From f4673017b3a026f44bb40b06d3d3d54fe42d2b67 Mon Sep 17 00:00:00 2001
From: Alexander Motin <mav@FreeBSD.org>
Date: Mon, 25 Mar 2013 07:24:58 +0000
Subject: [PATCH] Make GEOM MULTIPATH to report unmapped bio support if
 underling path report it.  GEOM MULTIPATH itself never touches the data and
 so transparent.

---
 sys/geom/multipath/g_multipath.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/geom/multipath/g_multipath.c b/sys/geom/multipath/g_multipath.c
index 8b633760266..72cd2c5bb67 100644
--- a/sys/geom/multipath/g_multipath.c
+++ b/sys/geom/multipath/g_multipath.c
@@ -522,6 +522,8 @@ g_multipath_add_disk(struct g_geom *gp, struct g_provider *pp)
 		sc->sc_pp->stripesize = pp->stripesize;
 		sc->sc_pp->stripeoffset = pp->stripeoffset;
 	}
+	if (sc->sc_pp != NULL)
+		sc->sc_pp->flags |= pp->flags & G_PF_ACCEPT_UNMAPPED;
 	mtx_lock(&sc->sc_mtx);
 	cp->index = 0;
 	sc->sc_ndisks++;