cleanup: cephfs resize code cleanup

The ceph fs subvolume resize support is available
in all the active ceph releases. Hence removing the
code to check the supportability of the feature.

Signed-off-by: karthik-us <ksubrahm@redhat.com>

internal/cephfs/core/volume.go

@@ -199,15 +199,13 @@ func (s *subVolumeClient) GetSubVolumeInfo(ctx context.Context) (*Subvolume, err
 type operationState int64
 
 const (
-	unknown operationState = iota
-	supported
+	supported operationState = iota
 	unsupported
 )
 
 type localClusterState struct {
-	// set the enum value i.e., unknown, supported,
+	// set the enum value i.e., supported or
 	// unsupported as per the state of the cluster.
-	resizeState                 operationState
 	subVolMetadataState         operationState
 	subVolSnapshotMetadataState operationState
 }
@@ -268,39 +266,22 @@ func (s *subVolumeClient) ExpandVolume(ctx context.Context, bytesQuota int64) er
 	return err
 }
 
-// ResizeVolume will try to use ceph fs subvolume resize command to resize the
-// subvolume. If the command is not available as a fallback it will use
-// CreateVolume to resize the subvolume.
+// ResizeVolume will use the ceph fs subvolume resize command to resize the
+// subvolume.
 func (s *subVolumeClient) ResizeVolume(ctx context.Context, bytesQuota int64) error {
 	newLocalClusterState(s.clusterID)
-	// resize subvolume when either it's supported, or when corresponding
-	// clusterID key was not present.
-	if clusterAdditionalInfo[s.clusterID].resizeState == unknown ||
-		clusterAdditionalInfo[s.clusterID].resizeState == supported {
-		fsa, err := s.conn.GetFSAdmin()
-		if err != nil {
-			log.ErrorLog(ctx, "could not get FSAdmin, can not resize volume %s:", s.FsName, err)
-
-			return err
-		}
-		_, err = fsa.ResizeSubVolume(s.FsName, s.SubvolumeGroup, s.VolID, fsAdmin.ByteCount(bytesQuota), true)
-		if err == nil {
-			clusterAdditionalInfo[s.clusterID].resizeState = supported
-
-			return nil
-		}
-		var invalid fsAdmin.NotImplementedError
-		// In case the error is other than invalid command return error to the caller.
-		if !errors.As(err, &invalid) {
-			log.ErrorLog(ctx, "failed to resize subvolume %s in fs %s: %s", s.VolID, s.FsName, err)
+	fsa, err := s.conn.GetFSAdmin()
+	if err != nil {
+		log.ErrorLog(ctx, "could not get FSAdmin, can not resize volume %s:", s.FsName, err)
 
-			return err
-		}
+		return err
+	}
+	_, err = fsa.ResizeSubVolume(s.FsName, s.SubvolumeGroup, s.VolID, fsAdmin.ByteCount(bytesQuota), true)
+	if err != nil {
+		log.ErrorLog(ctx, "failed to resize subvolume %s in fs %s: %s", s.VolID, s.FsName, err)
 	}
-	clusterAdditionalInfo[s.clusterID].resizeState = unsupported
-	s.Size = bytesQuota
 
-	return s.CreateVolume(ctx)
+	return err
 }
 
 // PurgSubVolume removes the subvolume.