Infer single conversion storage pool for VMware import

server/src/main/java/org/apache/cloudstack/vm/UnmanagedVMsManagerImpl.java

@@ -1679,6 +1679,7 @@ protected UserVm importUnmanagedInstanceFromVmwareToKvm(DataCenter zone, Cluster
                             ApiConstants.FORCE_MS_TO_IMPORT_VM_FILES, ApiConstants.USE_VDDK));
         }
 
+        convertStoragePoolId = resolveImplicitConversionStoragePoolId(destinationCluster, convertStoragePoolId, forceConvertToPool);
         checkConversionStoragePool(convertStoragePoolId, forceConvertToPool);
         validateSelectedConversionStoragePoolForVddk(useVddk, convertStoragePoolId, serviceOffering, dataDiskOfferingMap);
 
@@ -1816,6 +1817,45 @@ protected void checkConversionStoragePool(Long convertStoragePoolId, boolean for
         }
     }
 
+    protected Long resolveImplicitConversionStoragePoolId(Cluster destinationCluster, Long convertStoragePoolId,
+                                                          boolean forceConvertToPool) {
+        if (!forceConvertToPool || convertStoragePoolId != null) {
+            return convertStoragePoolId;
+        }
+
+        List<StoragePoolVO> candidatePools = getImplicitForceConvertToPoolStoragePools(destinationCluster);
+        if (candidatePools.isEmpty()) {
+            logFailureAndThrowException(String.format("The parameter forceconverttopool is set to true, but no suitable primary storage pool was found in cluster %s",
+                    destinationCluster.getName()));
+        }
+        if (candidatePools.size() > 1) {
+            logFailureAndThrowException(String.format("The parameter forceconverttopool is set to true, but multiple suitable primary storage pools were found in cluster %s. Please provide convertinstancepoolid.",
+                    destinationCluster.getName()));
+        }
+
+        StoragePoolVO implicitPool = candidatePools.get(0);
+        logger.debug("The parameter forceconverttopool is set to true and no conversion storage pool was provided; using the only suitable primary storage pool [{}].",
+                implicitPool.getName());
+        return implicitPool.getId();
+    }
+
+    private List<StoragePoolVO> getImplicitForceConvertToPoolStoragePools(Cluster destinationCluster) {
+        Set<StoragePoolVO> pools = new HashSet<>();
+        for (Storage.StoragePoolType poolType : forceConvertToPoolAllowedTypes) {
+            List<StoragePoolVO> clusterPools = primaryDataStoreDao.findClusterWideStoragePoolsByHypervisorAndPoolType(destinationCluster.getId(),
+                    Hypervisor.HypervisorType.KVM, poolType);
+            if (clusterPools != null) {
+                pools.addAll(clusterPools);
+            }
+            List<StoragePoolVO> zonePools = primaryDataStoreDao.findZoneWideStoragePoolsByHypervisorAndPoolType(destinationCluster.getDataCenterId(),
+                    Hypervisor.HypervisorType.KVM, poolType);
+            if (zonePools != null) {
+                pools.addAll(zonePools);
+            }
+        }
+        return new ArrayList<>(pools);
+    }
+
     protected void validateSelectedConversionStoragePoolForVddk(boolean useVddk, Long convertStoragePoolId,
                                                                 ServiceOfferingVO serviceOffering, Map<String, Long> dataDiskOfferingMap) {
         if (!useVddk || convertStoragePoolId == null) {

server/src/test/java/org/apache/cloudstack/vm/UnmanagedVMsManagerImplTest.java

@@ -1405,6 +1405,46 @@ public void testCheckConversionStoragePoolTemporarySecondaryStorageForceConvertT
         unmanagedVMsManager.checkConversionStoragePool(null, true);
     }
 
+    @Test
+    public void testResolveImplicitConversionStoragePoolIdUsesSingleSuitablePoolWhenForceConvertToPool() {
+        ClusterVO cluster = getClusterForTests();
+        StoragePoolVO storagePool = mock(StoragePoolVO.class);
+        when(storagePool.getId()).thenReturn(42L);
+        when(primaryDataStoreDao.findClusterWideStoragePoolsByHypervisorAndPoolType(cluster.getId(),
+                Hypervisor.HypervisorType.KVM, Storage.StoragePoolType.NetworkFilesystem))
+                .thenReturn(List.of(storagePool));
+
+        Long storagePoolId = unmanagedVMsManager.resolveImplicitConversionStoragePoolId(cluster, null, true);
+
+        Assert.assertEquals(Long.valueOf(42L), storagePoolId);
+    }
+
+    @Test
+    public void testResolveImplicitConversionStoragePoolIdKeepsExplicitPoolWhenForceConvertToPool() {
+        ClusterVO cluster = getClusterForTests();
+
+        Long storagePoolId = unmanagedVMsManager.resolveImplicitConversionStoragePoolId(cluster, 42L, true);
+
+        Assert.assertEquals(Long.valueOf(42L), storagePoolId);
+        Mockito.verifyNoInteractions(primaryDataStoreDao);
+    }
+
+    @Test(expected = CloudRuntimeException.class)
+    public void testResolveImplicitConversionStoragePoolIdFailsWhenMultiplePoolsFound() {
+        ClusterVO cluster = getClusterForTests();
+        when(cluster.getName()).thenReturn("cluster-1");
+        StoragePoolVO firstStoragePool = mock(StoragePoolVO.class);
+        StoragePoolVO secondStoragePool = mock(StoragePoolVO.class);
+        when(primaryDataStoreDao.findClusterWideStoragePoolsByHypervisorAndPoolType(cluster.getId(),
+                Hypervisor.HypervisorType.KVM, Storage.StoragePoolType.NetworkFilesystem))
+                .thenReturn(List.of(firstStoragePool));
+        when(primaryDataStoreDao.findZoneWideStoragePoolsByHypervisorAndPoolType(cluster.getDataCenterId(),
+                Hypervisor.HypervisorType.KVM, Storage.StoragePoolType.NetworkFilesystem))
+                .thenReturn(List.of(secondStoragePool));
+
+        unmanagedVMsManager.resolveImplicitConversionStoragePoolId(cluster, null, true);
+    }
+
     @Test
     public void testCheckConversionStoragePoolPrimaryStagingPool() {
         StoragePoolVO destPool = mock(StoragePoolVO.class);

ui/src/views/tools/ImportUnmanagedInstance.vue

@@ -1085,11 +1085,7 @@ export default {
         }
         getAPI('listStoragePools', params).then(json => {
           this.storagePoolsForConversion = json.liststoragepoolsresponse.storagepool || []
-          // Keep selected pool state aligned when the value is auto-populated by v-model.
-          if (this.form.convertstoragepoolid) {
-            const poolExists = this.storagePoolsForConversion.some(pool => pool.id === this.form.convertstoragepoolid)
-            this.selectedStoragePoolForConversion = poolExists ? this.form.convertstoragepoolid : null
-          }
+          this.syncSelectedStoragePoolForConversion()
         })
       } else if (this.selectedStorageOptionForConversion === 'local') {
         const kvmHost = this.kvmHostsForConversion.filter(x => x.id === this.selectedKvmHostForConversion)[0]
@@ -1099,13 +1095,25 @@ export default {
           status: 'Up'
         }).then(json => {
           this.storagePoolsForConversion = json.liststoragepoolsresponse.storagepool || []
-          if (this.form.convertstoragepoolid) {
-            const poolExists = this.storagePoolsForConversion.some(pool => pool.id === this.form.convertstoragepoolid)
-            this.selectedStoragePoolForConversion = poolExists ? this.form.convertstoragepoolid : null
-          }
+          this.syncSelectedStoragePoolForConversion()
         })
       }
     },
+    syncSelectedStoragePoolForConversion () {
+      if (this.form.convertstoragepoolid) {
+        const poolExists = this.storagePoolsForConversion.some(pool => pool.id === this.form.convertstoragepoolid)
+        if (poolExists) {
+          this.selectedStoragePoolForConversion = this.form.convertstoragepoolid
+          return
+        }
+        this.form.convertstoragepoolid = null
+        this.selectedStoragePoolForConversion = null
+      }
+      if (this.storagePoolsForConversion.length === 1) {
+        this.form.convertstoragepoolid = this.storagePoolsForConversion[0].id
+        this.selectedStoragePoolForConversion = this.form.convertstoragepoolid
+      }
+    },
     updateSelectedKvmHostForImporting (clusterid, checked, value) {
       if (checked) {
         this.selectedKvmHostForImporting = value
@@ -1162,6 +1170,9 @@ export default {
       this.selectedStoragePoolForConversion = null
       this.showStoragePoolsForConversion = false
       this.resetStorageOptionsForConversion()
+      if (val) {
+        this.selectPrimaryStorageForForcedConversion()
+      }
     },
     onUseVddkChange (val, isUserChange = true) {
       if (isUserChange) {
@@ -1186,6 +1197,14 @@ export default {
         this.fetchKvmHostsForConversion()
       }
       this.resetStorageOptionsForConversion()
+      if (val) {
+        this.selectPrimaryStorageForForcedConversion()
+      }
+    },
+    selectPrimaryStorageForForcedConversion () {
+      this.selectedStorageOptionForConversion = 'primary'
+      this.showStoragePoolsForConversion = true
+      this.fetchStoragePoolsForConversion()
     },
     updateSelectedRootDisk () {
       var rootDisk = this.resource.disk[this.selectedRootDiskIndex]