If setting a state to anything but open state, close access to vdev.

This fixes replacing drive in place, eg. zpool replace tank da1 da1.
Before it complained that device is already open.

MFC after:	1 week

1 files changed, 11 insertions, 0 deletions

diff --git a/sys/contrib/opensolaris/uts/common/fs/zfs/vdev.c b/sys/contrib/opensolaris/uts/common/fs/zfs/vdev.c
index e607744..b966099 100644
--- a/sys/contrib/opensolaris/uts/common/fs/zfs/vdev.c
+++ b/sys/contrib/opensolaris/uts/common/fs/zfs/vdev.c
@@ -1846,6 +1846,17 @@ vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, vdev_aux_t aux)
 	vd->vdev_state = state;
 	vd->vdev_stat.vs_aux = aux;
 
+	/*
+	 * If we are setting the vdev state to anything but an open state, then
+	 * always close the underlying device.  Otherwise, we keep accessible
+	 * but invalid devices open forever.  We don't call vdev_close() itself,
+	 * because that implies some extra checks (offline, etc) that we don't
+	 * want here.  This is limited to leaf devices, because otherwise
+	 * closing the device will affect other children.
+	 */
+	if (vdev_is_dead(vd) && vd->vdev_ops->vdev_op_leaf)
+		vd->vdev_ops->vdev_op_close(vd);
+
 	if (state == VDEV_STATE_CANT_OPEN) {
 		/*
 		 * If we fail to open a vdev during an import, we mark it as