diff --git a/header/src/main/java/org/zstack/header/volume/CreateQcow2VolumeProvisioningStrategyExtensionPoint.java b/header/src/main/java/org/zstack/header/volume/CreateQcow2VolumeProvisioningStrategyExtensionPoint.java
deleted file mode 100644
index a93f47ef87..0000000000
--- a/header/src/main/java/org/zstack/header/volume/CreateQcow2VolumeProvisioningStrategyExtensionPoint.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package org.zstack.header.volume;
-
-public interface CreateQcow2VolumeProvisioningStrategyExtensionPoint {
-    void saveQcow2VolumeProvisioningStrategy(VolumeInventory volume, boolean hasBackingFile);
-}
diff --git a/header/src/main/java/org/zstack/header/volume/VolumeConstant.java b/header/src/main/java/org/zstack/header/volume/VolumeConstant.java
index 15d3062975..848153ef96 100755
--- a/header/src/main/java/org/zstack/header/volume/VolumeConstant.java
+++ b/header/src/main/java/org/zstack/header/volume/VolumeConstant.java
@@ -12,6 +12,10 @@ public interface VolumeConstant {
     int DEFAULT_MAX_DATA_VOLUME_NUMBER = 24;
     String BLOCK_VOLUME_TYPE = "blockVolume";
 
+    String NONE_PREALLOCTION = "none";
+    String FULL_PREALLOCTION = "full";
+    String FALLOC_PREALLOCTION = "falloc";
+
     enum Capability {
         MigrationInCurrentPrimaryStorage,
         MigrationToOtherPrimaryStorage
diff --git a/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStorageFactory.java b/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStorageFactory.java
index d755bc71aa..ef94616cc3 100755
--- a/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStorageFactory.java
+++ b/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStorageFactory.java
@@ -47,6 +47,8 @@
 import org.zstack.header.vm.VmInstanceConstant.VmOperation;
 import org.zstack.header.volume.*;
 import org.zstack.kvm.KVMConstant;
+import org.zstack.resourceconfig.ResourceConfig;
+import org.zstack.resourceconfig.ResourceConfigFacade;
 import org.zstack.storage.primary.PrimaryStorageCapacityChecker;
 import org.zstack.storage.snapshot.PostMarkRootVolumeAsSnapshotExtension;
 import org.zstack.storage.snapshot.reference.VolumeSnapshotReferenceUtils;
@@ -60,6 +62,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import static org.zstack.compute.vm.VmCpuVendor.AuthenticAMD;
 import static org.zstack.core.Platform.argerr;
 import static org.zstack.core.Platform.err;
 import static org.zstack.core.Platform.operr;
@@ -101,6 +104,8 @@ public boolean isSupportVmLiveMigration() {
     private CloudBus bus;
     @Autowired
     private ErrorFacade errf;
+    @Autowired
+    private ResourceConfigFacade rcf;
 
     private Map<String, LocalStorageBackupStorageMediator> backupStorageMediatorMap = new HashMap<String, LocalStorageBackupStorageMediator>();
 
@@ -261,11 +266,21 @@ public void afterInstantiateVolume(InstantiateVolumeOnPrimaryStorageMsg msg) {
                 hasBackingFile = true;
             }
         }
-        
-        VolumeInventory volume = msg.getVolume();
-        volume.setPrimaryStorageUuid(msg.getPrimaryStorageUuid());
-        for (CreateQcow2VolumeProvisioningStrategyExtensionPoint exp : pluginRgty.getExtensionList(CreateQcow2VolumeProvisioningStrategyExtensionPoint.class)) {
-            exp.saveQcow2VolumeProvisioningStrategy(volume, hasBackingFile);
+
+        String preallocation = rcf.getResourceConfigValueByResourceType(LocalStoragePrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                msg.getVolume().getUuid(), VolumeVO.class.getSimpleName(), String.class);
+        if (preallocation != null) {
+            return;
+        }
+
+        if (hasBackingFile) {
+            ResourceConfig rc = rcf.getResourceConfig(LocalStoragePrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getIdentity());
+            String psPreallocation = rcf.getResourceConfigValueByResourceType(LocalStoragePrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                    msg.getVolume().getPrimaryStorageUuid(), PrimaryStorageVO.class.getSimpleName(), String.class);
+            if (psPreallocation == null) {
+                psPreallocation = LocalStoragePrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getDefaultValue();
+            }
+            rc.updateValue(msg.getVolume().getUuid(), psPreallocation);
         }
     }
 
diff --git a/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStoragePrimaryStorageGlobalConfig.java b/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStoragePrimaryStorageGlobalConfig.java
index b42b3b50bd..764aa73de2 100644
--- a/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStoragePrimaryStorageGlobalConfig.java
+++ b/plugin/localstorage/src/main/java/org/zstack/storage/primary/local/LocalStoragePrimaryStorageGlobalConfig.java
@@ -4,6 +4,7 @@
 import org.zstack.core.config.GlobalConfigDefinition;
 import org.zstack.core.config.GlobalConfigValidation;
 import org.zstack.header.storage.primary.PrimaryStorageVO;
+import org.zstack.header.volume.VolumeVO;
 import org.zstack.resourceconfig.BindResourceConfig;
 
 /**
@@ -17,6 +18,6 @@ public class LocalStoragePrimaryStorageGlobalConfig {
     public static GlobalConfig ALLOW_LIVE_MIGRATION = new GlobalConfig(CATEGORY, "liveMigrationWithStorage.allow");
 
     @GlobalConfigValidation(validValues = {"none", "metadata", "falloc", "full"})
-    @BindResourceConfig({PrimaryStorageVO.class})
+    @BindResourceConfig({VolumeVO.class, PrimaryStorageVO.class})
     public static GlobalConfig QCOW2_ALLOCATION = new GlobalConfig(CATEGORY, "qcow2.allocation");
 }
diff --git a/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageFactory.java b/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageFactory.java
index 017672a99a..0123453b42 100755
--- a/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageFactory.java
+++ b/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageFactory.java
@@ -40,6 +40,8 @@
 import org.zstack.header.vo.ResourceVO;
 import org.zstack.header.volume.*;
 import org.zstack.kvm.KVMConstant;
+import org.zstack.resourceconfig.ResourceConfig;
+import org.zstack.resourceconfig.ResourceConfigFacade;
 import org.zstack.storage.primary.ChangePrimaryStorageStatusMsg;
 import org.zstack.storage.primary.PrimaryStorageCapacityUpdater;
 import org.zstack.storage.primary.PrimaryStorageSystemTags;
@@ -80,6 +82,8 @@ public class NfsPrimaryStorageFactory implements NfsPrimaryStorageManager, Prima
     private RESTFacade restf;
     @Autowired
     protected EventFacade evtf;
+    @Autowired
+    private ResourceConfigFacade rcf;
 
     private Map<String, NfsPrimaryStorageBackend> backends = new HashMap<String, NfsPrimaryStorageBackend>();
     private Map<String, Map<String, NfsPrimaryToBackupStorageMediator>> mediators =
@@ -793,10 +797,20 @@ public void afterInstantiateVolume(InstantiateVolumeOnPrimaryStorageMsg msg) {
             }
         }
 
-        VolumeInventory volume = msg.getVolume();
-        volume.setPrimaryStorageUuid(msg.getPrimaryStorageUuid());
-        for (CreateQcow2VolumeProvisioningStrategyExtensionPoint exp : pluginRgty.getExtensionList(CreateQcow2VolumeProvisioningStrategyExtensionPoint.class)) {
-            exp.saveQcow2VolumeProvisioningStrategy(volume, hasBackingFile);
+        String preallocation = rcf.getResourceConfigValueByResourceType(NfsPrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                msg.getVolume().getUuid(), VolumeVO.class.getSimpleName(), String.class);
+        if (preallocation != null) {
+            return;
+        }
+
+        if (hasBackingFile) {
+            ResourceConfig rc = rcf.getResourceConfig(NfsPrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getIdentity());
+            String psPreallocation = rcf.getResourceConfigValueByResourceType(NfsPrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                    msg.getVolume().getPrimaryStorageUuid(), PrimaryStorageVO.class.getSimpleName(), String.class);
+            if (psPreallocation == null) {
+                psPreallocation = NfsPrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getDefaultValue();
+            }
+            rc.updateValue(msg.getVolume().getUuid(), psPreallocation);
         }
     }
 }
diff --git a/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageGlobalConfig.java b/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageGlobalConfig.java
index 2575292dcb..cfb0274d0f 100755
--- a/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageGlobalConfig.java
+++ b/plugin/nfsPrimaryStorage/src/main/java/org/zstack/storage/primary/nfs/NfsPrimaryStorageGlobalConfig.java
@@ -4,6 +4,7 @@
 import org.zstack.core.config.GlobalConfigDefinition;
 import org.zstack.core.config.GlobalConfigValidation;
 import org.zstack.header.storage.primary.PrimaryStorageVO;
+import org.zstack.header.volume.VolumeVO;
 import org.zstack.resourceconfig.BindResourceConfig;
 
 /**
@@ -19,6 +20,6 @@ public class NfsPrimaryStorageGlobalConfig {
     public static GlobalConfig GC_INTERVAL = new GlobalConfig(CATEGORY, "deletion.gcInterval");
 
     @GlobalConfigValidation(validValues = {"none", "metadata", "falloc", "full"})
-    @BindResourceConfig({PrimaryStorageVO.class})
+    @BindResourceConfig({VolumeVO.class, PrimaryStorageVO.class})
     public static GlobalConfig QCOW2_ALLOCATION = new GlobalConfig(CATEGORY, "qcow2.allocation");
 }
diff --git a/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageFactory.java b/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageFactory.java
index 76425ea21c..64fdc52bbf 100755
--- a/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageFactory.java
+++ b/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageFactory.java
@@ -28,6 +28,8 @@
 import org.zstack.header.storage.snapshot.CreateTemplateFromVolumeSnapshotExtensionPoint;
 import org.zstack.header.storage.snapshot.VolumeSnapshotInventory;
 import org.zstack.header.volume.*;
+import org.zstack.resourceconfig.ResourceConfig;
+import org.zstack.resourceconfig.ResourceConfigFacade;
 import org.zstack.storage.snapshot.PostMarkRootVolumeAsSnapshotExtension;
 import org.zstack.utils.Utils;
 import org.zstack.utils.logging.CLogger;
@@ -62,6 +64,8 @@ public class SMPPrimaryStorageFactory implements PrimaryStorageFactory, CreateTe
     private ErrorFacade errf;
     @Autowired
     private PluginRegistry pluginRgty;
+    @Autowired
+    private ResourceConfigFacade rcf;
 
     @Override
     public PrimaryStorageType getPrimaryStorageType() {
@@ -422,10 +426,20 @@ public void afterInstantiateVolume(InstantiateVolumeOnPrimaryStorageMsg msg) {
             }
         }
 
-        VolumeInventory volume = msg.getVolume();
-        volume.setPrimaryStorageUuid(msg.getPrimaryStorageUuid());
-        for (CreateQcow2VolumeProvisioningStrategyExtensionPoint exp : pluginRgty.getExtensionList(CreateQcow2VolumeProvisioningStrategyExtensionPoint.class)) {
-            exp.saveQcow2VolumeProvisioningStrategy(volume, hasBackingFile);
+        String preallocation = rcf.getResourceConfigValueByResourceType(SMPPrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                msg.getVolume().getUuid(), VolumeVO.class.getSimpleName(), String.class);
+        if (preallocation != null) {
+            return;
+        }
+
+        if (hasBackingFile) {
+            ResourceConfig rc = rcf.getResourceConfig(SMPPrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getIdentity());
+            String psPreallocation = rcf.getResourceConfigValueByResourceType(SMPPrimaryStorageGlobalConfig.QCOW2_ALLOCATION,
+                    msg.getVolume().getPrimaryStorageUuid(), PrimaryStorageVO.class.getSimpleName(), String.class);
+            if (psPreallocation == null) {
+                psPreallocation = SMPPrimaryStorageGlobalConfig.QCOW2_ALLOCATION.getDefaultValue();
+            }
+            rc.updateValue(msg.getVolume().getUuid(), psPreallocation);
         }
     }
 }
diff --git a/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageGlobalConfig.java b/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageGlobalConfig.java
index 9e4f6c7b62..dd68ba91cc 100644
--- a/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageGlobalConfig.java
+++ b/plugin/sharedMountPointPrimaryStorage/src/main/java/org/zstack/storage/primary/smp/SMPPrimaryStorageGlobalConfig.java
@@ -4,6 +4,7 @@
 import org.zstack.core.config.GlobalConfigDefinition;
 import org.zstack.core.config.GlobalConfigValidation;
 import org.zstack.header.storage.primary.PrimaryStorageVO;
+import org.zstack.header.volume.VolumeVO;
 import org.zstack.resourceconfig.BindResourceConfig;
 
 /**
@@ -17,6 +18,6 @@ public class SMPPrimaryStorageGlobalConfig {
     public static GlobalConfig GC_INTERVAL = new GlobalConfig(CATEGORY, "deletion.gcInterval");
 
     @GlobalConfigValidation(validValues = {"none", "metadata", "falloc", "full"})
-    @BindResourceConfig({PrimaryStorageVO.class})
+    @BindResourceConfig({VolumeVO.class, PrimaryStorageVO.class})
     public static GlobalConfig QCOW2_ALLOCATION = new GlobalConfig(CATEGORY, "qcow2.allocation");
 }