emergencyHostShutdown(hostId) : suspends all the VMs running on the host and then shuts the host down

src/api/host.coffee

@@ -256,6 +256,23 @@ exports.installAllPatches = installAllPatches
 
 #---------------------------------------------------------------------
 
+emergencyShutdownHost = ({host}) ->
+  return @getXAPI(host).emergencyShutdownHost(host._xapiId)
+
+emergencyShutdownHost.description = 'suspend all VMs and shutdown host'
+
+emergencyShutdownHost.params = {
+  host: { type: 'string' }
+}
+
+emergencyShutdownHost.resolve = {
+  host: ['host', 'host', 'administrate']
+}
+
+exports.emergencyShutdownHost = emergencyShutdownHost
+
+#---------------------------------------------------------------------
+
 stats = ({host, granularity}) ->
   return @getXapiHostStats(host, granularity)
 

src/api/vm.coffee

@@ -501,7 +501,7 @@ rollingSnapshot.resolve = {
   vm: ['id', 'VM', 'administrate']
 }
 
-rollingSnapshot.description = 'Snaphots a VM with a tagged name, and removes the oldest snapshot with the same tag according to depth'
+rollingSnapshot.description = 'Snapshots a VM with a tagged name, and removes the oldest snapshot with the same tag according to depth'
 
 exports.rollingSnapshot = rollingSnapshot
 

src/xapi.js

@@ -23,7 +23,8 @@ import {
   mapToArray,
   noop,
   parseXml,
-  pFinally
+  pFinally,
+  pSettle
 } from './utils'
 import {JsonRpcError} from './api-errors'
 
@@ -560,6 +561,21 @@ export default class Xapi extends XapiBase {
     }
   }
 
+  async emergencyShutdownHost (hostId) {
+    const host = this.getObject(hostId)
+    const vms = host.$resident_VMs
+    debug(`Emergency shutdown: ${host.name_label}`)
+    await pSettle(
+      mapToArray(vms, vm => {
+        if (!vm.is_control_domain) {
+          return this.call('VM.suspend', vm.$ref)
+        }
+      })
+    )
+    await this.call('host.disable', host.$ref)
+    await this.call('host.shutdown', host.$ref)
+  }
+
   // =================================================================
 
   // Disable the host and evacuate all its VMs.