Default volume migration done.

pkg/cluster/cluster.go

@@ -65,14 +65,6 @@ type kubeResources struct {
 	//PVCs are treated separately
 }
 
-type EBSVolume struct {
-	volumeId   string
-	volumeType string
-	size       int64
-	iops       int32
-	throughput int32
-}
-
 // Cluster describes postgresql cluster
 type Cluster struct {
 	kubeResources
@@ -98,7 +90,7 @@ type Cluster struct {
 	processMu        sync.RWMutex // protects the current operation for reporting, no need to hold the master mutex
 	specMu           sync.RWMutex // protects the spec for reporting, no need to hold the master mutex
 	ConnectionPooler map[PostgresRole]*ConnectionPoolerObjects
-	EBSVolumes       map[string]EBSVolume
+	EBSVolumes       map[string]volumes.VolumeProperties
 	VolumeResizer    volumes.VolumeResizer
 }
 

pkg/cluster/sync.go

@@ -55,7 +55,12 @@ func (c *Cluster) Sync(newSpec *acidv1.Postgresql) error {
 
 	c.logger.Debugf("syncing volumes using %q storage resize mode", c.OpConfig.StorageResizeMode)
 
+	if c.OpConfig.EnableEBSGp3Migration {
+		c.executeEBSMigration()
+	}
+
 	if c.OpConfig.StorageResizeMode == "mixed" {
+		// mixed op uses AWS API to adjust size,throughput,iops and calls pvc chance for file system resize
 
 		// resize pvc to adjust filesystem size until better K8s support
 		if err = c.syncVolumeClaims(); err != nil {

pkg/cluster/volumes.go

@@ -251,3 +251,31 @@ func getPodNameFromPersistentVolume(pv *v1.PersistentVolume) *spec.NamespacedNam
 func quantityToGigabyte(q resource.Quantity) int64 {
 	return q.ScaledValue(0) / (1 * constants.Gigabyte)
 }
+
+func (c *Cluster) executeEBSMigration() error {
+	if !c.OpConfig.EnableEBSGp3Migration {
+		return nil
+	}
+
+	pvs, _, err := c.listVolumesWithManifestSize(c.Spec.Volume)
+	if err != nil {
+		return fmt.Errorf("could not list persistent volumes: %v", err)
+	}
+
+	volumeIds := []string{}
+	for _, pv := range pvs {
+		volumeIds = append(volumeIds, pv.Spec.AWSElasticBlockStore.VolumeID)
+	}
+
+	awsVolumes, err := c.VolumeResizer.DescribeVolumes(volumeIds)
+
+	for _, volume := range awsVolumes {
+		if volume.VolumeType == "gp2" && volume.Size < c.OpConfig.EnableEBSGp3MaxSize {
+			c.logger.Info("Modifying EBS volume %s to type gp3 (%s)", volume.VolumeID, volume.Size)
+			c.VolumeResizer.ModifyVolume(volume.VolumeID, "gp3", volume.Size, 3000, 125)
+		}
+		c.EBSVolumes[volume.VolumeID] = volume
+	}
+
+	return nil
+}