server: allow migration of vm with snapshots for vmware

Fixes #9061

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

Author: shwstppr

api/src/main/java/com/cloud/hypervisor/Hypervisor.java

@@ -31,20 +31,22 @@
 import static com.cloud.hypervisor.Hypervisor.HypervisorType.Functionality.DirectDownloadTemplate;
 import static com.cloud.hypervisor.Hypervisor.HypervisorType.Functionality.RootDiskSizeOverride;
 import static com.cloud.hypervisor.Hypervisor.HypervisorType.Functionality.VmStorageMigration;
+import static com.cloud.hypervisor.Hypervisor.HypervisorType.Functionality.VmStorageMigrationWithSnapshots;
 
 public class Hypervisor {
     public static class HypervisorType {
         public enum Functionality {
             DirectDownloadTemplate,
             RootDiskSizeOverride,
-            VmStorageMigration
+            VmStorageMigration,
+            VmStorageMigrationWithSnapshots
         }
 
         private static final Map<String, HypervisorType> hypervisorTypeMap = new LinkedHashMap<>();
         public static final HypervisorType None = new HypervisorType("None"); //for storage hosts
         public static final HypervisorType XenServer = new HypervisorType("XenServer", ImageFormat.VHD, EnumSet.of(RootDiskSizeOverride, VmStorageMigration));
         public static final HypervisorType KVM = new HypervisorType("KVM", ImageFormat.QCOW2, EnumSet.of(DirectDownloadTemplate, RootDiskSizeOverride, VmStorageMigration));
-        public static final HypervisorType VMware = new HypervisorType("VMware", ImageFormat.OVA, EnumSet.of(RootDiskSizeOverride, VmStorageMigration));
+        public static final HypervisorType VMware = new HypervisorType("VMware", ImageFormat.OVA, EnumSet.of(RootDiskSizeOverride, VmStorageMigration, VmStorageMigrationWithSnapshots));
         public static final HypervisorType Hyperv = new HypervisorType("Hyperv");
         public static final HypervisorType VirtualBox = new HypervisorType("VirtualBox");
         public static final HypervisorType Parralels = new HypervisorType("Parralels");

server/src/main/java/com/cloud/vm/UserVmManagerImpl.java

@@ -7312,7 +7312,8 @@ public VirtualMachine migrateVirtualMachineWithVolume(Long vmId, Host destinatio
                             HypervisorType.getListOfHypervisorsSupportingFunctionality(Functionality.VmStorageMigration)));
         }
 
-        if (_vmSnapshotDao.findByVm(vmId).size() > 0) {
+        if (!vm.getHypervisorType().isFunctionalitySupported(Functionality.VmStorageMigrationWithSnapshots) &&
+                CollectionUtils.isNotEmpty(_vmSnapshotDao.findByVm(vmId))) {
             throw new InvalidParameterValueException("VM with VM Snapshots cannot be migrated with storage, please remove all VM snapshots");
         }