--- vfs_mount.c	2010-03-17 15:30:45.000000000 +0100
+++ vfs_mount.c	2010-03-17 14:49:52.000000000 +0100
@@ -1798,6 +1806,8 @@
 	int		error;
 	char		patt[32];
 	char		errmsg[255];
+	char		nbtry;
+	int		rootmounttrymax;
 
 	vfsname = NULL;
 	path    = NULL;
@@ -1805,6 +1815,8 @@
 	ma	= NULL;
 	error   = EINVAL;
 	bzero(errmsg, sizeof(errmsg));
+	nbtry	= 0;
+	rootmounttrymax = 3;
 
 	if (mountfrom == NULL)
 		return (error);		/* don't complain */
@@ -1827,7 +1839,18 @@
 	ma = mount_arg(ma, "errmsg", errmsg, sizeof(errmsg));
 	ma = mount_arg(ma, "ro", NULL, 0);
 	ma = parse_mountroot_options(ma, options);
-	error = kernel_mount(ma, MNT_ROOTFS);
+
+	TUNABLE_INT_FETCH("vfs.root.mounttrymax", &rootmounttrymax);
+	while (1) {
+		error = kernel_mount(ma, MNT_ROOTFS);
+		if (nbtry < rootmounttrymax && error != 0) {
+			printf("Mount failed, retrying mount root from %s\n", mountfrom);
+			tsleep(&rootmounttrymax, PZERO | PDROP, "mount", hz);
+			nbtry++;
+		}
+		else
+			break;
+	}
 
 	if (error == 0) {
 		/*