Index: uspace/srv/fs/mfs/mfs.c
===================================================================
--- uspace/srv/fs/mfs/mfs.c	(revision 7a46bfe1e3cef419ea897f6581d7484b5f8d0955)
+++ uspace/srv/fs/mfs/mfs.c	(revision 1db44ea7ee4de819d854c7584806a032b665d2a0)
@@ -39,4 +39,6 @@
 
 #include <ipc/services.h>
+#include <stdlib.h>
+#include <str.h>
 #include <ns.h>
 #include <async.h>
@@ -52,4 +54,5 @@
 	.concurrent_read_write = false,
 	.write_retains_size = false,
+	.instance = 0,
 };
 
@@ -59,4 +62,14 @@
 
 	printf(NAME ": HelenOS Minix file system server\n");
+
+	if (argc == 3) {
+		if (!str_cmp(argv[1], "--instance"))
+			mfs_vfs_info.instance = strtol(argv[2], NULL, 10);
+		else {
+			printf(NAME " Unrecognized parameters");
+			rc = -1;
+			goto err;
+		}
+	}
 
 	async_sess_t *vfs_sess = service_connect_blocking(EXCHANGE_SERIALIZE,