diff -up LVM2.2.02.33/lib/filters/filter.c.vio LVM2.2.02.33/lib/filters/filter.c
--- LVM2.2.02.33/lib/filters/filter.c.vio	2008-03-05 10:47:06.000000000 -0500
+++ LVM2.2.02.33/lib/filters/filter.c	2008-03-05 10:49:43.000000000 -0500
@@ -77,6 +77,7 @@ static const device_info_t device_info[]
 	{"xvd", 16},		/* Xen virtual block device */
 	{"vdisk", 8},		/* SUN's LDOM virtual block device */
 	{"ps3disk", 16},	/* PlayStation 3 internal disk */
+	{"virtblk", 8},         /* VirtIO disk */
 	{NULL, 0}
 };