Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2017-08-15' into staging

nbd patches for 2017-08-15

- Eric Blake: nbd: Fix trace message for disconnect
- Stefan Hajnoczi: qemu-iotests: step clock after each test iteration
- Fam Zheng: 0/4 block: Fix non-shared storage migration
- Eric Blake: nbd-client: Fix regression when server sends garbage

# gpg: Signature made Tue 15 Aug 2017 16:06:02 BST
# gpg:                using RSA key 0xA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>"
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>"
# gpg:                 aka "[jpeg image of size 6874]"
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2017-08-15:
  nbd-client: Fix regression when server sends garbage
  iotests: Add non-shared storage migration case 192
  block-backend: Defer shared_perm tightening migration completion
  nbd: Fix order of bdrv_set_perm and bdrv_invalidate_cache
  stubs: Add vm state change handler stubs
  qemu-iotests: step clock after each test iteration
  nbd: Fix trace message for disconnect

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

4 files changed, 75 insertions, 0 deletions

diff --git a/tests/qemu-iotests/093 b/tests/qemu-iotests/093
index 2ed393a..ef39972 100755
--- a/tests/qemu-iotests/093
+++ b/tests/qemu-iotests/093
@@ -133,6 +133,10 @@ class ThrottleTestCase(iotests.QMPTestCase):
             self.assertTrue(check_limit(params['iops_rd'], rd_iops))
             self.assertTrue(check_limit(params['iops_wr'], wr_iops))
 
+        # Allow remaining requests to finish.  We submitted twice as many to
+        # ensure the throttle limit is reached.
+        self.vm.qtest("clock_step %d" % ns)
+
     # Connect N drives to a VM and test I/O in all of them
     def test_all(self):
         params = {"bps": 4096,
diff --git a/tests/qemu-iotests/192 b/tests/qemu-iotests/192
new file mode 100755
index 0000000..b50a2c0
--- /dev/null
+++ b/tests/qemu-iotests/192
@@ -0,0 +1,63 @@
+#!/bin/bash
+#
+# Test NBD export with -incoming (non-shared storage migration use case from
+# libvirt)
+#
+# Copyright (C) 2017 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
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# creator
+owner=famz@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+status=1	# failure is the default!
+
+_cleanup()
+{
+	_cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+_supported_fmt generic
+_supported_proto file
+_supported_os Linux
+
+if [ "$QEMU_DEFAULT_MACHINE" != "pc" ]; then
+    _notrun "Requires a PC machine"
+fi
+
+size=64M
+_make_test_img $size
+
+{
+echo "nbd_server_start unix:$TEST_DIR/nbd"
+echo "nbd_server_add -w drive0"
+echo "q"
+} | $QEMU -nodefaults -display none -monitor stdio \
+    -drive format=$IMGFMT,file=$TEST_IMG,if=ide,id=drive0 \
+    -incoming defer 2>&1 | _filter_testdir | _filter_qemu | _filter_hmp
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/192.out b/tests/qemu-iotests/192.out
new file mode 100644
index 0000000..1e0be4c
--- /dev/null
+++ b/tests/qemu-iotests/192.out
@@ -0,0 +1,7 @@
+QA output created by 192
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
+QEMU X.Y.Z monitor - type 'help' for more information
+(qemu) nbd_server_start unix:TEST_DIR/nbd
+(qemu) nbd_server_add -w drive0
+(qemu) q
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 1848077..afbdc42 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -186,3 +186,4 @@
 188 rw auto quick
 189 rw auto
 190 rw auto quick
+192 rw auto quick