created a new column called previous_id in the table volumes to make it easier to track volumes after their migration

Author: FelipeM525

engine/schema/src/main/java/com/cloud/storage/VolumeVO.java

@@ -48,6 +48,9 @@ public class VolumeVO implements Volume {
     @Column(name = "id")
     long id;
 
+    @Column(name = "previous_id")
+    private long previousId;
+
     @Column(name = "name")
     String name;
 
@@ -677,4 +680,12 @@ public void setExternalUuid(String externalUuid) {
     public String getEncryptFormat() { return encryptFormat; }
 
     public void setEncryptFormat(String encryptFormat) { this.encryptFormat = encryptFormat; }
+
+    public long getPreviousId() {
+        return previousId;
+    }
+
+    public void setPreviousId(long previousId) {
+        this.previousId = previousId;
+    }
 }

engine/schema/src/main/resources/META-INF/db/schema-41900to41910.sql

@@ -70,3 +70,5 @@ CALL `cloud`.`IDEMPOTENT_ADD_COLUMN`('cloud.user_data', 'removed', 'datetime COM
 UPDATE `cloud`.`configuration` SET
     `options` = 'FirstFitRouting,RandomAllocator,TestingAllocator,FirstFitAllocator,RecreateHostAllocator'
 WHERE `name` = 'host.allocators.order';
+
+CALL `cloud`.`IDEMPOTENT_ADD_COLUMN`('volumes','previous_id', 'bigint(20) unsigned DEFAULT NULL');

engine/storage/datamotion/src/main/java/org/apache/cloudstack/storage/motion/StorageSystemDataMotionStrategy.java

@@ -2283,6 +2283,8 @@ private void handlePostMigration(boolean success, Map<VolumeInfo, VolumeInfo> sr
             if (success) {
                 VolumeVO volumeVO = _volumeDao.findById(destVolumeInfo.getId());
                 volumeVO.setFormat(ImageFormat.QCOW2);
+                volumeVO.setPreviousId(srcVolumeInfo.getId());
+
                 _volumeDao.update(volumeVO.getId(), volumeVO);
 
                 _volumeService.copyPoliciesBetweenVolumesAndDestroySourceVolumeAfterMigration(Event.OperationSuccessed, null, srcVolumeInfo, destVolumeInfo, false);

engine/storage/volume/src/main/java/org/apache/cloudstack/storage/volume/VolumeServiceImpl.java

@@ -1720,6 +1720,7 @@ protected VolumeVO duplicateVolumeOnAnotherStorage(Volume volume, StoragePool po
             newVol.setPassphraseId(volume.getPassphraseId());
             newVol.setEncryptFormat(volume.getEncryptFormat());
         }
+        newVol.setPreviousId(volume.getId());
         return volDao.persist(newVol);
     }