fix(host-deployer): detach nbd device do not block main thread (#18578)

pkg/hostman/diskutils/nbd/nbdman.go

@@ -49,13 +49,13 @@ func NewNBDManager() (*SNBDManager, error) {
 	ret.nbdDevs = make(map[string]bool, 0)
 	ret.nbdLock = new(sync.Mutex)
 
-	ret.cleanupNbdDevices()
 	if err := ret.reloadNbdDevices(); err != nil {
 		return ret, errors.Wrap(err, "reloadNbdDevices")
 	}
 	if err := ret.findNbdDevices(); err != nil {
 		return ret, errors.Wrap(err, "findNbdDevices")
 	}
+	go ret.cleanupNbdDevices()
 	return ret, nil
 }
 
@@ -120,6 +120,8 @@ func (m *SNBDManager) cleanupNbdDevices() {
 				err := tryDetachNbd(nbddev)
 				if err != nil {
 					log.Errorf("tryDetachNbd fail %s", err)
+				} else {
+					m.ReleaseNbddev(nbddev)
 				}
 			}
 			i++

pkg/hostman/hostdeployer/deployserver/deployserver.go

@@ -440,6 +440,20 @@ func (s *SDeployService) checkLvmRemote() error {
 }
 
 func (s *SDeployService) InitService() {
+	s.SignalTrap(func() {
+		for {
+			if len(connectedEsxiDisks) > 0 {
+				log.Warningf("Waiting for esxi disks %d disconnect !!!", len(connectedEsxiDisks))
+				time.Sleep(time.Second * 1)
+			} else {
+				if s.grpcServer != nil {
+					s.grpcServer.Stop()
+				} else {
+					os.Exit(0)
+				}
+			}
+		}
+	})
 	log.Infof("exec socket path: %s", DeployOption.ExecutorSocketPath)
 	if DeployOption.EnableRemoteExecutor {
 		execlient.Init(DeployOption.ExecutorSocketPath)
@@ -462,20 +476,6 @@ func (s *SDeployService) InitService() {
 	if len(DeployOption.DeployServerSocketPath) == 0 {
 		log.Fatalf("missing deploy server socket path")
 	}
-	s.SignalTrap(func() {
-		for {
-			if len(connectedEsxiDisks) > 0 {
-				log.Warningf("Waiting for esxi disks %d disconnect !!!", len(connectedEsxiDisks))
-				time.Sleep(time.Second * 1)
-			} else {
-				if s.grpcServer != nil {
-					s.grpcServer.Stop()
-				} else {
-					os.Exit(0)
-				}
-			}
-		}
-	})
 }
 
 func (s *SDeployService) OnExitService() {}