Show parent snapshot (along with the chain size) for incremental snapshots

api/src/main/java/org/apache/cloudstack/api/command/user/config/ListCapabilitiesCmd.java

@@ -51,6 +51,7 @@ public void execute() {
         response.setDiskOffMaxSize((Long)capabilities.get("customDiskOffMaxSize"));
         response.setRegionSecondaryEnabled((Boolean)capabilities.get("regionSecondaryEnabled"));
         response.setKVMSnapshotEnabled((Boolean)capabilities.get("KVMSnapshotEnabled"));
+        response.setSnapshotShowChainSize((Boolean)capabilities.get("SnapshotShowChainSize"));
         response.setAllowUserViewDestroyedVM((Boolean)capabilities.get("allowUserViewDestroyedVM"));
         response.setAllowUserExpungeRecoverVM((Boolean)capabilities.get("allowUserExpungeRecoverVM"));
         response.setAllowUserExpungeRecoverVolume((Boolean)capabilities.get("allowUserExpungeRecoverVolume"));

api/src/main/java/org/apache/cloudstack/api/response/CapabilitiesResponse.java

@@ -73,6 +73,10 @@ public class CapabilitiesResponse extends BaseResponse {
     @Param(description = "True if Snapshot is supported for KVM host, false otherwise")
     private boolean kvmSnapshotEnabled;
 
+    @SerializedName("snapshotshowchainsize")
+    @Param(description = "True to show the parent and chain size (sum of physical size of snapshot and all its parents) for incremental snapshots", since = "4.22.1")
+    private boolean snapshotShowChainSize;
+
     @SerializedName("apilimitmax")
     @Param(description = "Max allowed number of api requests within the specified interval")
     private Integer apiLimitMax;
@@ -197,6 +201,10 @@ public void setKVMSnapshotEnabled(boolean kvmSnapshotEnabled) {
         this.kvmSnapshotEnabled = kvmSnapshotEnabled;
     }
 
+    public void setSnapshotShowChainSize(boolean snapshotShowChainSize) {
+        this.snapshotShowChainSize = snapshotShowChainSize;
+    }
+
     public void setApiLimitInterval(Integer apiLimitInterval) {
         this.apiLimitInterval = apiLimitInterval;
     }

api/src/main/java/org/apache/cloudstack/api/response/SnapshotResponse.java

@@ -155,6 +155,14 @@ public class SnapshotResponse extends BaseResponseWithTagInformation implements
     @Param(description = "download progress of a snapshot", since = "4.19.0")
     private Map<String, String> downloadDetails;
 
+    @SerializedName("parent")
+    @Param(description = "The parent ID of the Snapshot", since = "4.22.1")
+    private String parent;
+
+    @SerializedName("parentname")
+    @Param(description = "The parent name of the Snapshot", since = "4.22.1")
+    private String parentName;
+
     public SnapshotResponse() {
         tags = new LinkedHashSet<ResourceTagResponse>();
     }
@@ -313,4 +321,12 @@ public void setDatastoreType(String datastoreType) {
     public void setDownloadDetails(Map<String, String> downloadDetails) {
         this.downloadDetails = downloadDetails;
     }
+
+    public void setParent(String parent) {
+        this.parent = parent;
+    }
+
+    public void setParentName(String parentName) {
+        this.parentName = parentName;
+    }
 }

server/src/main/java/com/cloud/api/query/dao/SnapshotJoinDaoImpl.java

@@ -109,6 +109,8 @@ private void setSnapshotInfoDetailsInResponse(SnapshotJoinVO snapshot, SnapshotR
             if (showChainSize && snapshotInfo.getParent() != null) {
                 long chainSize = calculateChainSize(snapshotInfo);
                 snapshotResponse.setChainSize(chainSize);
+                snapshotResponse.setParent(snapshotInfo.getParent().getUuid());
+                snapshotResponse.setParentName(snapshotInfo.getParent().getName());
             }
         }
     }

server/src/main/java/com/cloud/server/ManagementServerImpl.java

@@ -4799,6 +4799,7 @@ public Map<String, Object> listCapabilities(final ListCapabilitiesCmd cmd) {
         final long diskOffMinSize = VolumeOrchestrationService.CustomDiskOfferingMinSize.value();
         final long diskOffMaxSize = VolumeOrchestrationService.CustomDiskOfferingMaxSize.value();
         final boolean KVMSnapshotEnabled = SnapshotManager.KVMSnapshotEnabled.value();
+        final boolean SnapshotShowChainSize = SnapshotManager.snapshotShowChainSize.value();
 
         final boolean userPublicTemplateEnabled = TemplateManager.AllowPublicUserTemplates.valueIn(caller.getId());
 
@@ -4839,6 +4840,7 @@ public Map<String, Object> listCapabilities(final ListCapabilitiesCmd cmd) {
         capabilities.put("customDiskOffMaxSize", diskOffMaxSize);
         capabilities.put("regionSecondaryEnabled", regionSecondaryEnabled);
         capabilities.put("KVMSnapshotEnabled", KVMSnapshotEnabled);
+        capabilities.put("SnapshotShowChainSize", SnapshotShowChainSize);
         capabilities.put("allowUserViewDestroyedVM", allowUserViewDestroyedVM);
         capabilities.put("allowUserExpungeRecoverVM", allowUserExpungeRecoverVM);
         capabilities.put("allowUserExpungeRecoverVolume", allowUserExpungeRecoverVolume);

ui/src/config/section/storage.js

@@ -312,6 +312,9 @@ export default {
       resourceType: 'Snapshot',
       columns: () => {
         var fields = ['name', 'state', 'volumename', 'intervaltype', 'physicalsize', 'created']
+        if (store.getters.features.snapshotshowchainsize) {
+          fields.splice(fields.indexOf('created'), 0, 'chainsize', 'parentname')
+        }
         if (['Admin', 'DomainAdmin'].includes(store.getters.userInfo.roletype)) {
           fields.push('account')
           if (store.getters.listAllProjects) {
@@ -324,7 +327,13 @@ export default {
         fields.push('zonename')
         return fields
       },
-      details: ['name', 'id', 'volumename', 'volumetype', 'snapshottype', 'intervaltype', 'physicalsize', 'virtualsize', 'chainsize', 'account', 'domain', 'created'],
+      details: () => {
+        var fields = ['name', 'id', 'volumename', 'volumetype', 'snapshottype', 'intervaltype', 'physicalsize', 'virtualsize', 'account', 'domain', 'created']
+        if (store.getters.features.snapshotshowchainsize) {
+          fields.splice(fields.indexOf('account'), 0, 'chainsize', 'parentname')
+        }
+        return fields
+      },
       tabs: [
         {
           name: 'details',