diff --git a/sys/dev/raid/vinum/vinumconfig.c b/sys/dev/raid/vinum/vinumconfig.c
index 3b926f3..88eb7fa 100644
--- a/sys/dev/raid/vinum/vinumconfig.c
+++ b/sys/dev/raid/vinum/vinumconfig.c
@@ -957,6 +957,7 @@ config_drive(int update)
 	throw_rude_remark(EINVAL, "Drive has no name\n");
     driveno = find_drive(token[1], 1);			    /* allocate a drive to initialize */
     drive = &DRIVE[driveno];				    /* and get a pointer */
+    kprintf("vinum[%s] drive %d drive %p - vnode is %p\n", __func__, driveno, drive, drive->vp);
     if (update && ((drive->flags & VF_NEWBORN) == 0))	    /* this drive exists already */
 	return;						    /* don't do anything */
     drive->flags &= ~VF_NEWBORN;			    /* no longer newly born */
diff --git a/sys/dev/raid/vinum/vinumio.c b/sys/dev/raid/vinum/vinumio.c
index 14b5c19..766213b 100644
--- a/sys/dev/raid/vinum/vinumio.c
+++ b/sys/dev/raid/vinum/vinumio.c
@@ -64,14 +64,22 @@ open_drive(struct drive *drive, struct proc *p, int verbose)
 	return EBUSY;
     dname = drive->devicename;
 
+    kprintf("vinum [%s]: rootdev %p\n", __func__, rootdev);
     if (rootdev) {
 	/*
 	 * Open via filesystem (future)
 	 */
 	error = nlookup_init(&nd, drive->devicename, UIO_SYSSPACE, NLC_FOLLOW);
-	if (error)
+	if (error) {
+	    kprintf("vinum [%s]: nlookup_init error %d\n", __func__, error);
 	    return error;
+	}
 	error = vn_open(&nd, NULL, FREAD|FWRITE, 0);
+	if (error) {
+	    kprintf("vinum [%s]: vn_open error %d\n", __func__, error);
+	    nlookup_done(&nd);
+	    return error;
+	}
 	drive->vp = nd.nl_open_vp;
 	nd.nl_open_vp = NULL;
 	nlookup_done(&nd);
@@ -175,9 +183,11 @@ init_drive(struct drive *drive, int verbose)
     if (drive->lasterror)
 	return drive->lasterror;
 
+    kprintf("vinum [%s]: drive vnode tag %d - %p\n", __func__, drive->vp->v_tag, (*drive->vp->v_ops)->vop_ioctl);
     drive->lasterror = VOP_IOCTL(drive->vp, DIOCGPART,
 				 (caddr_t)&drive->partinfo, FREAD|FWRITE,
 				 proc0.p_ucred, NULL);
+    kprintf("vinum [%s]: after VOP_IOCTL error %d device %s\n", __func__, drive->lasterror, drive->devicename);
     if (drive->lasterror) {
 	if (verbose)
 	    log(LOG_WARNING,
@@ -187,6 +197,7 @@ init_drive(struct drive *drive, int verbose)
 	close_drive(drive);
 	return drive->lasterror;
     }
+    kprintf("vinum [%s]: fstype %s\n", __func__, (drive->partinfo.fstype == FS_VINUM) ? "vinum" : "not vinum");
     if (drive->partinfo.fstype != FS_VINUM &&
 	!kuuid_is_vinum(&drive->partinfo.fstype_uuid)
     ) {	 
@@ -327,7 +338,9 @@ read_drive_label(struct drive *drive, int verbose)
     int result;
     struct vinum_hdr *vhdr;
 
+    kprintf("vinum[%s]: vnode is %p\n", __func__, drive->vp);
     error = init_drive(drive, 0);			    /* find the drive */
+    kprintf("vinum[%s]: vnode is %p error %d\n", __func__, drive->vp, error);
     if (error)						    /* find the drive */
 	return DL_CANT_OPEN;				    /* not ours */
 
diff --git a/sys/dev/raid/vinum/vinumioctl.c b/sys/dev/raid/vinum/vinumioctl.c
index 2914774..06fdca2 100644
--- a/sys/dev/raid/vinum/vinumioctl.c
+++ b/sys/dev/raid/vinum/vinumioctl.c
@@ -77,6 +77,7 @@ vinumioctl(struct dev_ioctl_args *ap)
     int fe;						    /* free list element number */
     struct _ioctl_reply *ioctl_reply;			    /* struct to return */
 
+    kprintf("vinum[%s] ioctl called!\n", __func__);
     error = 0;
 
     /* First, decide what we're looking at */