Fix of deployment VM from a copied snapshot in another zone

fix of deploy VM with a snapshot that is copied to another zone
fix of creating StorPool volume from a snapshot if the size in the
offering is bigger than the snapshot size

Author: slavkap

plugins/storage/volume/storpool/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/StorPoolDownloadTemplateCommandWrapper.java

@@ -103,9 +103,10 @@ public CopyCmdAnswer execute(final StorPoolDownloadTemplateCommand cmd, final Li
             final QemuImgFile srcFile = new QemuImgFile(srcDisk.getPath(), srcDisk.getFormat());
 
             final QemuImg qemu = new QemuImg(cmd.getWaitInMillSeconds());
-            StorPoolStorageAdaptor.resize( Long.toString(srcDisk.getVirtualSize()), dst.getPath());
 
             if (dst instanceof TemplateObjectTO) {
+                StorPoolStorageAdaptor.resize( Long.toString(srcDisk.getVirtualSize()), dst.getPath());
+
                 ((TemplateObjectTO) dst).setSize(srcDisk.getVirtualSize());
             }
 

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

@@ -4192,15 +4192,7 @@ private UserVm createVirtualMachine(DataCenter zone, ServiceOffering serviceOffe
         }
 
         DiskOfferingVO rootDiskOffering = _diskOfferingDao.findById(rootDiskOfferingId);
-        long volumesSize = 0;
-        if (volume != null) {
-            volumesSize = volume.getSize();
-        } else if (snapshot != null) {
-            VolumeVO volumeVO = _volsDao.findById(snapshot.getVolumeId());
-            volumesSize = volumeVO != null ? volumeVO.getSize() : 0;
-        } else {
-            volumesSize = configureCustomRootDiskSize(customParameters, template, hypervisorType, rootDiskOffering);
-        }
+        long volumesSize = configureCustomRootDiskSize(customParameters, template, hypervisorType, rootDiskOffering);
 
         if (rootDiskOffering.getEncrypt() && hypervisorType != HypervisorType.KVM) {
             throw new InvalidParameterValueException("Root volume encryption is not supported for hypervisor type " + hypervisorType);
@@ -6222,7 +6214,6 @@ public UserVm createVirtualMachine(DeployVMCmd cmd) throws InsufficientCapacityE
             }
             _accountMgr.checkAccess(caller, null, true, volume);
             templateId = volume.getTemplateId();
-            overrideDiskOfferingId = volume.getDiskOfferingId();
         } else if (cmd.getSnapshotId() != null) {
             snapshot = _snapshotDao.findById(cmd.getSnapshotId());
             if (snapshot == null) {
@@ -6231,7 +6222,6 @@ public UserVm createVirtualMachine(DeployVMCmd cmd) throws InsufficientCapacityE
             _accountMgr.checkAccess(caller, null, true, snapshot);
             VolumeInfo volumeOfSnapshot = getVolume(snapshot.getVolumeId(), templateId, true);
             templateId = volumeOfSnapshot.getTemplateId();
-            overrideDiskOfferingId = volumeOfSnapshot.getDiskOfferingId();
         }
 
         boolean dynamicScalingEnabled = cmd.isDynamicScalingEnabled();