feat(xo-web/host): manage evacuation failure during host shutdown (#5966)

CHANGELOG.unreleased.md

@@ -14,6 +14,7 @@
 - [Servers] Ability to use an HTTP proxy between XO and a server
 - [Pool/advanced] Ability to define network for importing/exporting VMs/VDIs (PR [#5957](https://github.com/vatesfr/xen-orchestra/pull/5957))
 - [Menu] Notify user when proxies need to be upgraded (PR [#5930](https://github.com/vatesfr/xen-orchestra/pull/5930))
+- [Host] Handle evacuation failure during host shutdown (PR [#5966](https://github.com/vatesfr/xen-orchestra/pull/#5966))
 
 ### Bug fixes
 

packages/xo-server/src/api/host.mjs

@@ -183,14 +183,15 @@ start.resolve = {
 
 // -------------------------------------------------------------------
 
-export function stop({ host }) {
-  return this.getXapi(host).shutdownHost(host._xapiId)
+export function stop({ host, bypassEvacuate }) {
+  return this.getXapi(host).shutdownHost(host._xapiId, { bypassEvacuate })
 }
 
 stop.description = 'stop the host'
 
 stop.params = {
   id: { type: 'string' },
+  bypassEvacuate: { type: 'boolean', optional: true },
 }
 
 stop.resolve = {

packages/xo-server/src/xapi/index.mjs

@@ -297,10 +297,13 @@ export default class Xapi extends XapiBase {
     await this.call('host.syslog_reconfigure', host.$ref)
   }
 
-  async shutdownHost(hostId, force = false) {
+  async shutdownHost(hostId, { force = false, bypassEvacuate = false }) {
     const host = this.getObject(hostId)
-
+    if (bypassEvacuate) {
+      await this.call('host.disable', host.$ref)
+    } else {
       await this.clearHost(host, force)
+    }
     await this.callAsync('host.shutdown', host.$ref)
   }
 

packages/xo-web/src/common/intl/messages.js

@@ -1655,6 +1655,8 @@ const messages = {
   stopHostModalTitle: 'Shutdown host',
   stopHostModalMessage:
     "This will shutdown your host. Do you want to continue? If it's the pool master, your connection to the pool will be lost",
+  forceStopHost: 'Force shutdown host',
+  forceStopHostMessage: 'This will shutdown your host without evacuating its VMs. Do you want to continue?',
   addHostModalTitle: 'Add host',
   addHostModalMessage: 'Are you sure you want to add {host} to {pool}?',
   restartHostModalTitle: 'Restart host',

packages/xo-web/src/common/xo/index.js

@@ -807,11 +807,26 @@ export const restartHostsAgents = hosts => {
 
 export const startHost = host => _call('host.start', { id: resolveId(host) })
 
-export const stopHost = host =>
-  confirm({
-    title: _('stopHostModalTitle'),
+export const stopHost = async host => {
+  await confirm({
     body: _('stopHostModalMessage'),
-  }).then(() => _call('host.stop', { id: resolveId(host) }), noop)
+    title: _('stopHostModalTitle'),
+  })
+
+  try {
+    await _call('host.stop', { id: resolveId(host) })
+  } catch (err) {
+    if (err.message === 'no hosts available') {
+      // Retry with bypassEvacuate.
+      await confirm({
+        body: _('forceStopHostMessage'),
+        title: _('forceStopHost'),
+      })
+      return _call('host.stop', { id: resolveId(host), bypassEvacuate: true })
+    }
+    throw error
+  }
+}
 
 export const stopHosts = hosts => {
   const nHosts = size(hosts)