From 0269fa2be355b2885e90bd676f63ae5fe4e8de08 Mon Sep 17 00:00:00 2001
From: John Snow <jsnow@redhat.com>
Date: Wed, 27 Mar 2019 17:22:35 +0100
Subject: [PATCH 097/163] iotests: Make 233 output more reliable
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RH-Author: John Snow <jsnow@redhat.com>
Message-id: <20190327172308.31077-23-jsnow@redhat.com>
Patchwork-id: 85189
O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 22/55] iotests: Make 233 output more reliable
Bugzilla: 1691009
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

From: Eric Blake <eblake@redhat.com>

We have a race between the nbd server and the client both trying
to report errors at once which can make the test sometimes fail
if the output lines swap order under load.  Break the race by
collecting server messages into a file and then replaying that
at the end of the test.

We may yet want to fix the server to not output ANYTHING for a
client action except when -v was used (to avoid malicious clients
from being able to DoS a server by filling up its logs), but that
is saved for a future patch.

Signed-off-by: Eric Blake <eblake@redhat.com>
CC: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190117193658.16413-2-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit d08980511d78480ffbbd9897b7fd050bd03d518d)
Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 tests/qemu-iotests/233     | 11 ++++++++---
 tests/qemu-iotests/233.out |  4 +++-
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/233 b/tests/qemu-iotests/233
index 1814efe..ab15c77 100755
--- a/tests/qemu-iotests/233
+++ b/tests/qemu-iotests/233
@@ -2,7 +2,7 @@
 #
 # Test NBD TLS certificate / authorization integration
 #
-# Copyright (C) 2018 Red Hat, Inc.
+# Copyright (C) 2018-2019 Red Hat, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -30,6 +30,7 @@ _cleanup()
 {
     nbd_server_stop
     _cleanup_test_img
+    rm -f "$TEST_DIR/server.log"
     tls_x509_cleanup
 }
 trap "_cleanup; exit \$status" 0 1 2 3 15
@@ -66,7 +67,7 @@ $QEMU_IO -c 'w -P 0x11 1m 1m' "$TEST_IMG" | _filter_qemu_io
 
 echo
 echo "== check TLS client to plain server fails =="
-nbd_server_start_tcp_socket -f $IMGFMT "$TEST_IMG"
+nbd_server_start_tcp_socket -f $IMGFMT "$TEST_IMG" 2> "$TEST_DIR/server.log"
 
 $QEMU_IMG info --image-opts \
     --object tls-creds-x509,dir=${tls_dir}/client1,endpoint=client,id=tls0 \
@@ -81,7 +82,7 @@ echo "== check plain client to TLS server fails =="
 nbd_server_start_tcp_socket \
     --object tls-creds-x509,dir=${tls_dir}/server1,endpoint=server,id=tls0,verify-peer=yes \
     --tls-creds tls0 \
-    -f $IMGFMT "$TEST_IMG"
+    -f $IMGFMT "$TEST_IMG" 2>> "$TEST_DIR/server.log"
 
 $QEMU_IMG info nbd://localhost:$nbd_tcp_port 2>&1 | sed "s/$nbd_tcp_port/PORT/g"
 
@@ -109,6 +110,10 @@ $QEMU_IO -c 'r -P 0x11 1m 1m' -c 'w -P 0x22 1m 1m' --image-opts \
 
 $QEMU_IO -f $IMGFMT -r -U -c 'r -P 0x22 1m 1m' "$TEST_IMG" | _filter_qemu_io
 
+echo
+echo "== final server log =="
+cat "$TEST_DIR/server.log"
+
 # success, all done
 echo "*** done"
 rm -f $seq.full
diff --git a/tests/qemu-iotests/233.out b/tests/qemu-iotests/233.out
index 5f41672..2199d8a 100644
--- a/tests/qemu-iotests/233.out
+++ b/tests/qemu-iotests/233.out
@@ -27,7 +27,6 @@ virtual size: 64M (67108864 bytes)
 disk size: unavailable
 
 == check TLS with different CA fails ==
-qemu-nbd: option negotiation failed: Verify failed: No certificate was found.
 qemu-img: Could not open 'driver=nbd,host=127.0.0.1,port=PORT,tls-creds=tls0': The certificate hasn't got a known issuer
 
 == perform I/O over TLS ==
@@ -37,4 +36,7 @@ wrote 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
 read 1048576/1048576 bytes at offset 1048576
 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+== final server log ==
+qemu-nbd: option negotiation failed: Verify failed: No certificate was found.
 *** done
-- 
1.8.3.1