check if the csi driver is supported the volume group snapshot cap wh…

…en the --enable-volume-group-snapshots arg is true

cmd/csi-snapshotter/main.go

@@ -20,19 +20,17 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"github.com/kubernetes-csi/external-snapshotter/v6/pkg/group_snapshotter"
 	"net/http"
 	"os"
 	"os/signal"
 	"strings"
 	"time"
 
-	utils "github.com/kubernetes-csi/external-snapshotter/v6/pkg/utils"
-
 	"google.golang.org/grpc"
 
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
+	coreinformers "k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/rest"
@@ -51,7 +49,8 @@ import (
 	clientset "github.com/kubernetes-csi/external-snapshotter/client/v6/clientset/versioned"
 	snapshotscheme "github.com/kubernetes-csi/external-snapshotter/client/v6/clientset/versioned/scheme"
 	informers "github.com/kubernetes-csi/external-snapshotter/client/v6/informers/externalversions"
-	coreinformers "k8s.io/client-go/informers"
+	"github.com/kubernetes-csi/external-snapshotter/v6/pkg/group_snapshotter"
+	utils "github.com/kubernetes-csi/external-snapshotter/v6/pkg/utils"
 )
 
 const (
@@ -229,6 +228,12 @@ func main() {
 	snapShotter := snapshotter.NewSnapshotter(csiConn)
 	var groupSnapshotter group_snapshotter.GroupSnapshotter
 	if *enableVolumeGroupSnapshots {
+		supportsCreateVolumeGroupSnapshot, err := supportsGroupControllerCreateVolumeGroupSnapshot(ctx, csiConn)
+		if err != nil {
+			klog.Errorf("error determining if driver supports create/delete group snapshot operations: %v", err)
+		} else if !supportsCreateVolumeGroupSnapshot {
+			klog.Warningf("CSI driver %s does not support GroupControllerCreateVolumeGroupSnapshot when the --enable-volume-group-snapshots flag is true", driverName)
+		}
 		groupSnapshotter = group_snapshotter.NewGroupSnapshotter(csiConn)
 		if len(*groupSnapshotNamePrefix) == 0 {
 			klog.Error("group snapshot name prefix cannot be of length 0")
@@ -317,3 +322,12 @@ func supportsControllerCreateSnapshot(ctx context.Context, conn *grpc.ClientConn
 
 	return capabilities[csi.ControllerServiceCapability_RPC_CREATE_DELETE_SNAPSHOT], nil
 }
+
+func supportsGroupControllerCreateVolumeGroupSnapshot(ctx context.Context, conn *grpc.ClientConn) (bool, error) {
+	capabilities, err := csirpc.GetGroupControllerCapabilities(ctx, conn)
+	if err != nil {
+		return false, err
+	}
+
+	return capabilities[csi.GroupControllerServiceCapability_RPC_CREATE_DELETE_GET_VOLUME_GROUP_SNAPSHOT], nil
+}

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/fsnotify/fsnotify v1.6.0
 	github.com/golang/mock v1.6.0
 	github.com/google/gofuzz v1.2.0
-	github.com/kubernetes-csi/csi-lib-utils v0.13.0
+	github.com/kubernetes-csi/csi-lib-utils v0.14.0
 	github.com/kubernetes-csi/csi-test/v4 v4.4.0
 	github.com/kubernetes-csi/external-snapshotter/client/v6 v6.1.0
 	github.com/prometheus/client_golang v1.16.0

go.sum

@@ -124,8 +124,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/kubernetes-csi/csi-lib-utils v0.13.0 h1:QrTdZVZbHlaSUBN9ReayBPnnF1N0edFIpUKBwVIBW3w=
-github.com/kubernetes-csi/csi-lib-utils v0.13.0/go.mod h1:JS9eDIZmSjx4F9o0bLTVK/qfhIIOifdjEfVXzxWapfE=
+github.com/kubernetes-csi/csi-lib-utils v0.14.0 h1:pusB32LkSd7GhuT8Z6cyRFqByujc28ygWV97ndaT19s=
+github.com/kubernetes-csi/csi-lib-utils v0.14.0/go.mod h1:uX8xidqxGJOLXtsfCCVsxWtZl/9NiLyd2DD3Nb+KoP4=
 github.com/kubernetes-csi/csi-test/v4 v4.4.0 h1:r0mnAwDURI24Vw3a/LyA/ga11yD5ZGuU7+REO35Na9s=
 github.com/kubernetes-csi/csi-test/v4 v4.4.0/go.mod h1:t1RzseMZJKy313nezI/d7TolbbiKpUZM3SXQvXxOX0w=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=

vendor/modules.txt

@@ -90,7 +90,7 @@ github.com/josharian/intern
 # github.com/json-iterator/go v1.1.12
 ## explicit; go 1.12
 github.com/json-iterator/go
-# github.com/kubernetes-csi/csi-lib-utils v0.13.0
+# github.com/kubernetes-csi/csi-lib-utils v0.14.0
 ## explicit; go 1.18
 github.com/kubernetes-csi/csi-lib-utils/connection
 github.com/kubernetes-csi/csi-lib-utils/leaderelection