Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Thu 16 Jun 2016 15:01:27 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (39 commits)
  hbitmap: add 'pos < size' asserts
  iotests: Add test for oVirt-like storage migration
  iotests: Add test for post-mirror backing chains
  block/null: Implement bdrv_refresh_filename()
  block/mirror: Fix target backing BDS
  block: Allow replacement of a BDS by its overlay
  rbd:change error_setg() to error_setg_errno()
  iotests: 095: Clean up QEMU before showing image info
  block: Create the commit block job before reopening any image
  block: Prevent sleeping jobs from resuming if they have been paused
  block: use the block job list in qmp_query_block_jobs()
  block: use the block job list in bdrv_drain_all()
  block: Fix snapshot=on with aio=native
  block: Remove bs->zero_beyond_eof
  qcow2: Let vmstate call qcow2_co_preadv/pwrite directly
  block: Make bdrv_load/save_vmstate coroutine_fns
  block: Allow .bdrv_load/save_vmstate() to return 0/-errno
  block: Make .bdrv_load_vmstate() vectored
  block: Introduce bdrv_preadv()
  doc: Fix mailing list address in tests/qemu-iotests/README
  ...

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

8 files changed, 496 insertions, 11 deletions

diff --git a/tests/qemu-iotests/087.out b/tests/qemu-iotests/087.out
index 055c553cdb..a95c4b0be8 100644
--- a/tests/qemu-iotests/087.out
+++ b/tests/qemu-iotests/087.out
@@ -42,22 +42,14 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 encryption=on
 Testing: -S
 QMP_VERSION
 {"return": {}}
-IMGFMT built-in AES encryption is deprecated
-Support for it will be removed in a future release.
-You can use 'qemu-img convert' to switch to an
-unencrypted IMGFMT image, or a LUKS raw image.
-{"error": {"class": "GenericError", "desc": "blockdev-add doesn't support encrypted devices"}}
+{"error": {"class": "GenericError", "desc": "Use of AES-CBC encrypted IMGFMT images is no longer supported in system emulators"}}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
 
 Testing:
 QMP_VERSION
 {"return": {}}
-IMGFMT built-in AES encryption is deprecated
-Support for it will be removed in a future release.
-You can use 'qemu-img convert' to switch to an
-unencrypted IMGFMT image, or a LUKS raw image.
-{"error": {"class": "GenericError", "desc": "Guest must be stopped for opening of encrypted image"}}
+{"error": {"class": "GenericError", "desc": "Use of AES-CBC encrypted IMGFMT images is no longer supported in system emulators"}}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
 
diff --git a/tests/qemu-iotests/095 b/tests/qemu-iotests/095
index dad04b9ac9..030adb22e1 100755
--- a/tests/qemu-iotests/095
+++ b/tests/qemu-iotests/095
@@ -74,6 +74,8 @@ _send_qemu_cmd $h "{ 'execute': 'block-commit',
                                  'arguments': { 'device': 'test',
                                  'top': '"${TEST_IMG}.snp1"' } }" "BLOCK_JOB_COMPLETED"
 
+_cleanup_qemu
+
 echo
 echo "=== Base image info after commit and resize ==="
 TEST_IMG="${TEST_IMG}.base" _img_info | _filter_img_info
diff --git a/tests/qemu-iotests/155 b/tests/qemu-iotests/155
new file mode 100755
index 0000000000..4057b5e2aa
--- /dev/null
+++ b/tests/qemu-iotests/155
@@ -0,0 +1,261 @@
+#!/usr/bin/env python
+#
+# Test whether the backing BDSs are correct after completion of a
+# mirror block job; in "existing" modes (drive-mirror with
+# mode=existing and blockdev-mirror) the backing chain should not be
+# overridden.
+#
+# Copyright (C) 2016 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/>.
+#
+
+import os
+import iotests
+from iotests import qemu_img
+
+back0_img = os.path.join(iotests.test_dir, 'back0.' + iotests.imgfmt)
+back1_img = os.path.join(iotests.test_dir, 'back1.' + iotests.imgfmt)
+back2_img = os.path.join(iotests.test_dir, 'back2.' + iotests.imgfmt)
+source_img = os.path.join(iotests.test_dir, 'source.' + iotests.imgfmt)
+target_img = os.path.join(iotests.test_dir, 'target.' + iotests.imgfmt)
+
+
+# Class variables for controlling its behavior:
+#
+# existing: If True, explicitly create the target image and blockdev-add it
+# target_backing: If existing is True: Use this filename as the backing file
+#                 of the target image
+#                 (None: no backing file)
+# target_blockdev_backing: If existing is True: Pass this dict as "backing"
+#                          for the blockdev-add command
+#                          (None: do not pass "backing")
+# target_real_backing: If existing is True: The real filename of the backing
+#                      image during runtime, only makes sense if
+#                      target_blockdev_backing is not None
+#                      (None: same as target_backing)
+
+class BaseClass(iotests.QMPTestCase):
+    target_blockdev_backing = None
+    target_real_backing = None
+
+    def setUp(self):
+        qemu_img('create', '-f', iotests.imgfmt, back0_img, '1M')
+        qemu_img('create', '-f', iotests.imgfmt, '-b', back0_img, back1_img)
+        qemu_img('create', '-f', iotests.imgfmt, '-b', back1_img, back2_img)
+        qemu_img('create', '-f', iotests.imgfmt, '-b', back2_img, source_img)
+
+        self.vm = iotests.VM()
+        self.vm.add_drive(None, '', 'none')
+        self.vm.launch()
+
+        # Add the BDS via blockdev-add so it stays around after the mirror block
+        # job has been completed
+        result = self.vm.qmp('blockdev-add',
+                             options={'node-name': 'source',
+                                      'driver': iotests.imgfmt,
+                                      'file': {'driver': 'file',
+                                               'filename': source_img}})
+        self.assert_qmp(result, 'return', {})
+
+        result = self.vm.qmp('x-blockdev-insert-medium',
+                             device='drive0', node_name='source')
+        self.assert_qmp(result, 'return', {})
+
+        self.assertIntactSourceBackingChain()
+
+        if self.existing:
+            if self.target_backing:
+                qemu_img('create', '-f', iotests.imgfmt,
+                         '-b', self.target_backing, target_img, '1M')
+            else:
+                qemu_img('create', '-f', iotests.imgfmt, target_img, '1M')
+
+            if self.cmd == 'blockdev-mirror':
+                options = { 'node-name': 'target',
+                            'driver': iotests.imgfmt,
+                            'file': { 'driver': 'file',
+                                      'filename': target_img } }
+                if self.target_blockdev_backing:
+                    options['backing'] = self.target_blockdev_backing
+
+                result = self.vm.qmp('blockdev-add', options=options)
+                self.assert_qmp(result, 'return', {})
+
+    def tearDown(self):
+        self.vm.shutdown()
+        os.remove(source_img)
+        os.remove(back2_img)
+        os.remove(back1_img)
+        os.remove(back0_img)
+        try:
+            os.remove(target_img)
+        except OSError:
+            pass
+
+    def findBlockNode(self, node_name, id=None):
+        if id:
+            result = self.vm.qmp('query-block')
+            for device in result['return']:
+                if device['device'] == id:
+                    if node_name:
+                        self.assert_qmp(device, 'inserted/node-name', node_name)
+                    return device['inserted']
+        else:
+            result = self.vm.qmp('query-named-block-nodes')
+            for node in result['return']:
+                if node['node-name'] == node_name:
+                    return node
+
+        self.fail('Cannot find node %s/%s' % (id, node_name))
+
+    def assertIntactSourceBackingChain(self):
+        node = self.findBlockNode('source')
+
+        self.assert_qmp(node, 'image' + '/backing-image' * 0 + '/filename',
+                        source_img)
+        self.assert_qmp(node, 'image' + '/backing-image' * 1 + '/filename',
+                        back2_img)
+        self.assert_qmp(node, 'image' + '/backing-image' * 2 + '/filename',
+                        back1_img)
+        self.assert_qmp(node, 'image' + '/backing-image' * 3 + '/filename',
+                        back0_img)
+        self.assert_qmp_absent(node, 'image' + '/backing-image' * 4)
+
+    def assertCorrectBackingImage(self, node, default_image):
+        if self.existing:
+            if self.target_real_backing:
+                image = self.target_real_backing
+            else:
+                image = self.target_backing
+        else:
+            image = default_image
+
+        if image:
+            self.assert_qmp(node, 'image/backing-image/filename', image)
+        else:
+            self.assert_qmp_absent(node, 'image/backing-image')
+
+
+# Class variables for controlling its behavior:
+#
+# cmd: Mirroring command to execute, either drive-mirror or blockdev-mirror
+
+class MirrorBaseClass(BaseClass):
+    def runMirror(self, sync):
+        if self.cmd == 'blockdev-mirror':
+            result = self.vm.qmp(self.cmd, device='drive0', sync=sync,
+                                 target='target')
+        else:
+            if self.existing:
+                mode = 'existing'
+            else:
+                mode = 'absolute-paths'
+            result = self.vm.qmp(self.cmd, device='drive0', sync=sync,
+                                 target=target_img, format=iotests.imgfmt,
+                                 mode=mode, node_name='target')
+
+        self.assert_qmp(result, 'return', {})
+
+        self.vm.event_wait('BLOCK_JOB_READY')
+
+        result = self.vm.qmp('block-job-complete', device='drive0')
+        self.assert_qmp(result, 'return', {})
+
+        self.vm.event_wait('BLOCK_JOB_COMPLETED')
+
+    def testFull(self):
+        self.runMirror('full')
+
+        node = self.findBlockNode('target', 'drive0')
+        self.assertCorrectBackingImage(node, None)
+        self.assertIntactSourceBackingChain()
+
+    def testTop(self):
+        self.runMirror('top')
+
+        node = self.findBlockNode('target', 'drive0')
+        self.assertCorrectBackingImage(node, back2_img)
+        self.assertIntactSourceBackingChain()
+
+    def testNone(self):
+        self.runMirror('none')
+
+        node = self.findBlockNode('target', 'drive0')
+        self.assertCorrectBackingImage(node, source_img)
+        self.assertIntactSourceBackingChain()
+
+
+class TestDriveMirrorAbsolutePaths(MirrorBaseClass):
+    cmd = 'drive-mirror'
+    existing = False
+
+class TestDriveMirrorExistingNoBacking(MirrorBaseClass):
+    cmd = 'drive-mirror'
+    existing = True
+    target_backing = None
+
+class TestDriveMirrorExistingBacking(MirrorBaseClass):
+    cmd = 'drive-mirror'
+    existing = True
+    target_backing = 'null-co://'
+
+class TestBlockdevMirrorNoBacking(MirrorBaseClass):
+    cmd = 'blockdev-mirror'
+    existing = True
+    target_backing = None
+
+class TestBlockdevMirrorBacking(MirrorBaseClass):
+    cmd = 'blockdev-mirror'
+    existing = True
+    target_backing = 'null-co://'
+
+class TestBlockdevMirrorForcedBacking(MirrorBaseClass):
+    cmd = 'blockdev-mirror'
+    existing = True
+    target_backing = None
+    target_blockdev_backing = { 'driver': 'null-co' }
+    target_real_backing = 'null-co://'
+
+
+class TestCommit(BaseClass):
+    existing = False
+
+    def testCommit(self):
+        result = self.vm.qmp('block-commit', device='drive0', base=back1_img)
+        self.assert_qmp(result, 'return', {})
+
+        self.vm.event_wait('BLOCK_JOB_READY')
+
+        result = self.vm.qmp('block-job-complete', device='drive0')
+        self.assert_qmp(result, 'return', {})
+
+        self.vm.event_wait('BLOCK_JOB_COMPLETED')
+
+        node = self.findBlockNode(None, 'drive0')
+        self.assert_qmp(node, 'image' + '/backing-image' * 0 + '/filename',
+                        back1_img)
+        self.assert_qmp(node, 'image' + '/backing-image' * 1 + '/filename',
+                        back0_img)
+        self.assert_qmp_absent(node, 'image' + '/backing-image' * 2 +
+                               '/filename')
+
+        self.assertIntactSourceBackingChain()
+
+
+BaseClass = None
+MirrorBaseClass = None
+
+if __name__ == '__main__':
+    iotests.main(supported_fmts=['qcow2'])
diff --git a/tests/qemu-iotests/155.out b/tests/qemu-iotests/155.out
new file mode 100644
index 0000000000..4176bb9402
--- /dev/null
+++ b/tests/qemu-iotests/155.out
@@ -0,0 +1,5 @@
+...................
+----------------------------------------------------------------------
+Ran 19 tests
+
+OK
diff --git a/tests/qemu-iotests/156 b/tests/qemu-iotests/156
new file mode 100755
index 0000000000..cc95ff1f98
--- /dev/null
+++ b/tests/qemu-iotests/156
@@ -0,0 +1,174 @@
+#!/bin/bash
+#
+# Tests oVirt-like storage migration:
+#  - Create snapshot
+#  - Create target image with (not yet existing) target backing chain
+#    (i.e. just write the name of a soon-to-be-copied-over backing file into it)
+#  - drive-mirror the snapshot to the target with mode=existing and sync=top
+#  - In the meantime, copy the original source files to the destination via
+#    conventional means (i.e. outside of qemu)
+#  - Complete the drive-mirror job
+#  - Delete all source images
+#
+# Copyright (C) 2016 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"
+status=1	# failure is the default!
+
+_cleanup()
+{
+    rm -f "$TEST_IMG{,.target}{,.backing,.overlay}"
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.qemu
+
+_supported_fmt qcow2 qed
+_supported_proto generic
+_supported_os Linux
+
+# Create source disk
+TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
+_make_test_img -b "$TEST_IMG.backing" 1M
+
+$QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
+$QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
+
+_launch_qemu -drive if=none,id=source,file="$TEST_IMG"
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'qmp_capabilities' }" \
+    'return'
+
+# Create snapshot
+TEST_IMG="$TEST_IMG.overlay" _make_test_img -b "$TEST_IMG" 1M
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'blockdev-snapshot-sync',
+       'arguments': { 'device': 'source',
+                      'snapshot-file': '$TEST_IMG.overlay',
+                      'format': '$IMGFMT',
+                      'mode': 'existing' } }" \
+    'return'
+
+# Write something to the snapshot
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"write -P 3 128k 128k\"' } }" \
+    'return'
+
+# Create target image
+TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -b "$TEST_IMG.target" 1M
+
+# Mirror snapshot
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'drive-mirror',
+       'arguments': { 'device': 'source',
+                      'target': '$TEST_IMG.target.overlay',
+                      'mode': 'existing',
+                      'sync': 'top' } }" \
+    'return'
+
+# Wait for convergence
+_send_qemu_cmd $QEMU_HANDLE \
+    '' \
+    'BLOCK_JOB_READY'
+
+# Write some more
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"write -P 4 192k 64k\"' } }" \
+    'return'
+
+# Copy source backing chain to the target before completing the job
+cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
+cp "$TEST_IMG" "$TEST_IMG.target"
+$QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
+
+# Complete block job
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'block-job-complete',
+       'arguments': { 'device': 'source' } }" \
+    ''
+
+_send_qemu_cmd $QEMU_HANDLE \
+    '' \
+    'BLOCK_JOB_COMPLETED'
+
+# Remove the source images
+rm -f "$TEST_IMG{,.backing,.overlay}"
+
+echo
+
+# Check online disk contents
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"read -P 1 0k 64k\"' } }" \
+    'return'
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"read -P 2 64k 64k\"' } }" \
+    'return'
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"read -P 3 128k 64k\"' } }" \
+    'return'
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'human-monitor-command',
+       'arguments': { 'command-line':
+                      'qemu-io source \"read -P 4 192k 64k\"' } }" \
+    'return'
+
+echo
+
+_send_qemu_cmd $QEMU_HANDLE \
+    "{ 'execute': 'quit' }" \
+    'return'
+
+wait=1 _cleanup_qemu
+
+echo
+
+# Check offline disk contents
+$QEMU_IO -c 'read -P 1 0k 64k' \
+         -c 'read -P 2 64k 64k' \
+         -c 'read -P 3 128k 64k' \
+         -c 'read -P 4 192k 64k' \
+         "$TEST_IMG.target.overlay" | _filter_qemu_io
+
+echo
+
+# success, all done
+echo '*** done'
+rm -f $seq.full
+status=0
diff --git a/tests/qemu-iotests/156.out b/tests/qemu-iotests/156.out
new file mode 100644
index 0000000000..3af82ae540
--- /dev/null
+++ b/tests/qemu-iotests/156.out
@@ -0,0 +1,48 @@
+QA output created by 156
+Formatting 'TEST_DIR/t.IMGFMT.backing', fmt=IMGFMT size=1048576
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.backing
+wrote 262144/262144 bytes at offset 0
+256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+wrote 196608/196608 bytes at offset 65536
+192 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": {}}
+Formatting 'TEST_DIR/t.IMGFMT.overlay', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT
+{"return": {}}
+wrote 131072/131072 bytes at offset 131072
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+Formatting 'TEST_DIR/t.IMGFMT.target.overlay', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.target
+{"return": {}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "source", "len": 131072, "offset": 131072, "speed": 0, "type": "mirror"}}
+wrote 65536/65536 bytes at offset 196608
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+{"return": {}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "source", "len": 196608, "offset": 196608, "speed": 0, "type": "mirror"}}
+
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+read 65536/65536 bytes at offset 131072
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+read 65536/65536 bytes at offset 196608
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+{"return": ""}
+
+{"return": {}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}
+
+read 65536/65536 bytes at offset 0
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 65536
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 131072
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+read 65536/65536 bytes at offset 196608
+64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+*** done
diff --git a/tests/qemu-iotests/README b/tests/qemu-iotests/README
index 4ccfdd1cc0..6079b401ae 100644
--- a/tests/qemu-iotests/README
+++ b/tests/qemu-iotests/README
@@ -17,4 +17,5 @@ additional options to test further image formats or I/O methods.
 * Feedback and patches
 
 Please send improvements to the test suite, general feedback or just
-reports of failing tests cases to qemu-devel@savannah.nongnu.org.
+reports of failing tests cases to qemu-devel@nongnu.org with a CC:
+to qemu-block@nongnu.org.
diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
index ab1d76efdf..1c6fcb6018 100644
--- a/tests/qemu-iotests/group
+++ b/tests/qemu-iotests/group
@@ -154,3 +154,5 @@
 150 rw auto quick
 152 rw auto quick
 154 rw auto backing quick
+155 rw auto
+156 rw auto quick