DaanHoogland commented on code in PR #7359:
URL: https://github.com/apache/cloudstack/pull/7359#discussion_r1146249750


##########
server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java:
##########
@@ -2022,6 +1980,31 @@ private void 
validateVolumeResizeWithNewDiskOfferingAndLoad(VolumeVO volume, Dis
             newHypervisorSnapshotReserve[0] = 
volume.getHypervisorSnapshotReserve() != null ? 
newDiskOffering.getHypervisorSnapshotReserve() : null;
         }
 
+        if (existingDiskOffering.getId() == newDiskOffering.getId() &&
+                (!newDiskOffering.isCustomized() || 
(newDiskOffering.isCustomized() && Objects.equals(volume.getSize(), newSize[0] 
<< 30)))) {
+            throw new InvalidParameterValueException(String.format("Volume %s 
is already having disk offering %s", volume, newDiskOffering.getUuid()));
+        }
+
+        if (existingDiskOffering.getDiskSizeStrictness() != 
newDiskOffering.getDiskSizeStrictness()) {
+            throw new InvalidParameterValueException("Disk offering size 
strictness does not match with new disk offering.");
+        }
+
+        if 
(MatchStoragePoolTagsWithDiskOffering.valueIn(volume.getDataCenterId())) {
+            if 
(!doesNewDiskOfferingHasTagsAsOldDiskOffering(existingDiskOffering, 
newDiskOffering)) {
+                throw new 
InvalidParameterValueException(String.format("Selected disk offering %s does 
not have tags as in existing disk offering of volume %s", 
existingDiskOffering.getUuid(), volume.getUuid()));
+            }
+        }
+        Long instanceId = volume.getInstanceId();
+        VMInstanceVO vmInstanceVO = _vmInstanceDao.findById(instanceId);
+        if (volume.getVolumeType().equals(Volume.Type.ROOT)) {
+            ServiceOfferingVO serviceOffering = 
_serviceOfferingDao.findById(vmInstanceVO.getServiceOfferingId());
+            if (serviceOffering != null && 
serviceOffering.getDiskOfferingStrictness()) {
+                throw new InvalidParameterValueException(String.format("Cannot 
resize ROOT volume [%s] with new disk offering since existing disk offering is 
strictly assigned to the ROOT volume.", volume.getName()));
+            }
+        }

Review Comment:
   can these go to separate methods?



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