeef7c8f
Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>

playbooks/roles/bifrost-create-vm-nodes/README.md

@@ -24,6 +24,10 @@ test_vm_memory_size: Tunable setting to allow a user to define a specific
                      between test runs, you may need to undefine the test
                      virtual machine(s) that were previously created.
 
+test_vm_domain_type: Tunable setting to allow a user to chosee the domain
+                     type of the created VMs. The default is "qemu" and can
+                     be set to kvm to enable kvm acceleration.
+
 test_vm_num_nodes: Tunable setting to allow a user to define the number of
                    test VMs that will be created. They will all be created
                    with same settings.

playbooks/roles/bifrost-create-vm-nodes/defaults/main.yml

@@ -3,3 +3,4 @@
 baremetal_csv_file: "/tmp/baremetal.csv"
 test_vm_memory_size: "3072"
 test_vm_num_nodes: "1"
+test_vm_domain_type: "qemu"

playbooks/roles/bifrost-create-vm-nodes/files/create_vm_nodes-for-role.sh

@@ -17,6 +17,9 @@
 #    # Create 3 nodes with base name of 'junk'
 #    sudo NODEBASE=junk NODECOUNT=3 create_nodes.sh
 #
+#   # Create 2 nodes that use KVM acceleration
+#    sudo VM_DOMAIN_TYPE=kvm NODECOUNT=2 create_nodes.sh
+#
 # THANKS
 #    Thanks to the author(s) of the ironic-supporting code within devstack,
 #    from which all of this is derived.
@@ -34,6 +37,7 @@ LIBVIRT_CONNECT_URI=${LIBVIRT_CONNECT_URI:-"qemu:///system"}
 export VIRSH_DEFAULT_CONNECT_URI="$LIBVIRT_CONNECT_URI"
 
 # VM specs
+VM_DOMAIN_TYPE=${VM_DOMAIN_TYPE:-qemu}
 VM_EMULATOR=${VM_EMULATOR:-/usr/bin/qemu-system-x86_64}
 VM_CPU=${VM_CPU:-1}
 VM_RAM=${VM_RAM:-3072}
@@ -67,6 +71,7 @@ VM_LOGDIR=/var/log/libvirt/baremetal_logs
 #   $6: Network bridge for the VMs
 #   $7: Path to VM emulator
 #   $8: Logging directory for the VMs
+#   $9: Domain type of the VM
 #############################################################################
 function create_node {
     NAME=$1
@@ -85,6 +90,7 @@ function create_node {
     BRIDGE=$6
     EMULATOR=$7
     LOGDIR=$8
+    DOMAIN_TYPE=$9
 
     LIBVIRT_NIC_DRIVER=${LIBVIRT_NIC_DRIVER:-"e1000"}
     LIBVIRT_STORAGE_POOL=${LIBVIRT_STORAGE_POOL:-"default"}
@@ -135,7 +141,7 @@ function create_node {
         chattr +C "$volume_path" || true
       fi
       vm_xml="
-<domain type='qemu'>
+<domain type='${DOMAIN_TYPE}'>
   <name>${NAME}</name>
   <memory unit='KiB'>${MEM}</memory>
   <vcpu>${CPU}</vcpu>
@@ -238,7 +244,7 @@ fi
 for (( i=1; i<=${NODECOUNT}; i++ ))
 do
     name=${NODEBASE}${i}
-    mac=$(create_node $name $VM_CPU $VM_RAM $VM_DISK amd64 $VM_NET_BRIDGE $VM_EMULATOR $VM_LOGDIR)
+    mac=$(create_node $name $VM_CPU $VM_RAM $VM_DISK amd64 $VM_NET_BRIDGE $VM_EMULATOR $VM_LOGDIR $VM_DOMAIN_TYPE)
 
     printf "$mac,root,undefined,192.168.122.1,$VM_CPU,$VM_RAM,$VM_DISK,flavor,type,a8cb6624-0d9f-c882-affc-046ebb96ec0${i},$name,192.168.122.$((i+1))\n" >>$TEMPFILE
 done

playbooks/roles/bifrost-create-vm-nodes/tasks/main.yml

@@ -56,6 +56,7 @@
   environment:
     NODEOUTPUT: "{{baremetal_csv_file}}"
     VM_RAM: "{{ test_vm_memory_size }}"
+    VM_DOMAIN_TYPE: "{{ test_vm_domain_type }}"
     NODECOUNT: "{{ test_vm_num_nodes }}"
   register: task_create_vm_nodes
   ignore_errors: yes

releasenotes/notes/kvm-acceleration-support-8be50d32bc34c4b3.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - Add support for kvm acceleration for the VMs created
+    by bifrost-create-vm-nodes. The default domain type
+    for the created VMs is qemu which uses tcg acceleration.
+    In order to use kvm acceleration, users need to set
+    VM_DOMAIN_TYPE to kvm.

scripts/test-bifrost.sh

@@ -23,6 +23,7 @@ BUILD_IMAGE="false"
 # use cirros.
 
 VM_MEMORY_SIZE="3072"
+VM_DOMAIN_TYPE=qemu
 TEST_VM_NUM_NODES=1
 USE_CIRROS=true
 TESTING_USER=cirros
@@ -106,6 +107,7 @@ ${ANSIBLE} -vvvv \
        test-bifrost-create-vm.yaml \
        -e test_vm_num_nodes=${TEST_VM_NUM_NODES} \
        -e test_vm_memory_size=${VM_MEMORY_SIZE} \
+       -e test_vm_domain_type=${VM_DOMAIN_TYPE} \
        -e enable_venv=${ENABLE_VENV}
 
 if [ ${USE_DHCP} = "true" ]; then