CLOUDSTACK-8111. NFS secondary storage repetitively mounted on CS server with ESXi hypervisors.

Fix cleanup of NFS mounts on management server during server starup by correcting how mount points are listed for a management server.

(cherry picked from commit 647532376f)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

core/src/com/cloud/storage/JavaStorageLayer.java

@@ -142,6 +142,20 @@ public class JavaStorageLayer implements StorageLayer {
         return paths;
     }
 
+    @Override
+    public List<String> listMountPointsByMsHost(String path, long msHostId) {
+        List<String> mountPaths = new ArrayList<String>();
+        File[] files = new File(path).listFiles();
+        if (files == null) {
+            return mountPaths;
+        }
+        for (File file : files) {
+            if (file.getName().startsWith(String.valueOf(msHostId) + "."))
+                mountPaths.add(file.getAbsolutePath());
+        }
+        return mountPaths;
+    }
+
     @Override
     public boolean mkdir(String path) {
         synchronized (path.intern()) {

core/src/com/cloud/storage/StorageLayer.java

@@ -21,6 +21,7 @@ package com.cloud.storage;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.List;
 
 import com.cloud.utils.component.Manager;
 
@@ -149,4 +150,6 @@ public interface StorageLayer extends Manager {
     boolean setWorldReadableAndWriteable(File file);
 
     boolean deleteDir(String dir);
+
+    List<String> listMountPointsByMsHost(String path, long msHostId);
 }

plugins/hypervisors/vmware/src/com/cloud/hypervisor/vmware/manager/VmwareManagerImpl.java

@@ -696,8 +696,8 @@ public class VmwareManagerImpl extends ManagerBase implements VmwareManager, Vmw
         long mshostId = ManagementServerNode.getManagementServerId();
 
         // cleanup left-over NFS mounts from previous session
-        String[] mounts = _storage.listFiles(parent + File.separator + String.valueOf(mshostId) + ".*");
-        if (mounts != null && mounts.length > 0) {
+        List<String> mounts = _storage.listMountPointsByMsHost(parent, mshostId);
+        if (mounts != null && !mounts.isEmpty()) {
             for (String mountPoint : mounts) {
                 s_logger.info("umount NFS mount from previous session: " + mountPoint);