diff --git a/app/vmselect/netstorage/netstorage.go b/app/vmselect/netstorage/netstorage.go
index 62c805ae4d..6cfa861f2b 100644
--- a/app/vmselect/netstorage/netstorage.go
+++ b/app/vmselect/netstorage/netstorage.go
@@ -177,10 +177,9 @@ type unpackWorkItem struct {
 }
 
 type unpackWork struct {
-	ws        []unpackWorkItem
-	fetchData bool
-	sbs       []*sortBlock
-	doneCh    chan error
+	ws     []unpackWorkItem
+	sbs    []*sortBlock
+	doneCh chan error
 }
 
 func (upw *unpackWork) reset() {
@@ -191,7 +190,6 @@ func (upw *unpackWork) reset() {
 		w.tr = storage.TimeRange{}
 	}
 	upw.ws = upw.ws[:0]
-	upw.fetchData = false
 	sbs := upw.sbs
 	for i := range sbs {
 		sbs[i] = nil
@@ -205,7 +203,7 @@ func (upw *unpackWork) reset() {
 func (upw *unpackWork) unpack(tmpBlock *storage.Block) {
 	for _, w := range upw.ws {
 		sb := getSortBlock()
-		if err := sb.unpackFrom(tmpBlock, w.br, w.tr, upw.fetchData); err != nil {
+		if err := sb.unpackFrom(tmpBlock, w.br, w.tr); err != nil {
 			putSortBlock(sb)
 			upw.doneCh <- fmt.Errorf("cannot unpack block: %w", err)
 			return
@@ -253,22 +251,23 @@ var unpackBatchSize = 8 * runtime.GOMAXPROCS(-1)
 // Unpack unpacks pts to dst.
 func (pts *packedTimeseries) Unpack(dst *Result, tr storage.TimeRange, fetchData bool) error {
 	dst.reset()
-
 	if err := dst.MetricName.Unmarshal(bytesutil.ToUnsafeBytes(pts.metricName)); err != nil {
 		return fmt.Errorf("cannot unmarshal metricName %q: %w", pts.metricName, err)
 	}
+	if !fetchData {
+		// Do not spend resources on data reading and unpacking.
+		return nil
+	}
 
 	// Feed workers with work
 	brsLen := len(pts.brs)
 	upws := make([]*unpackWork, 0, 1+brsLen/unpackBatchSize)
 	upw := getUnpackWork()
-	upw.fetchData = fetchData
 	for _, br := range pts.brs {
 		if len(upw.ws) >= unpackBatchSize {
 			unpackWorkCh <- upw
 			upws = append(upws, upw)
 			upw = getUnpackWork()
-			upw.fetchData = fetchData
 		}
 		upw.ws = append(upw.ws, unpackWorkItem{
 			br: br,
@@ -385,13 +384,11 @@ func (sb *sortBlock) reset() {
 	sb.NextIdx = 0
 }
 
-func (sb *sortBlock) unpackFrom(tmpBlock *storage.Block, br storage.BlockRef, tr storage.TimeRange, fetchData bool) error {
+func (sb *sortBlock) unpackFrom(tmpBlock *storage.Block, br storage.BlockRef, tr storage.TimeRange) error {
 	tmpBlock.Reset()
-	br.MustReadBlock(tmpBlock, fetchData)
-	if fetchData {
-		if err := tmpBlock.UnmarshalData(); err != nil {
-			return fmt.Errorf("cannot unmarshal block: %w", err)
-		}
+	br.MustReadBlock(tmpBlock, true)
+	if err := tmpBlock.UnmarshalData(); err != nil {
+		return fmt.Errorf("cannot unmarshal block: %w", err)
 	}
 	timestamps := tmpBlock.Timestamps()