[Qemu-devel] [PATCH 24/25] iotests: Add test for issuing discard over NBD

[Max Reitz <mreitz@redhat.com>]

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/126     | 105 +++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/126.out |  28 ++++++++++++
 tests/qemu-iotests/group   |   1 +
 3 files changed, 134 insertions(+)
 create mode 100755 tests/qemu-iotests/126
 create mode 100644 tests/qemu-iotests/126.out

diff --git a/tests/qemu-iotests/126 b/tests/qemu-iotests/126
new file mode 100755
index 0000000..efbfba2
--- /dev/null
+++ b/tests/qemu-iotests/126
@@ -0,0 +1,105 @@
+#!/bin/bash
+#
+# Test case for discard over NBD
+#
+# Copyright (C) 2015 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=mreitz@redhat.com
+
+seq="$(basename $0)"
+echo "QA output created by $seq"
+
+here="$PWD"
+tmp=/tmp/$$
+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
+. ./common.qemu
+
+# must support discard (and discarding must result in reading zeros)
+_supported_fmt raw qcow2
+_supported_proto file
+_supported_os Linux
+
+echo
+echo '=== Testing anonymous export ==='
+echo
+
+_make_test_img 1M
+$QEMU_IO -c 'write -P 42 0 1M' "$TEST_IMG" | _filter_qemu_io
+
+$QEMU_NBD -f $IMGFMT --discard unmap "$TEST_IMG" &
+nbd_pid=$!
+
+# Wait for the NBD server to come up
+sleep 1
+
+$QEMU_IO_PROG -f raw -c 'discard 0 1M' 'nbd://localhost' | _filter_qemu_io
+wait $nbd_pid
+
+$QEMU_IO -c 'read -P 0 0 1M' "$TEST_IMG" | _filter_qemu_io
+
+echo
+echo '=== Testing named export ==='
+echo
+
+_make_test_img 1M
+$QEMU_IO -c 'write -P 42 0 1M' "$TEST_IMG" | _filter_qemu_io
+
+_launch_qemu -drive if=none,id=drv,file="$TEST_IMG",format=$IMGFMT,discard=unmap \
+    2> >(_filter_nbd)
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'qmp_capabilities' }" \
+       'return'
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'nbd-server-start',
+       'arguments': { 'addr': { 'type': 'inet',
+                                'data': { 'host': '127.0.0.1',
+                                          'port': '10809' }}}}" \
+    'return'
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'nbd-server-add',
+       'arguments': { 'device': 'drv' }}" \
+    'return'
+
+$QEMU_IO_PROG -f raw -c 'discard 0 1M' 'nbd://localhost/drv' | _filter_qemu_io
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'quit' }" \
+    'return'
+
+wait=1 _cleanup_qemu
+
+$QEMU_IO -c 'read -P 0 0 1M' "$TEST_IMG" | _filter_qemu_io
+
+# success, all done
+echo
+echo '*** done'
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/126.out b/tests/qemu-iotests/126.out
new file mode 100644
index 0000000..1f05f6f
--- /dev/null
+++ b/tests/qemu-iotests/126.out
@@ -0,0 +1,28 @@
+QA output created by 126
+
+=== Testing anonymous export ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+discard 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+=== Testing named export ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576
+wrote 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": {}}
+{"return": {}}
+{"return": {}}
+discard 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": {}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
+read 1048576/1048576 bytes at offset 0
+1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+*** done
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index 9410b3a..f45a4ec 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -125,3 +125,4 @@
 118 rw auto
 123 rw auto quick
 125 rw auto quick
+126 rw auto quick
-- 
2.1.0