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dahn pushed a commit to tag 4.22.0.1
in repository https://gitbox.apache.org/repos/asf/cloudstack.git

commit 4265eac832c18e9080b902a7d7ca6764e2c6d501
Author: Abhisar Sinha <[email protected]>
AuthorDate: Fri Mar 27 10:19:52 2026 +0530

    Fix Revert Instance to Snapshot with custom service offering (#12885)
    
    * Fix revertVM with custom svc offering
---
 .../cloud/vm/snapshot/VMSnapshotManagerImpl.java   | 61 +++++++++++++++-------
 .../cloud/vm/snapshot/VMSnapshotManagerTest.java   | 52 +++++++++++++++---
 2 files changed, 85 insertions(+), 28 deletions(-)

diff --git 
a/server/src/main/java/com/cloud/vm/snapshot/VMSnapshotManagerImpl.java 
b/server/src/main/java/com/cloud/vm/snapshot/VMSnapshotManagerImpl.java
index b2e820bce94..8c77eecc1aa 100644
--- a/server/src/main/java/com/cloud/vm/snapshot/VMSnapshotManagerImpl.java
+++ b/server/src/main/java/com/cloud/vm/snapshot/VMSnapshotManagerImpl.java
@@ -442,7 +442,6 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
      * Create, persist and return vm snapshot for userVmVo with given 
parameters.
      * Persistence and support for custom service offerings are done on the 
same transaction
      * @param userVmVo user vm
-     * @param vmId vm id
      * @param vsDescription vm description
      * @param vmSnapshotName vm snapshot name
      * @param vsDisplayName vm snapshot display name
@@ -751,11 +750,17 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
                     "VM Snapshot reverting failed due to vm is not in the 
state of Running or Stopped.");
         }
 
-        if (userVm.getState() == VirtualMachine.State.Running && 
vmSnapshotVo.getType() == VMSnapshot.Type.Disk || userVm.getState() == 
VirtualMachine.State.Stopped
-                && vmSnapshotVo.getType() == VMSnapshot.Type.DiskAndMemory) {
+        if (userVm.getState() == VirtualMachine.State.Running && 
vmSnapshotVo.getType() == VMSnapshot.Type.Disk) {
             throw new InvalidParameterValueException(
-                    "VM Snapshot revert not allowed. This will result in VM 
state change. You can revert running VM to disk and memory type snapshot and 
stopped VM to disk type"
-                            + " snapshot");
+                    "Reverting to the Instance Snapshot is not allowed for 
running Instances as this would result in an Instance state change. " +
+                            "For running Instances only Snapshots with memory 
can be reverted. " +
+                            "In order to revert to a Snapshot without memory 
you need to first stop the Instance.");
+        }
+
+        if (userVm.getState() == VirtualMachine.State.Stopped && 
vmSnapshotVo.getType() == VMSnapshot.Type.DiskAndMemory) {
+            throw new InvalidParameterValueException(
+                    "Reverting to the Instance Snapshot is not allowed for 
stopped Instances when the Snapshot contains memory as this would result in an 
Instance state change. " +
+                            "In order to revert to a Snapshot with memory you 
need to first start the Instance.");
         }
 
         // if snapshot is not created, error out
@@ -808,20 +813,36 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
     }
 
     /**
-     * If snapshot was taken with a different service offering than actual 
used in vm, should change it back to it.
-     * We also call <code>changeUserVmServiceOffering</code> in case the 
service offering is dynamic in order to
-     * perform resource limit validation, as the amount of CPUs or memory may 
have been changed.
-     * @param vmSnapshotVo vm snapshot
+     * Check if service offering change is needed for user vm when reverting 
to vm snapshot.
+     * Service offering change is needed when snapshot was taken with a 
different service offering than actual used in vm.
+     * Service offering change is also needed when service offering is dynamic 
and the amount of cpu, memory or cpu speed
+     * has been changed since snapshot was taken.
+     * @param userVm
+     * @param vmSnapshotVo
+     * @return true if service offering change is needed; false otherwise
      */
-    protected void updateUserVmServiceOffering(UserVm userVm, VMSnapshotVO 
vmSnapshotVo) {
+    protected boolean userVmServiceOfferingNeedsChange(UserVm userVm, 
VMSnapshotVO vmSnapshotVo) {
         if (vmSnapshotVo.getServiceOfferingId() != 
userVm.getServiceOfferingId()) {
-            changeUserVmServiceOffering(userVm, vmSnapshotVo);
-            return;
+            return true;
         }
-        ServiceOfferingVO serviceOffering = 
_serviceOfferingDao.findById(userVm.getServiceOfferingId());
-        if (serviceOffering.isDynamic()) {
-            changeUserVmServiceOffering(userVm, vmSnapshotVo);
+
+        ServiceOfferingVO currentServiceOffering = 
_serviceOfferingDao.findByIdIncludingRemoved(userVm.getId(), 
userVm.getServiceOfferingId());
+        if (currentServiceOffering.isDynamic()) {
+            Map<String, String> vmDetails = getVmMapDetails(vmSnapshotVo);
+            ServiceOfferingVO newServiceOffering = 
_serviceOfferingDao.getComputeOffering(currentServiceOffering, vmDetails);
+
+            int newCpu = newServiceOffering.getCpu();
+            int newMemory = newServiceOffering.getRamSize();
+            int newSpeed = newServiceOffering.getSpeed();
+            int currentCpu = currentServiceOffering.getCpu();
+            int currentMemory = currentServiceOffering.getRamSize();
+            int currentSpeed = currentServiceOffering.getSpeed();
+
+            if (newCpu != currentCpu || newMemory != currentMemory || newSpeed 
!= currentSpeed) {
+                return true;
+            }
         }
+        return false;
     }
 
     /**
@@ -839,7 +860,7 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
     }
 
     /**
-     * Update service offering on {@link userVm} to the one specified in 
{@link vmSnapshotVo}
+     * Update service offering on {code}userVm{code} to the one specified in 
{code}vmSnapshotVo{code}
      * @param userVm user vm to be updated
      * @param vmSnapshotVo vm snapshot
      */
@@ -853,8 +874,8 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
     }
 
     /**
-     * Upgrade virtual machine {@linkplain vmId} to new service offering 
{@linkplain serviceOfferingId}
-     * @param vmId vm id
+     * Upgrade virtual machine {code}vm{code} to new service offering 
{code}serviceOfferingId{code}
+     * @param vm vm to be upgraded
      * @param serviceOfferingId service offering id
      * @param details vm details
      * @return if operation was successful
@@ -941,7 +962,7 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
             Transaction.execute(new 
TransactionCallbackWithExceptionNoReturn<CloudRuntimeException>() {
                 @Override
                 public void doInTransactionWithoutResult(TransactionStatus 
status) throws CloudRuntimeException {
-                    updateUserVmServiceOffering(userVm, vmSnapshotVo);
+                    userVmServiceOfferingNeedsChange(userVm, vmSnapshotVo);
                     revertUserVmDetailsFromVmSnapshot(userVm, vmSnapshotVo);
                 }
             });
@@ -1292,7 +1313,7 @@ public class VMSnapshotManagerImpl extends 
MutualExclusiveIdsManagerBase impleme
     public Pair<JobInfo.Status, String> 
orchestrateCreateVMSnapshot(VmWorkCreateVMSnapshot work) throws Exception {
         VMSnapshot snapshot = orchestrateCreateVMSnapshot(work.getVmId(), 
work.getVmSnapshotId(), work.isQuiesceVm());
         return new Pair<JobInfo.Status, String>(JobInfo.Status.SUCCEEDED,
-                _jobMgr.marshallResultObject(new Long(snapshot.getId())));
+                _jobMgr.marshallResultObject(Long.valueOf(snapshot.getId())));
     }
 
     @ReflectionUse
diff --git 
a/server/src/test/java/com/cloud/vm/snapshot/VMSnapshotManagerTest.java 
b/server/src/test/java/com/cloud/vm/snapshot/VMSnapshotManagerTest.java
index 7b12fc4a99c..566d97d7b40 100644
--- a/server/src/test/java/com/cloud/vm/snapshot/VMSnapshotManagerTest.java
+++ b/server/src/test/java/com/cloud/vm/snapshot/VMSnapshotManagerTest.java
@@ -79,9 +79,12 @@ import java.util.List;
 import java.util.Map;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doNothing;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
@@ -223,6 +226,7 @@ public class VMSnapshotManagerTest {
         when(vmSnapshotVO.getId()).thenReturn(VM_SNAPSHOT_ID);
         when(serviceOffering.isDynamic()).thenReturn(false);
         
when(_serviceOfferingDao.findById(SERVICE_OFFERING_ID)).thenReturn(serviceOffering);
+        when(_serviceOfferingDao.findByIdIncludingRemoved(TEST_VM_ID, 
SERVICE_OFFERING_ID)).thenReturn(serviceOffering);
 
         for (ResourceDetail detail : Arrays.asList(userVmDetailCpuNumber, 
vmSnapshotDetailCpuNumber)) {
             when(detail.getName()).thenReturn("cpuNumber");
@@ -340,22 +344,54 @@ public class VMSnapshotManagerTest {
     }
 
     @Test
-    public void testUpdateUserVmServiceOfferingSameServiceOffering() {
-        _vmSnapshotMgr.updateUserVmServiceOffering(userVm, vmSnapshotVO);
-        verify(_vmSnapshotMgr, never()).changeUserVmServiceOffering(userVm, 
vmSnapshotVO);
+    public void 
testUserVmServiceOfferingNeedsChangeWhenSnapshotOfferingDiffers() {
+        
when(userVm.getServiceOfferingId()).thenReturn(SERVICE_OFFERING_DIFFERENT_ID);
+        
when(vmSnapshotVO.getServiceOfferingId()).thenReturn(SERVICE_OFFERING_ID);
+
+        assertTrue(_vmSnapshotMgr.userVmServiceOfferingNeedsChange(userVm, 
vmSnapshotVO));
+
+        verify(_serviceOfferingDao, 
never()).findByIdIncludingRemoved(anyLong(), anyLong());
+        verify(_serviceOfferingDao, 
never()).getComputeOffering(any(ServiceOfferingVO.class), any());
     }
 
     @Test
-    public void testUpdateUserVmServiceOfferingDifferentServiceOffering() 
throws ConcurrentOperationException, ResourceUnavailableException, 
ManagementServerException, VirtualMachineMigrationException {
-        
when(userVm.getServiceOfferingId()).thenReturn(SERVICE_OFFERING_DIFFERENT_ID);
-        
when(_userVmManager.upgradeVirtualMachine(ArgumentMatchers.eq(TEST_VM_ID), 
ArgumentMatchers.eq(SERVICE_OFFERING_ID), 
mapDetailsCaptor.capture())).thenReturn(true);
-        _vmSnapshotMgr.updateUserVmServiceOffering(userVm, vmSnapshotVO);
+    public void 
testUserVmServiceOfferingNeedsChangeWhenSameNonDynamicOffering() {
+        assertFalse(_vmSnapshotMgr.userVmServiceOfferingNeedsChange(userVm, 
vmSnapshotVO));
+
+            verify(_serviceOfferingDao).findByIdIncludingRemoved(TEST_VM_ID, 
SERVICE_OFFERING_ID);
+            verify(_serviceOfferingDao, 
never()).getComputeOffering(any(ServiceOfferingVO.class), any());
+        }
 
-        verify(_vmSnapshotMgr).changeUserVmServiceOffering(userVm, 
vmSnapshotVO);
+    @Test
+    public void 
testUserVmServiceOfferingNeedsChangeWhenDynamicOfferingMatchesSnapshot() {
+        when(serviceOffering.isDynamic()).thenReturn(true);
+        when(serviceOffering.getCpu()).thenReturn(2);
+        when(serviceOffering.getRamSize()).thenReturn(2048);
+        when(serviceOffering.getSpeed()).thenReturn(1000);
+        when(_serviceOfferingDao.getComputeOffering(eq(serviceOffering), 
any())).thenReturn(serviceOffering);
+
+        assertFalse(_vmSnapshotMgr.userVmServiceOfferingNeedsChange(userVm, 
vmSnapshotVO));
+
+        verify(_serviceOfferingDao).getComputeOffering(eq(serviceOffering), 
any());
         verify(_vmSnapshotMgr).getVmMapDetails(vmSnapshotVO);
         
verify(_vmSnapshotMgr).upgradeUserVmServiceOffering(ArgumentMatchers.eq(userVm),
 ArgumentMatchers.eq(SERVICE_OFFERING_ID), mapDetailsCaptor.capture());
     }
 
+    @Test
+    public void 
testUserVmServiceOfferingNeedsChangeWhenDynamicCpuDiffersFromSnapshot() {
+        when(serviceOffering.isDynamic()).thenReturn(true);
+        when(serviceOffering.getCpu()).thenReturn(2);
+        when(serviceOffering.getRamSize()).thenReturn(2048);
+        when(serviceOffering.getSpeed()).thenReturn(1000);
+        ServiceOfferingVO fromSnapshot = mock(ServiceOfferingVO.class);
+        when(fromSnapshot.getCpu()).thenReturn(4);
+        when(fromSnapshot.getRamSize()).thenReturn(2048);
+        when(fromSnapshot.getSpeed()).thenReturn(1000);
+        when(_serviceOfferingDao.getComputeOffering(eq(serviceOffering), 
any())).thenReturn(fromSnapshot);
+
+        assertTrue(_vmSnapshotMgr.userVmServiceOfferingNeedsChange(userVm, 
vmSnapshotVO));
+    }
+
     @Test
     public void testGetVmMapDetails() {
         Map<String, String> result = 
_vmSnapshotMgr.getVmMapDetails(vmSnapshotVO);

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