1 files changed, 9 insertions, 0 deletions

diff --git a/sys/geom/part/g_part.c b/sys/geom/part/g_part.c
index 2c6b7f636010..aa7347a42ccf 100644
--- a/sys/geom/part/g_part.c
+++ b/sys/geom/part/g_part.c
@@ -1067,6 +1067,15 @@ g_part_ctl_undo(struct gctl_req *req, struct g_part_parms *gpp)
 			return (0);
 		}
 		table = gp->softc;
+
+		/*
+		 * Synthesize a disk geometry. Some partitioning schemes
+		 * depend on it and since some file systems need it even
+		 * when the partitition scheme doesn't, we do it here in
+		 * scheme-independent code.
+		 */
+		pp = cp->provider;
+		g_part_geometry(table, cp, pp->mediasize / pp->sectorsize);
 	}
 
 	error = G_PART_READ(table, cp);