diff --git a/engine/api/src/org/apache/cloudstack/storage/datastore/db/SnapshotDataStoreVO.java b/engine/api/src/org/apache/cloudstack/storage/datastore/db/SnapshotDataStoreVO.java
index 300df1e9673..0fe5e088043 100644
--- a/engine/api/src/org/apache/cloudstack/storage/datastore/db/SnapshotDataStoreVO.java
+++ b/engine/api/src/org/apache/cloudstack/storage/datastore/db/SnapshotDataStoreVO.java
@@ -193,7 +193,7 @@ public class SnapshotDataStoreVO implements StateObject<ObjectInDataStoreStateMa
     }
 
     public String toString() {
-        return new StringBuilder("VolumeHost[").append(id).append("-").append(snapshotId).append("-")
+        return new StringBuilder("SnapshotDataStore[").append(id).append("-").append(snapshotId).append("-")
                 .append(dataStoreId).append(installPath).append("]").toString();
     }
 
diff --git a/engine/api/src/org/apache/cloudstack/storage/datastore/db/TemplateDataStoreVO.java b/engine/api/src/org/apache/cloudstack/storage/datastore/db/TemplateDataStoreVO.java
index 0af3e009634..eaff4f2135b 100755
--- a/engine/api/src/org/apache/cloudstack/storage/datastore/db/TemplateDataStoreVO.java
+++ b/engine/api/src/org/apache/cloudstack/storage/datastore/db/TemplateDataStoreVO.java
@@ -316,7 +316,7 @@ public class TemplateDataStoreVO implements StateObject<ObjectInDataStoreStateMa
 
     @Override
     public String toString() {
-        return new StringBuilder("TmplHost[").append(id).append("-").append(templateId).append("-").append(dataStoreId)
+        return new StringBuilder("TmplDataStore[").append(id).append("-").append(templateId).append("-").append(dataStoreId)
                 .append(installPath).append("]").toString();
     }
 
diff --git a/engine/api/src/org/apache/cloudstack/storage/datastore/db/VolumeDataStoreVO.java b/engine/api/src/org/apache/cloudstack/storage/datastore/db/VolumeDataStoreVO.java
index a7689d21309..37219266384 100755
--- a/engine/api/src/org/apache/cloudstack/storage/datastore/db/VolumeDataStoreVO.java
+++ b/engine/api/src/org/apache/cloudstack/storage/datastore/db/VolumeDataStoreVO.java
@@ -300,7 +300,7 @@ public class VolumeDataStoreVO implements StateObject<ObjectInDataStoreStateMach
     }
 
     public String toString() {
-        return new StringBuilder("VolumeHost[").append(id).append("-").append(volumeId).append("-").append(dataStoreId)
+        return new StringBuilder("VolumeDataStore[").append(id).append("-").append(volumeId).append("-").append(dataStoreId)
                 .append(installPath).append("]").toString();
     }
 
diff --git a/engine/schema/src/com/cloud/upgrade/dao/Upgrade410to420.java b/engine/schema/src/com/cloud/upgrade/dao/Upgrade410to420.java
index bfd8a60a97f..2e5fbcbc7b7 100644
--- a/engine/schema/src/com/cloud/upgrade/dao/Upgrade410to420.java
+++ b/engine/schema/src/com/cloud/upgrade/dao/Upgrade410to420.java
@@ -1892,7 +1892,7 @@ public class Upgrade410to420 implements DbUpgrade {
         try {
 
             volStoreInsert = conn
-                    .prepareStatement("INSERT INTO `cloud`.`volume_store_ref` (store_id,  volume_id, zone_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, checksum, error_str, local_path, install_path, url, destroyed, state) select host_id, volume_id, zone_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, checksum, error_str, local_path, install_path, url, destroyed, 'Allocated' from `cloud`.`volume_host_ref`");
+                    .prepareStatement("INSERT INTO `cloud`.`volume_store_ref` (store_id,  volume_id, zone_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, checksum, error_str, local_path, install_path, url, destroyed, update_count, ref_cnt, state) select host_id, volume_id, zone_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, checksum, error_str, local_path, install_path, url, destroyed, 0, 0, 'Allocated' from `cloud`.`volume_host_ref`");
             volStoreInsert.executeUpdate();
 
             volStoreUpdate = conn.prepareStatement("update `cloud`.`volume_store_ref` set state = 'Ready' where download_state = 'DOWNLOADED'");
@@ -1923,7 +1923,7 @@ public class Upgrade410to420 implements DbUpgrade {
         try {
 
             tmplStoreInsert = conn
-                    .prepareStatement("INSERT INTO `cloud`.`template_store_ref` (store_id,  template_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, error_str, local_path, install_path, url, destroyed, is_copy, store_role, state) select host_id, template_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, error_str, local_path, install_path, url, destroyed, is_copy, 'Image', 'Allocated' from `cloud`.`template_host_ref`");
+                    .prepareStatement("INSERT INTO `cloud`.`template_store_ref` (store_id,  template_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, error_str, local_path, install_path, url, destroyed, is_copy, update_count, ref_cnt, store_role, state) select host_id, template_id, created, last_updated, job_id, download_pct, size, physical_size, download_state, error_str, local_path, install_path, url, destroyed, is_copy, 0, 0, 'Image', 'Allocated' from `cloud`.`template_host_ref`");
             tmplStoreInsert.executeUpdate();
 
             tmplStoreUpdate = conn.prepareStatement("update `cloud`.`template_store_ref` set state = 'Ready' where download_state = 'DOWNLOADED'");
@@ -1952,7 +1952,7 @@ public class Upgrade410to420 implements DbUpgrade {
 
         try {
             snapshotStoreInsert = conn
-                    .prepareStatement("INSERT INTO `cloud`.`snapshot_store_ref` (store_id,  snapshot_id, created, size, parent_snapshot_id, install_path, state) select sechost_id, id, created, size, prev_snap_id, path, 'Ready' from `cloud`.`snapshots` where status = 'BackedUp' and sechost_id is not null and removed is null");
+                    .prepareStatement("INSERT INTO `cloud`.`snapshot_store_ref` (store_id,  snapshot_id, created, size, parent_snapshot_id, install_path, volume_id, update_count, ref_cnt, store_role, state) select sechost_id, id, created, size, prev_snap_id, path, volume_id, 0, 0, 'Image', 'Ready' from `cloud`.`snapshots` where status = 'BackedUp' and sechost_id is not null and removed is null");
             snapshotStoreInsert.executeUpdate();
         }
         catch (SQLException e) {