iotests/277: use dot slash for nbd-fault-injector.py running

If you run './check 277', check includes common.config which adjusts
$PATH to include '.' first, and therefore finds nbd-fault-injector.py
on PATH.  But if you run './277' directly, there is nothing to adjust
PATH, and if '.' is not already on your PATH by other means, the test
fails because the executable is not found.  Adjust how we invoke the
helper executable to avoid needing a PATH search in the first place.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210116134424.82867-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/tests/qemu-iotests/277 b/tests/qemu-iotests/277
index d34f87021f8e3a45f2361d083a042670555aa6a1..a39ce2d8738c77f8f451188f0aed3291929770ec 100755 (executable)
--- a/tests/qemu-iotests/277
+++ b/tests/qemu-iotests/277
@@ -42,7 +42,7 @@ def make_conf_file(event):
 def start_server_NBD(event):
     make_conf_file(event)
 
-    srv = subprocess.Popen(['nbd-fault-injector.py', '--classic-negotiation',
+    srv = subprocess.Popen(['./nbd-fault-injector.py', '--classic-negotiation',
                            nbd_sock, conf_file], stdout=subprocess.PIPE,
                            stderr=subprocess.STDOUT, universal_newlines=True)
     line = srv.stdout.readline()