1 files changed, 9 insertions, 0 deletions
diff --git a/btrfstune.c b/btrfstune.c
index 50724bae..da82f360 100644
--- a/btrfstune.c
+++ b/btrfstune.c
@@ -115,6 +115,7 @@ int main(int argc, char *argv[])
 	int skinny_flag = 0;
 	int ret;
 
+	optind = 1;
 	while(1) {
 		int c = getopt(argc, argv, "S:rx");
 		if (c < 0)
@@ -143,6 +144,13 @@ int main(int argc, char *argv[])
 		return 1;
 	}
 
+	if (!(seeding_flag + extrefs_flag + skinny_flag)) {
+		fprintf(stderr,
+			"ERROR: At least one option should be assigned.\n");
+		print_usage();
+		return 1;
+	}
+
 	if (check_mounted(device)) {
 		fprintf(stderr, "%s is mounted\n", device);
 		return 1;
@@ -176,6 +184,7 @@ int main(int argc, char *argv[])
 	} else {
 		root->fs_info->readonly = 1;
 		ret = 1;
+		fprintf(stderr, "btrfstune failed\n");
 	}
 	close_ctree(root);