iotests: fix the redirection order in 083

It should redirect stdout to /dev/null first,
then redirect stderr to whatever stdout currently points at.

Signed-off-by: Wei Jiangang <weijg.fnst@cn.fujitsu.com>
Message-id: 1461665601-14908-1-git-send-email-weijg.fnst@cn.fujitsu.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

diff --git a/tests/qemu-iotests/083 b/tests/qemu-iotests/083
index bc724ae05889984eb5f47c27ba2be77df3799904..bff9360048fbb5a366257a841ec1632a3f1d4e46 100755 (executable)
--- a/tests/qemu-iotests/083
+++ b/tests/qemu-iotests/083
@@ -43,7 +43,7 @@ choose_tcp_port() {
 
 wait_for_tcp_port() {
        while ! (netstat --tcp --listening --numeric | \
-                grep "$1.*0\\.0\\.0\\.0:\\*.*LISTEN") 2>&1 >/dev/null; do
+                grep "$1.*0\\.0\\.0\\.0:\\*.*LISTEN") >/dev/null 2>&1; do
                sleep 0.1
        done
 }
@@ -70,7 +70,7 @@ EOF
                nbd_url="nbd:127.0.0.1:$port:exportname=foo"
        fi
 
-       $PYTHON nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" 2>&1 >/dev/null &
+       $PYTHON nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" >/dev/null 2>&1 &
        wait_for_tcp_port "127\\.0\\.0\\.1:$port"
        $QEMU_IO -c "read 0 512" "$nbd_url" 2>&1 | _filter_qemu_io | _filter_nbd