cephfs: upgrading mount syntax

Getting FsID instead of ClusterID as parameter

internal/cephfs/mounter/kernel.go

@@ -74,7 +74,7 @@ func (m *kernelMounter) mountKernel(
 
 	args := []string{
 		"-t", "ceph",
-		fmt.Sprintf("%s@%s.%s=%s", cr.ID, volOptions.ClusterID, volOptions.FsName, volOptions.RootPath),
+		fmt.Sprintf("%s@%s.%s=%s", cr.ID, volOptions.FsID, volOptions.FsName, volOptions.RootPath),
 		mountPoint,
 	}
 

internal/cephfs/store/volumeoptions.go

@@ -46,6 +46,7 @@ type VolumeOptions struct {
 	RequestName  string
 	NamePrefix   string
 	ClusterID    string
+	FsID         string
 	MetadataPool string
 	// ReservedID represents the ID reserved for a subvolume
 	ReservedID           string
@@ -318,6 +319,11 @@ func NewVolumeOptions(
 		return nil, err
 	}
 
+	opts.FsID, err = opts.conn.GetFSID()
+	if err != nil {
+		return nil, err
+	}
+
 	opts.MetadataPool, err = fs.GetMetadataPool(ctx, opts.FsName)
 	if err != nil {
 		return nil, err
@@ -442,6 +448,11 @@ func NewVolumeOptionsFromVolID(
 		return nil, nil, err
 	}
 
+	volOptions.FsID, err = volOptions.conn.GetFSID()
+	if err != nil {
+		return nil, nil, err
+	}
+
 	volOptions.MetadataPool, err = fs.GetMetadataPool(ctx, volOptions.FsName)
 	if err != nil {
 		return nil, nil, err
@@ -826,6 +837,11 @@ func NewSnapshotOptionsFromID(
 		return &volOptions, nil, &sid, err
 	}
 
+	volOptions.FsID, err = volOptions.conn.GetFSID()
+	if err != nil {
+		return &volOptions, nil, &sid, err
+	}
+
 	volOptions.MetadataPool, err = fs.GetMetadataPool(ctx, volOptions.FsName)
 	if err != nil {
 		return &volOptions, nil, &sid, err