diff --git a/pkg/storegateway/bucket_e2e_test.go b/pkg/storegateway/bucket_e2e_test.go
index 72d72f73a91..ce9f9f142f8 100644
--- a/pkg/storegateway/bucket_e2e_test.go
+++ b/pkg/storegateway/bucket_e2e_test.go
@@ -27,6 +27,7 @@ import (
 
 	mimir_tsdb "github.com/grafana/mimir/pkg/storage/tsdb"
 	"github.com/grafana/mimir/pkg/storegateway/indexcache"
+	"github.com/grafana/mimir/pkg/storegateway/testhelper"
 
 	"github.com/thanos-io/thanos/pkg/block"
 	"github.com/thanos-io/thanos/pkg/block/metadata"
@@ -90,9 +91,9 @@ func prepareTestBlocks(t testing.TB, now time.Time, count int, dir string, bkt o
 
 		// Create two blocks per time slot. Only add 10 samples each so only one chunk
 		// gets created each. This way we can easily verify we got 10 chunks per series below.
-		id1, err := CreateBlock(ctx, dir, series[:4], 10, mint, maxt, extLset, 0, metadata.NoneFunc)
+		id1, err := testhelper.CreateBlock(ctx, dir, series[:4], 10, mint, maxt, extLset, 0, metadata.NoneFunc)
 		assert.NoError(t, err)
-		id2, err := CreateBlock(ctx, dir, series[4:], 10, mint, maxt, extLset, 0, metadata.NoneFunc)
+		id2, err := testhelper.CreateBlock(ctx, dir, series[4:], 10, mint, maxt, extLset, 0, metadata.NoneFunc)
 		assert.NoError(t, err)
 
 		dir1, dir2 := filepath.Join(dir, id1.String()), filepath.Join(dir, id2.String())
diff --git a/pkg/storegateway/helpers_test.go b/pkg/storegateway/testhelper/testhelper.go
similarity index 99%
rename from pkg/storegateway/helpers_test.go
rename to pkg/storegateway/testhelper/testhelper.go
index 9ee16eca066..4ec186f742f 100644
--- a/pkg/storegateway/helpers_test.go
+++ b/pkg/storegateway/testhelper/testhelper.go
@@ -2,7 +2,7 @@
 // Provenance-includes-location: https://github.com/thanos-io/thanos/blob/main/pkg/testutil/e2eutil/prometheus.go
 // Provenance-includes-license: Apache-2.0
 // Provenance-includes-copyright: The Thanos Authors.
-package storegateway
+package testhelper
 
 import (
 	"context"
diff --git a/pkg/util/test/copy.go b/pkg/util/test/copy.go
new file mode 100644
index 00000000000..ea5c7c05e5c
--- /dev/null
+++ b/pkg/util/test/copy.go
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: AGPL-3.0-only
+// Provenance-includes-location: https://github.com/thanos-io/thanos/blob/main/pkg/testutil/e2eutil/copy.go
+// Provenance-includes-license: Apache-2.0
+// Provenance-includes-copyright: The Thanos Authors.
+
+package test
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/grafana/dskit/runutil"
+	"github.com/pkg/errors"
+	"github.com/stretchr/testify/require"
+)
+
+func Copy(t testing.TB, src, dst string) {
+	require.NoError(t, copyRecursive(src, dst))
+}
+
+func copyRecursive(src, dst string) error {
+	return filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		relPath, err := filepath.Rel(src, path)
+		if err != nil {
+			return err
+		}
+
+		if info.IsDir() {
+			return os.MkdirAll(filepath.Join(dst, relPath), os.ModePerm)
+		}
+
+		if !info.Mode().IsRegular() {
+			return errors.Errorf("%s is not a regular file", path)
+		}
+
+		source, err := os.Open(filepath.Clean(path))
+		if err != nil {
+			return err
+		}
+		defer runutil.CloseWithErrCapture(&err, source, "close file")
+
+		destination, err := os.Create(filepath.Join(dst, relPath))
+		if err != nil {
+			return err
+		}
+		defer runutil.CloseWithErrCapture(&err, destination, "close file")
+
+		_, err = io.Copy(destination, source)
+		return err
+	})
+}