Add support for modifying genesis kernel parameters for OVS-DPDK

OVS-DPDK requires that hugepages are configured and available on the
host. This change allows the kernel parameters specified in the
primary CP HostProfile to be applied to the genesis node by setting
GENESIS_HOST_PROFILE and sourcing it before running gate.sh.

Change-Id: I392a08300920327d7002a413ba40edbb81c020c2

tools/deployment/seaworthy-virt/airship_gate/lib/bootaction-runner.sh

@@ -14,6 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+GENESIS_HOST_PROFILE=${2:-}
 
 ###############################################################################
 # Helper functions
@@ -64,8 +65,8 @@ install_file(){
   local path="$1"
   local content="$2"
   local permissions="$3"
-  local dirname
-  dirname=$(dirname "$path")
+  local reboot="${4:-false}"
+  local dirname=$(dirname "$path")
 
   if [[ ! -d $dirname ]]; then
     mkdir -p "$dirname"
@@ -74,9 +75,13 @@ install_file(){
   if [[ ! -f $path ]] || [ "$(cat "$path")" != "$content" ]; then
     echo "$content" > "$path"
     chmod "$permissions" "$path"
-    export FILE_UPDATED=true
+    if [[ $reboot = reboot ]]; then
+      REBOOT=true
+      echo '*** System restart required ***' > /run/reboot-required
+    fi
+    FILE_UPDATED=true
   else
-    export FILE_UPDATED=false
+    FILE_UPDATED=false
   fi
 }
 
@@ -136,6 +141,7 @@ if [[ ! $DISABLE_SECCOMP_PROFILE ]]; then
   install_file "$path" "$content" "$permissions"
 fi
 
+
 ###############################################################################
 # bootaction: apparmor-profiles
 ###############################################################################
@@ -171,3 +177,48 @@ if [[ ! $DISABLE_APPARMOR_PROFILES ]]; then
     systemctl reload apparmor.service
   fi
 fi
+
+
+###############################################################################
+# bootaction: Additional kernel parameters and hugepages for OVS-DPDK
+###############################################################################
+
+if [[ ! -z "$GENESIS_HOST_PROFILE" ]]; then
+
+  manifests_lookup "$rendered_file" "drydock/HostProfile/v1" \
+                   "$GENESIS_HOST_PROFILE" \
+                   "['data']['platform']['kernel_params']" \
+                   "dict_keys" "true"
+  kernel_params=$RESULT
+
+  grub_args=()
+  # NOTE: reverse sort is to ensure hugepagesz is before hugepages
+  for kp in $(echo $kernel_params | tr ' ' '\n' | sort -r); do
+    manifests_lookup "$rendered_file" "drydock/HostProfile/v1" \
+                     "$GENESIS_HOST_PROFILE" \
+                     "['data']['platform']['kernel_params']['$kp']"
+    if [[ $(tr '[:lower:]' '[:upper:]' <<< "$RESULT") == "TRUE" ]]; then
+      grub_args+=("$kp")
+    else
+      grub_args+=("$kp=$RESULT")
+    fi
+  done
+
+  path="/etc/default/grub.d/50-curtin-settings.cfg"
+  content="GRUB_CMDLINE_LINUX_DEFAULT=\"${grub_args[@]}\""
+
+  install_file "$path" "$content" '644' reboot
+
+  update-grub
+fi
+
+
+###############################################################################
+# Reboot node
+###############################################################################
+
+if [[ ! $DISABLE_REBOOT ]] && ([[ $REBOOT = true ]] || [[ -f /run/reboot-required ]]); then
+  echo Rebooting node $(hostname)...
+  reboot now &
+fi
+

tools/deployment/seaworthy-virt/airship_gate/stages/genesis-setup.sh

@@ -17,10 +17,14 @@ set -e
 
 source "${GATE_UTILS}"
 
+GENESIS_HOST_PROFILE=${GENESIS_HOST_PROFILE:-}
+
 # Copies script and virtmgr private key to genesis VM
 rsync_cmd "${REPO_ROOT}/tools/deployment/seaworthy-virt/airship_gate/lib/bootaction-runner.sh" "${GENESIS_NAME}:/root/airship/"
 rsync_cmd "${RENDERED_DEPOT}/rendered.yaml" "${GENESIS_NAME}:/root/airship/"
 
 set -o pipefail
-ssh_cmd "${GENESIS_NAME}" /root/airship/bootaction-runner.sh /root/airship/rendered.yaml 2>&1 | tee -a "${LOG_FILE}"
+ssh_cmd "${GENESIS_NAME}" /root/airship/bootaction-runner.sh /root/airship/rendered.yaml "${GENESIS_HOST_PROFILE}" 2>&1 | tee -a "${LOG_FILE}"
+ssh_wait "${GENESIS_NAME}"
 set +o pipefail
+