[Qemu-devel] [PATCH 0/2] qemu-iotests: fix 067 on s390x

[Qemu-devel] [PATCH 0/2] qemu-iotests: fix 067 on s390x

[Sascha Silbe]

qemu-iotests test case 067 fails on s390x because the ordering of its
output is architecture-dependent (asynchronous vs. synchronous hotplug
handling). This series fixes the failure by filtering events from QMP
output for 067. There are two possible alternative approaches; see my
notes on the second patch.

Sascha Silbe (2):
  qemu-iotests: add _filter_qmp_events() for filtering out QMP events
  qemu-iotests: 067: ignore QMP events

 tests/qemu-iotests/067           |   4 +-
 tests/qemu-iotests/067.out       | 527 +++------------------------------------
 tests/qemu-iotests/common.filter |   6 +
 3 files changed, 41 insertions(+), 496 deletions(-)

-- 
2.1.4

[Qemu-devel] [PATCH 1/2] qemu-iotests: add _filter_qmp_events() for filtering out QMP events

[Sascha Silbe]

The order of some QMP events may depend on the architecture being
tested. Add support for filtering out QMP events so we can use a
single reference output for all architecture when the test doesn't
care about the events.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
---
 tests/qemu-iotests/common.filter | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
index 84b7434..b908aa2 100644
--- a/tests/qemu-iotests/common.filter
+++ b/tests/qemu-iotests/common.filter
@@ -178,6 +178,12 @@ _filter_qmp()
         -e '    QMP_VERSION'
 }
 
+# remove QMP events from output
+_filter_qmp_events()
+{
+    sed -e '/^{\(.*, \)"event": ".*}$/ d'
+}
+
 # replace driver-specific options in the "Formatting..." line
 _filter_img_create()
 {
-- 
2.1.4

Re: [Qemu-devel] [PATCH 1/2] qemu-iotests: add _filter_qmp_events() for filtering out QMP events

[Max Reitz]

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On 09.02.2016 14:23, Sascha Silbe wrote:
> The order of some QMP events may depend on the architecture being
> tested. Add support for filtering out QMP events so we can use a
> single reference output for all architecture when the test doesn't
> care about the events.
> 
> Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
> ---
>  tests/qemu-iotests/common.filter | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/tests/qemu-iotests/common.filter b/tests/qemu-iotests/common.filter
> index 84b7434..b908aa2 100644
> --- a/tests/qemu-iotests/common.filter
> +++ b/tests/qemu-iotests/common.filter
> @@ -178,6 +178,12 @@ _filter_qmp()
>          -e '    QMP_VERSION'
>  }
>  
> +# remove QMP events from output
> +_filter_qmp_events()
> +{
> +    sed -e '/^{\(.*, \)"event": ".*}$/ d'
> +}

There is a pretty good reason test 067 uses -qmp-pretty (as you yourself
say, the lines get pretty long otherwise, and if we have any change
within, the whole line needs to be changed). Using the following ugly
piece of code here instead, we would still be able to use it:

tr '\n' '\t' \
  | sed -e
's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g'
\
  | tr '\t' '\n'

(I'm too lazy for multi-line sed, obviously; and this will break if the
data contains any JSON objects in turn.)

The correct way would be to actually parse the JSON (using perl, python
or whatever) and remove all the top-level objects containing an "event"
key, obviously... But that's probably too much.

I'm not strictly against just dropping -qmp-pretty in 067, but there is
a good reason it's there.

Max

> +
>  # replace driver-specific options in the "Formatting..." line
>  _filter_img_create()
>  {
> 



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Re: [Qemu-devel] [PATCH 1/2] qemu-iotests: add _filter_qmp_events() for filtering out QMP events

[Sascha Silbe]

Dear Max,

Max Reitz <mreitz@redhat.com> writes:

>> +# remove QMP events from output
>> +_filter_qmp_events()
>> +{
>> +    sed -e '/^{\(.*, \)"event": ".*}$/ d'
>> +}
>
> There is a pretty good reason test 067 uses -qmp-pretty (as you yourself
> say, the lines get pretty long otherwise, and if we have any change
> within, the whole line needs to be changed).

Additionally, it's a lot easier to read when indented properly,
especially with the block info containing nested dicts.

> Using the following ugly
> piece of code here instead, we would still be able to use it:
>
> tr '\n' '\t' \
>   | sed -e
> 's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g'
> \
>   | tr '\t' '\n'

Nice trick. Why didn't I come up with it? ;)

It definitely is a bit ugly, though. We can't just drop the entire line
(using "d") as the entire stream now is a single line. Matching
parenthesis pairs is context sensitive, so we can't just use regular
expressions to aggregate results into lines. And before I start
implementing a JSON indenter in awk, I'd rather rewrite the whole test
in Python. So if we stay with the shell test for now, we need something
like your incantation above. It's not perfect, but good enough for now
and I can't think of anything significantly simpler right now either.

Will test your version and send a v2. Thanks for the suggestion!

Sascha
-- 
Softwareentwicklung Sascha Silbe, Niederhofenstraße 5/1, 71229 Leonberg
https://se-silbe.de/
USt-IdNr. DE281696641

Re: [Qemu-devel] [PATCH 1/2] qemu-iotests: add _filter_qmp_events() for filtering out QMP events

[Eric Blake]

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On 02/10/2016 11:52 AM, Sascha Silbe wrote:
> Dear Max,
> 
> Max Reitz <mreitz@redhat.com> writes:
> 
>>> +# remove QMP events from output
>>> +_filter_qmp_events()
>>> +{
>>> +    sed -e '/^{\(.*, \)"event": ".*}$/ d'
>>> +}
>>
>> There is a pretty good reason test 067 uses -qmp-pretty (as you yourself
>> say, the lines get pretty long otherwise, and if we have any change
>> within, the whole line needs to be changed).
> 
> Additionally, it's a lot easier to read when indented properly,
> especially with the block info containing nested dicts.
> 
>> Using the following ugly
>> piece of code here instead, we would still be able to use it:
>>
>> tr '\n' '\t' \
>>   | sed -e
>> 's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g'
>> \
>>   | tr '\t' '\n'
> 
> Nice trick. Why didn't I come up with it? ;)

Mishandles any event whose data includes nested dicts.  But a little bit
more creativity can do it in two passes (the first modifies the stream
to mark the start of an event, the second then does multiline matching
to nuke the entire event):

tr '\n' '\t' |
  sed 's/^{\(\s*"timestamp":\s*{[^}]*},\s*"event":\)/{MARK\1/g' |
  tr '\t' '\n' |
  sed '/^{MARK/,/^}/d'


> It definitely is a bit ugly, though. We can't just drop the entire line
> (using "d") as the entire stream now is a single line. Matching
> parenthesis pairs is context sensitive, so we can't just use regular
> expressions to aggregate results into lines. And before I start
> implementing a JSON indenter in awk, I'd rather rewrite the whole test
> in Python. So if we stay with the shell test for now, we need something
> like your incantation above. It's not perfect, but good enough for now
> and I can't think of anything significantly simpler right now either.
> 
> Will test your version and send a v2. Thanks for the suggestion!
> 
> Sascha
> 

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [PATCH 1/2] qemu-iotests: add _filter_qmp_events() for filtering out QMP events

[Sascha Silbe]

Dear Eric,

Eric Blake <eblake@redhat.com> writes:

>>> tr '\n' '\t' \
>>>   | sed -e
>>> 's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g'
>>> \
>>>   | tr '\t' '\n'
>> 
>> Nice trick. Why didn't I come up with it? ;)
>
> Mishandles any event whose data includes nested dicts.  But a little bit
> more creativity can do it in two passes (the first modifies the stream
> to mark the start of an event, the second then does multiline matching
> to nuke the entire event):
>
> tr '\n' '\t' |
>   sed 's/^{\(\s*"timestamp":\s*{[^}]*},\s*"event":\)/{MARK\1/g' |
>   tr '\t' '\n' |
>   sed '/^{MARK/,/^}/d'

This is starting to get too complex for my taste. If
_filter_qmp_events() isn't generic enough to be used by other test
cases, I can make it internal to 067. Alternatively I can port 067 to
Python, which can handle JSON data types natively with no need for
post-processing hacks.

Sascha
-- 
Softwareentwicklung Sascha Silbe, Niederhofenstraße 5/1, 71229 Leonberg
https://se-silbe.de/
USt-IdNr. DE281696641

[Qemu-devel] [PATCH 2/2] qemu-iotests: 067: ignore QMP events

[Sascha Silbe]

The relative ordering of the "device_del" return value and the
"DEVICE_DELETED" QMP event depends on the architecture being
tested. On x86 unplugging virtio disks is asynchronous
(=qdev_unplug()= → =hotplug_handler_unplug_request()=) while on s390x
it is synchronous (=qdev_unplug()= → =hotplug_handler_unplug()=). This
leads to the actual output on s390x consistently differing from the
reference output (that was probably produced on x86).

The easiest way to address this is to filter out QMP events in
067. The DEVICE_DELETED event is already getting explicitly tested by
the Python-based test case 139, so the test coverage should be
unaffected. Make use of _filter_qmp_events() introduced by the
previous patch to remove QMP events from the test case output and
adjust the reference output accordingly.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
---

This patch is a lot easier to read using the following command after
applying it locally (will hide all whitespace-only changes):

git log -p -1 --word-diff-regex='[^[:space:]]'

There are two alternative solutions:

1. Add per-architecture reference output for architectures with
   synchronous hotplug handling.

   Contributors often forget to update the reference output files
   after changing the qemu output. With per-architecture files, this
   gets a lot worse as contributors would need to run the tests for
   all supported architectures, possibly *on* all supported
   architectures, to notice the changed output and verify their
   changes to the reference output.

2. Reimplement 067 in Python.

   067 currently covers a lot of QMP output for (virtio) block
   devices, even if just as a side effect. If we don't want to risk
   reducing the test coverage, we'd need to either ensure some other
   test is covering this output (and will continue to do so in the
   future) or add a lot of explicit checking in the Python test. This
   isn't quite as bad as it sounds as we can check the entire result
   against a dictionary literal each time.

Both alternatives have the advantage that we don't need very long
lines (currently up to 753 characters) in the reference output.
---
 tests/qemu-iotests/067     |   4 +-
 tests/qemu-iotests/067.out | 527 +++------------------------------------------
 2 files changed, 35 insertions(+), 496 deletions(-)

diff --git a/tests/qemu-iotests/067 b/tests/qemu-iotests/067
index 3788534..8fd19f5 100755
--- a/tests/qemu-iotests/067
+++ b/tests/qemu-iotests/067
@@ -41,7 +41,7 @@ _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)'
 function do_run_qemu()
 {
     echo Testing: "$@"
-    $QEMU -nographic -qmp-pretty stdio -serial none "$@"
+    $QEMU -nographic -qmp stdio -serial none "$@"
     echo
 }
 
@@ -49,7 +49,7 @@ function run_qemu()
 {
     do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qmp | _filter_qemu \
                           | sed -e 's/\("actual-size":\s*\)[0-9]\+/\1SIZE/g' \
-                          | _filter_generated_node_ids
+                          | _filter_generated_node_ids | _filter_qmp_events
 }
 
 size=128M
diff --git a/tests/qemu-iotests/067.out b/tests/qemu-iotests/067.out
index ae3fccb..1877271 100644
--- a/tests/qemu-iotests/067.out
+++ b/tests/qemu-iotests/067.out
@@ -4,514 +4,53 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
 === -drive/-device and device_del ===
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk -device virtio-blk,drive=disk,id=virtio0
-{
-    QMP_VERSION
-}
-{
-    "return": {
-    }
-}
-{
-    "return": [
-        {
-            "io-status": "ok",
-            "device": "disk",
-            "locked": false,
-            "removable": false,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
-                },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
-            },
-            "type": "unknown"
-        }
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "path": "/machine/peripheral/virtio0/virtio-backend"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "device": "virtio0",
-        "path": "/machine/peripheral/virtio0"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "RESET"
-}
-{
-    "return": [
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "SHUTDOWN"
-}
+QMP_VERSION
+{"return": {}}
+{"return": [{"io-status": "ok", "device": "disk", "locked": false, "removable": false, "inserted": {"iops_rd": 0, "detect_zeroes": "off", "image": {"virtual-size": 134217728, "filename": "TEST_DIR/t.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": SIZE, "format-specific": {"type": "qcow2", "data": {"compat": "1.1", "lazy-refcounts": false, "refcount-bits": 16, "corrupt": false}}, "dirty-flag": false}, "iops_wr": 0, "ro": false, "node-name": "NODE_NAME", "backing_file_depth": 0, "drv": "qcow2", "iops": 0, "bps_wr": 0, "write_threshold": 0, "encrypted": false, "bps": 0, "bps_rd": 0, "cache": {"no-flush": false, "direct": false, "writeback": true}, "file": "TEST_DIR/t.qcow2", "encryption_key_missing": false}, "type": "unknown"}]}
+{"return": {}}
+{"return": {}}
+{"return": []}
+{"return": {}}
 
 
 === -drive/device_add and device_del ===
 
 Testing: -drive file=TEST_DIR/t.qcow2,format=qcow2,if=none,id=disk
-{
-    QMP_VERSION
-}
-{
-    "return": {
-    }
-}
-{
-    "return": [
-        {
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
-                },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
-            },
-            "type": "unknown"
-        }
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "path": "/machine/peripheral/virtio0/virtio-backend"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "device": "virtio0",
-        "path": "/machine/peripheral/virtio0"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "RESET"
-}
-{
-    "return": [
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "SHUTDOWN"
-}
+QMP_VERSION
+{"return": {}}
+{"return": [{"device": "disk", "locked": false, "removable": true, "inserted": {"iops_rd": 0, "detect_zeroes": "off", "image": {"virtual-size": 134217728, "filename": "TEST_DIR/t.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": SIZE, "format-specific": {"type": "qcow2", "data": {"compat": "1.1", "lazy-refcounts": false, "refcount-bits": 16, "corrupt": false}}, "dirty-flag": false}, "iops_wr": 0, "ro": false, "node-name": "NODE_NAME", "backing_file_depth": 0, "drv": "qcow2", "iops": 0, "bps_wr": 0, "write_threshold": 0, "encrypted": false, "bps": 0, "bps_rd": 0, "cache": {"no-flush": false, "direct": false, "writeback": true}, "file": "TEST_DIR/t.qcow2", "encryption_key_missing": false}, "type": "unknown"}]}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": []}
+{"return": {}}
 
 
 === drive_add/device_add and device_del ===
 
 Testing:
-{
-    QMP_VERSION
-}
-{
-    "return": {
-    }
-}
-{
-    "return": "OK\r\n"
-}
-{
-    "return": [
-        {
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
-                },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
-            },
-            "type": "unknown"
-        }
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "path": "/machine/peripheral/virtio0/virtio-backend"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "device": "virtio0",
-        "path": "/machine/peripheral/virtio0"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "RESET"
-}
-{
-    "return": [
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "SHUTDOWN"
-}
+QMP_VERSION
+{"return": {}}
+{"return": "OK\r\n"}
+{"return": [{"device": "disk", "locked": false, "removable": true, "inserted": {"iops_rd": 0, "detect_zeroes": "off", "image": {"virtual-size": 134217728, "filename": "TEST_DIR/t.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": SIZE, "format-specific": {"type": "qcow2", "data": {"compat": "1.1", "lazy-refcounts": false, "refcount-bits": 16, "corrupt": false}}, "dirty-flag": false}, "iops_wr": 0, "ro": false, "node-name": "NODE_NAME", "backing_file_depth": 0, "drv": "qcow2", "iops": 0, "bps_wr": 0, "write_threshold": 0, "encrypted": false, "bps": 0, "bps_rd": 0, "cache": {"no-flush": false, "direct": false, "writeback": true}, "file": "TEST_DIR/t.qcow2", "encryption_key_missing": false}, "type": "unknown"}]}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": []}
+{"return": {}}
 
 
 === blockdev_add/device_add and device_del ===
 
 Testing:
-{
-    QMP_VERSION
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "return": [
-        {
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
-                },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
-            },
-            "type": "unknown"
-        }
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "path": "/machine/peripheral/virtio0/virtio-backend"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "DEVICE_DELETED",
-    "data": {
-        "device": "virtio0",
-        "path": "/machine/peripheral/virtio0"
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "RESET"
-}
-{
-    "return": [
-        {
-            "io-status": "ok",
-            "device": "disk",
-            "locked": false,
-            "removable": true,
-            "inserted": {
-                "iops_rd": 0,
-                "detect_zeroes": "off",
-                "image": {
-                    "virtual-size": 134217728,
-                    "filename": "TEST_DIR/t.qcow2",
-                    "cluster-size": 65536,
-                    "format": "qcow2",
-                    "actual-size": SIZE,
-                    "format-specific": {
-                        "type": "qcow2",
-                        "data": {
-                            "compat": "1.1",
-                            "lazy-refcounts": false,
-                            "refcount-bits": 16,
-                            "corrupt": false
-                        }
-                    },
-                    "dirty-flag": false
-                },
-                "iops_wr": 0,
-                "ro": false,
-                "node-name": "NODE_NAME",
-                "backing_file_depth": 0,
-                "drv": "qcow2",
-                "iops": 0,
-                "bps_wr": 0,
-                "write_threshold": 0,
-                "encrypted": false,
-                "bps": 0,
-                "bps_rd": 0,
-                "cache": {
-                    "no-flush": false,
-                    "direct": false,
-                    "writeback": true
-                },
-                "file": "TEST_DIR/t.qcow2",
-                "encryption_key_missing": false
-            },
-            "type": "unknown"
-        }
-    ]
-}
-{
-    "return": {
-    }
-}
-{
-    "timestamp": {
-        "seconds":  TIMESTAMP,
-        "microseconds":  TIMESTAMP
-    },
-    "event": "SHUTDOWN"
-}
+QMP_VERSION
+{"return": {}}
+{"return": {}}
+{"return": [{"device": "disk", "locked": false, "removable": true, "inserted": {"iops_rd": 0, "detect_zeroes": "off", "image": {"virtual-size": 134217728, "filename": "TEST_DIR/t.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": SIZE, "format-specific": {"type": "qcow2", "data": {"compat": "1.1", "lazy-refcounts": false, "refcount-bits": 16, "corrupt": false}}, "dirty-flag": false}, "iops_wr": 0, "ro": false, "node-name": "NODE_NAME", "backing_file_depth": 0, "drv": "qcow2", "iops": 0, "bps_wr": 0, "write_threshold": 0, "encrypted": false, "bps": 0, "bps_rd": 0, "cache": {"no-flush": false, "direct": false, "writeback": true}, "file": "TEST_DIR/t.qcow2", "encryption_key_missing": false}, "type": "unknown"}]}
+{"return": {}}
+{"return": {}}
+{"return": {}}
+{"return": [{"io-status": "ok", "device": "disk", "locked": false, "removable": true, "inserted": {"iops_rd": 0, "detect_zeroes": "off", "image": {"virtual-size": 134217728, "filename": "TEST_DIR/t.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": SIZE, "format-specific": {"type": "qcow2", "data": {"compat": "1.1", "lazy-refcounts": false, "refcount-bits": 16, "corrupt": false}}, "dirty-flag": false}, "iops_wr": 0, "ro": false, "node-name": "NODE_NAME", "backing_file_depth": 0, "drv": "qcow2", "iops": 0, "bps_wr": 0, "write_threshold": 0, "encrypted": false, "bps": 0, "bps_rd": 0, "cache": {"no-flush": false, "direct": false, "writeback": true}, "file": "TEST_DIR/t.qcow2", "encryption_key_missing": false}, "type": "unknown"}]}
+{"return": {}}
 
 *** done
-- 
2.1.4