iotests: Unify log outputs between Python 2 and 3

When dumping an object into the log, there are differences between
Python 2 and 3.  First, unicode strings are prefixed by 'u' in Python 2
(they are no longer in 3, because unicode strings are the default
there).  Second, the order of keys in dicts may differ.  Third,
especially long numbers are longs in Python 2 and thus get an 'L'
suffix, which does not happen in Python 3.

We can get around all of these differences by dumping objects (lists and
dicts) in a language-independent format, namely JSON.  The JSON
generator even allows emitting dicts with their keys sorted
alphabetically.

This changes the output of all tests that use these logging functions
(dict keys are ordered now, strings in dicts are now enclosed in double
quotes instead of single quotes, the 'L' suffix of large integers is
dropped, and "true" and "false" are now in lower case).
The quote change necessitates a small change to a filter used in test
207.

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20181022135307.14398-10-mreitz@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

16 files changed, 744 insertions, 740 deletions

diff --git a/tests/qemu-iotests/194.out b/tests/qemu-iotests/194.out
index 50ac50d..7185785 100644
--- a/tests/qemu-iotests/194.out
+++ b/tests/qemu-iotests/194.out
@@ -1,18 +1,18 @@
 Launching VMs...
 Launching NBD server on destination...
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 Starting `drive-mirror` on source...
-{u'return': {}}
+{"return": {}}
 Waiting for `drive-mirror` to complete...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror-job0', u'type': u'mirror', u'speed': 0, u'len': 1073741824, u'offset': 1073741824}, u'event': u'BLOCK_JOB_READY'}
+{"data": {"device": "mirror-job0", "len": 1073741824, "offset": 1073741824, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_READY", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 Starting migration...
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'setup'}, u'event': u'MIGRATION'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'active'}, u'event': u'MIGRATION'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'completed'}, u'event': u'MIGRATION'}
+{"return": {}}
+{"data": {"status": "setup"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 Gracefully ending the `drive-mirror` job on source...
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror-job0', u'type': u'mirror', u'speed': 0, u'len': 1073741824, u'offset': 1073741824}, u'event': u'BLOCK_JOB_COMPLETED'}
+{"return": {}}
+{"data": {"device": "mirror-job0", "len": 1073741824, "offset": 1073741824, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 Stopping the NBD server on destination...
-{u'return': {}}
+{"return": {}}
diff --git a/tests/qemu-iotests/202.out b/tests/qemu-iotests/202.out
index d5ea374..9a8619e 100644
--- a/tests/qemu-iotests/202.out
+++ b/tests/qemu-iotests/202.out
@@ -1,11 +1,11 @@
 Launching VM...
 Adding IOThread...
-{u'return': {}}
+{"return": {}}
 Adding blockdevs...
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 Setting iothread...
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 Creating external snapshots...
-{u'return': {}}
+{"return": {}}
diff --git a/tests/qemu-iotests/203.out b/tests/qemu-iotests/203.out
index 1a11f09..9d4abba 100644
--- a/tests/qemu-iotests/203.out
+++ b/tests/qemu-iotests/203.out
@@ -1,11 +1,11 @@
 Launching VM...
 Setting IOThreads...
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 Enabling migration QMP events...
-{u'return': {}}
+{"return": {}}
 Starting migration...
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'setup'}, u'event': u'MIGRATION'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'active'}, u'event': u'MIGRATION'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'completed'}, u'event': u'MIGRATION'}
+{"return": {}}
+{"data": {"status": "setup"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"status": "active"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"status": "completed"}, "event": "MIGRATION", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
diff --git a/tests/qemu-iotests/206.out b/tests/qemu-iotests/206.out
index 789eebe..91f4db5 100644
--- a/tests/qemu-iotests/206.out
+++ b/tests/qemu-iotests/206.out
@@ -1,16 +1,16 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
-
-{'execute': 'blockdev-add', 'arguments': {'node_name': 'imgfile', 'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}}
-{u'return': {}}
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': 'imgfile', 'size': 134217728}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
+
+{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2", "node_name": "imgfile"}}
+{"return": {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "imgfile", "size": 134217728}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -24,15 +24,15 @@ Format specific information:
 
 === Successful image creation (inline blockdev-add, explicit defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'nocow': False, 'preallocation': 'off', 'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2", "nocow": false, "preallocation": "off", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 65536, 'refcount-bits': 16, 'version': 'v3', 'preallocation': 'off', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}, 'lazy-refcounts': False, 'driver': 'qcow2', 'size': 67108864}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 65536, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2"}, "lazy-refcounts": false, "preallocation": "off", "refcount-bits": 16, "size": 67108864, "version": "v3"}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -46,15 +46,15 @@ Format specific information:
 
 === Successful image creation (v3 non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'nocow': True, 'preallocation': 'falloc', 'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2", "nocow": true, "preallocation": "falloc", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 2097152, 'refcount-bits': 1, 'version': 'v3', 'preallocation': 'metadata', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}, 'lazy-refcounts': True, 'driver': 'qcow2', 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 2097152, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2"}, "lazy-refcounts": true, "preallocation": "metadata", "refcount-bits": 1, "size": 33554432, "version": "v3"}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -68,15 +68,15 @@ Format specific information:
 
 === Successful image creation (v2 non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 512, 'backing-fmt': 'qcow2', 'driver': 'qcow2', 'version': 'v2', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}, 'backing-file': 'TEST_DIR/PID-t.qcow2.base', 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"backing-file": "TEST_DIR/PID-t.qcow2.base", "backing-fmt": "qcow2", "cluster-size": 512, "driver": "qcow2", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2"}, "size": 33554432, "version": "v2"}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -90,10 +90,10 @@ Format specific information:
 
 === Successful image creation (encrypted) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'encrypt': {'key-secret': 'keysec0', 'iter-time': 10, 'cipher-mode': 'ctr', 'ivgen-hash-alg': 'md5', 'cipher-alg': 'twofish-128', 'format': 'luks', 'ivgen-alg': 'plain64', 'hash-alg': 'sha1'}, 'driver': 'qcow2', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.qcow2'}, 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "encrypt": {"cipher-alg": "twofish-128", "cipher-mode": "ctr", "format": "luks", "hash-alg": "sha1", "iter-time": 10, "ivgen-alg": "plain64", "ivgen-hash-alg": "md5", "key-secret": "keysec0"}, "file": {"driver": "file", "filename": "TEST_DIR/PID-t.qcow2"}, "size": 33554432}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -144,113 +144,113 @@ Format specific information:
 
 === Invalid BlockdevRef ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': "this doesn't exist", 'size': 33554432}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "this doesn't exist", "size": 33554432}}}
+{"return": {}}
 Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid sizes ===
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': 'node0', 'size': 1234}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 1234}}}
+{"return": {}}
 Job failed: Image size must be a multiple of 512 bytes
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': 'node0', 'size': 18446744073709551104L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 18446744073709551104}}}
+{"return": {}}
 Job failed: Could not resize image: Image size cannot be negative
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': 'node0', 'size': 9223372036854775808L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 9223372036854775808}}}
+{"return": {}}
 Job failed: Could not resize image: Image size cannot be negative
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'qcow2', 'file': 'node0', 'size': 9223372036854775296}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 9223372036854775296}}}
+{"return": {}}
 Job failed: Could not resize image: Failed to grow the L1 table: File too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid version ===
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'version': 'v1', 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'error': {u'class': u'GenericError', u'desc': u"Invalid parameter 'v1'"}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "size": 67108864, "version": "v1"}}}
+{"error": {"class": "GenericError", "desc": "Invalid parameter 'v1'"}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'lazy-refcounts': True, 'version': 'v2', 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "lazy-refcounts": true, "size": 67108864, "version": "v2"}}}
+{"return": {}}
 Job failed: Lazy refcounts only supported with compatibility level 1.1 and above (use version=v3 or greater)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'refcount-bits': 8, 'version': 'v2', 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "refcount-bits": 8, "size": 67108864, "version": "v2"}}}
+{"return": {}}
 Job failed: Different refcount widths than 16 bits require compatibility level 1.1 or above (use version=v3 or greater)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid backing file options ===
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'preallocation': 'full', 'driver': 'qcow2', 'backing-file': '/dev/null', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"backing-file": "/dev/null", "driver": "qcow2", "file": "node0", "preallocation": "full", "size": 67108864}}}
+{"return": {}}
 Job failed: Backing file and preallocation cannot be used at the same time
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'backing-fmt': 'qcow2', 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"backing-fmt": "qcow2", "driver": "qcow2", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Backing format cannot be used without backing file
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid cluster size ===
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 1234, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 1234, "driver": "qcow2", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a power of two between 512 and 2048k
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 128, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 128, "driver": "qcow2", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a power of two between 512 and 2048k
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 4194304, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 4194304, "driver": "qcow2", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a power of two between 512 and 2048k
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 0, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 0, "driver": "qcow2", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a power of two between 512 and 2048k
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 512, 'driver': 'qcow2', 'file': 'node0', 'size': 281474976710656}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 512, "driver": "qcow2", "file": "node0", "size": 281474976710656}}}
+{"return": {}}
 Job failed: Could not resize image: Failed to grow the L1 table: File too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid refcount width ===
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'refcount-bits': 128, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "refcount-bits": 128, "size": 67108864}}}
+{"return": {}}
 Job failed: Refcount width must be a power of two and may not exceed 64 bits
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'refcount-bits': 0, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "refcount-bits": 0, "size": 67108864}}}
+{"return": {}}
 Job failed: Refcount width must be a power of two and may not exceed 64 bits
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'refcount-bits': 7, 'driver': 'qcow2', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "qcow2", "file": "node0", "refcount-bits": 7, "size": 67108864}}}
+{"return": {}}
 Job failed: Refcount width must be a power of two and may not exceed 64 bits
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
diff --git a/tests/qemu-iotests/207 b/tests/qemu-iotests/207
index 2d86a3d..c617ee7 100755
--- a/tests/qemu-iotests/207
+++ b/tests/qemu-iotests/207
@@ -28,7 +28,7 @@ iotests.verify_image_format(supported_fmts=['raw'])
 iotests.verify_protocol(supported=['ssh'])
 
 def filter_hash(msg):
-    return re.sub("'hash': '[0-9a-f]+'", "'hash': HASH", msg)
+    return re.sub('"hash": "[0-9a-f]+"', '"hash": HASH', msg)
 
 def blockdev_create(vm, options):
     result = vm.qmp_log('blockdev-create', job_id='job0', options=options,
diff --git a/tests/qemu-iotests/207.out b/tests/qemu-iotests/207.out
index 078b7e6..45ac7c2 100644
--- a/tests/qemu-iotests/207.out
+++ b/tests/qemu-iotests/207.out
@@ -1,9 +1,9 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 4194304}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 4194304}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}}
 file format: IMGFMT
@@ -16,49 +16,49 @@ virtual size: 4.0M (4194304 bytes)
 
 === Test host-key-check options ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'mode': 'none'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 8388608}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"mode": "none"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 8388608}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}}
 file format: IMGFMT
 virtual size: 8.0M (8388608 bytes)
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'mode': 'known_hosts'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 4194304}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"mode": "known_hosts"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 4194304}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}}
 file format: IMGFMT
 virtual size: 4.0M (4194304 bytes)
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'hash': 'wrong', 'type': 'md5', 'mode': 'hash'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 2097152}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"hash": "wrong", "mode": "hash", "type": "md5"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 2097152}}}
+{"return": {}}
 Job failed: remote host key does not match host_key_check 'wrong'
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'hash': HASH, 'type': 'md5', 'mode': 'hash'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 8388608}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"hash": HASH, "mode": "hash", "type": "md5"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 8388608}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}}
 file format: IMGFMT
 virtual size: 8.0M (8388608 bytes)
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'hash': 'wrong', 'type': 'sha1', 'mode': 'hash'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 2097152}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"hash": "wrong", "mode": "hash", "type": "sha1"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 2097152}}}
+{"return": {}}
 Job failed: remote host key does not match host_key_check 'wrong'
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'hash': HASH, 'type': 'sha1', 'mode': 'hash'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 4194304}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"hash": HASH, "mode": "hash", "type": "sha1"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 4194304}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"server.host": "127.0.0.1", "server.port": "22", "driver": "ssh", "path": "TEST_IMG"}}
 file format: IMGFMT
@@ -66,15 +66,15 @@ virtual size: 4.0M (4194304 bytes)
 
 === Invalid path and user ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': '/this/is/not/an/existing/path', 'host-key-check': {'mode': 'none'}, 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 4194304}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"mode": "none"}, "path": "/this/is/not/an/existing/path", "server": {"host": "127.0.0.1", "port": "22"}}, "size": 4194304}}}
+{"return": {}}
 Job failed: failed to open remote file '/this/is/not/an/existing/path': Failed opening remote file (libssh2 error code: -31)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'ssh', 'location': {'path': 'TEST_DIR/PID-t.img', 'host-key-check': {'mode': 'none'}, 'user': 'invalid user', 'server': {'host': '127.0.0.1', 'port': '22'}}, 'size': 4194304}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "ssh", "location": {"host-key-check": {"mode": "none"}, "path": "TEST_DIR/PID-t.img", "server": {"host": "127.0.0.1", "port": "22"}, "user": "invalid user"}, "size": 4194304}}}
+{"return": {}}
 Job failed: failed to authenticate using publickey authentication and the identities held by your ssh-agent
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
diff --git a/tests/qemu-iotests/208.out b/tests/qemu-iotests/208.out
index 3687e9d..9ff2582 100644
--- a/tests/qemu-iotests/208.out
+++ b/tests/qemu-iotests/208.out
@@ -1,9 +1,9 @@
 Launching VM...
 Starting NBD server...
-{u'return': {}}
+{"return": {}}
 Adding NBD export...
-{u'return': {}}
+{"return": {}}
 Creating external snapshot...
-{u'return': {}}
+{"return": {}}
 Stopping NBD server...
-{u'return': {}}
+{"return": {}}
diff --git a/tests/qemu-iotests/210.out b/tests/qemu-iotests/210.out
index 078ba54..923cb05 100644
--- a/tests/qemu-iotests/210.out
+++ b/tests/qemu-iotests/210.out
@@ -1,16 +1,16 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.luks'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
-
-{'execute': 'blockdev-add', 'arguments': {'node_name': 'imgfile', 'driver': 'file', 'filename': 'TEST_DIR/PID-t.luks'}}
-{u'return': {}}
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'iter-time': 10, 'driver': 'luks', 'file': 'imgfile', 'size': 134217728}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.luks", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
+
+{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.luks", "node_name": "imgfile"}}
+{"return": {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "imgfile", "iter-time": 10, "key-secret": "keysec0", "size": 134217728}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"driver": "file", "filename": "TEST_IMG"}, "key-secret": "keysec0"}
 file format: IMGFMT
@@ -54,15 +54,15 @@ Format specific information:
 
 === Successful image creation (with non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.luks'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.luks", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'hash-alg': 'sha1', 'cipher-mode': 'ctr', 'cipher-alg': 'twofish-128', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.luks'}, 'iter-time': 10, 'ivgen-alg': 'plain64', 'ivgen-hash-alg': 'md5', 'driver': 'luks', 'size': 67108864}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cipher-alg": "twofish-128", "cipher-mode": "ctr", "driver": "luks", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.luks"}, "hash-alg": "sha1", "iter-time": 10, "ivgen-alg": "plain64", "ivgen-hash-alg": "md5", "key-secret": "keysec0", "size": 67108864}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"driver": "file", "filename": "TEST_IMG"}, "key-secret": "keysec0"}
 file format: IMGFMT
@@ -106,18 +106,18 @@ Format specific information:
 
 === Invalid BlockdevRef ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'luks', 'file': "this doesn't exist", 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "this doesn't exist", "size": 67108864}}}
+{"return": {}}
 Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Zero size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'iter-time': 10, 'driver': 'luks', 'file': 'node0', 'size': 0}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "node0", "iter-time": 10, "key-secret": "keysec0", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: json:{"driver": "IMGFMT", "file": {"driver": "file", "filename": "TEST_IMG"}, "key-secret": "keysec0"}
 file format: IMGFMT
@@ -161,34 +161,34 @@ Format specific information:
 
 === Invalid sizes ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'driver': 'luks', 'file': 'node0', 'size': 18446744073709551104L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "node0", "key-secret": "keysec0", "size": 18446744073709551104}}}
+{"return": {}}
 Job failed: The requested file size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'driver': 'luks', 'file': 'node0', 'size': 9223372036854775808L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "node0", "key-secret": "keysec0", "size": 9223372036854775808}}}
+{"return": {}}
 Job failed: The requested file size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'key-secret': 'keysec0', 'driver': 'luks', 'file': 'node0', 'size': 9223372036854775296}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "luks", "file": "node0", "key-secret": "keysec0", "size": 9223372036854775296}}}
+{"return": {}}
 Job failed: The requested file size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Resize image with invalid sizes ===
 
-{'execute': 'block_resize', 'arguments': {'size': 9223372036854775296, 'node_name': 'node1'}}
-{u'error': {u'class': u'GenericError', u'desc': u'The requested file size is too large'}}
-{'execute': 'block_resize', 'arguments': {'size': 9223372036854775808L, 'node_name': 'node1'}}
-{u'error': {u'class': u'GenericError', u'desc': u"Invalid parameter type for 'size', expected: integer"}}
-{'execute': 'block_resize', 'arguments': {'size': 18446744073709551104L, 'node_name': 'node1'}}
-{u'error': {u'class': u'GenericError', u'desc': u"Invalid parameter type for 'size', expected: integer"}}
-{'execute': 'block_resize', 'arguments': {'size': -9223372036854775808, 'node_name': 'node1'}}
-{u'error': {u'class': u'GenericError', u'desc': u"Parameter 'size' expects a >0 size"}}
+{"execute": "block_resize", "arguments": {"node_name": "node1", "size": 9223372036854775296}}
+{"error": {"class": "GenericError", "desc": "The requested file size is too large"}}
+{"execute": "block_resize", "arguments": {"node_name": "node1", "size": 9223372036854775808}}
+{"error": {"class": "GenericError", "desc": "Invalid parameter type for 'size', expected: integer"}}
+{"execute": "block_resize", "arguments": {"node_name": "node1", "size": 18446744073709551104}}
+{"error": {"class": "GenericError", "desc": "Invalid parameter type for 'size', expected: integer"}}
+{"execute": "block_resize", "arguments": {"node_name": "node1", "size": -9223372036854775808}}
+{"error": {"class": "GenericError", "desc": "Parameter 'size' expects a >0 size"}}
 image: json:{"driver": "IMGFMT", "file": {"driver": "file", "filename": "TEST_IMG"}, "key-secret": "keysec0"}
 file format: IMGFMT
 virtual size: 0 (0 bytes)
diff --git a/tests/qemu-iotests/211.out b/tests/qemu-iotests/211.out
index 6feaea3..eebb0ea 100644
--- a/tests/qemu-iotests/211.out
+++ b/tests/qemu-iotests/211.out
@@ -1,16 +1,16 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
-
-{'execute': 'blockdev-add', 'arguments': {'node_name': 'imgfile', 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}}
-{u'return': {}}
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'imgfile', 'size': 134217728}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
+
+{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "node_name": "imgfile"}}
+{"return": {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "imgfile", "size": 134217728}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -21,15 +21,15 @@ cluster_size: 1048576
 
 === Successful image creation (explicit defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'preallocation': 'off', 'driver': 'vdi', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}, 'size': 67108864}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi"}, "preallocation": "off", "size": 67108864}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -40,15 +40,15 @@ cluster_size: 1048576
 
 === Successful image creation (with non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'preallocation': 'metadata', 'driver': 'vdi', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.vdi'}, 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vdi"}, "preallocation": "metadata", "size": 33554432}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -60,18 +60,18 @@ cluster_size: 1048576
 
 === Invalid BlockdevRef ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': "this doesn't exist", 'size': 33554432}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "this doesn't exist", "size": 33554432}}}
+{"return": {}}
 Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Zero size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'node0', 'size': 0}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -80,10 +80,10 @@ cluster_size: 1048576
 
 === Maximum size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'node0', 'size': 562949819203584}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 562949819203584}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -92,21 +92,21 @@ cluster_size: 1048576
 
 === Invalid sizes ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'node0', 'size': 18446744073709551104L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 18446744073709551104}}}
+{"return": {}}
 Job failed: Unsupported VDI image size (size is 0xfffffffffffffe00, max supported is 0x1fffff8000000)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'node0', 'size': 9223372036854775808L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 9223372036854775808}}}
+{"return": {}}
 Job failed: Unsupported VDI image size (size is 0x8000000000000000, max supported is 0x1fffff8000000)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vdi', 'file': 'node0', 'size': 562949819203585}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vdi", "file": "node0", "size": 562949819203585}}}
+{"return": {}}
 Job failed: Unsupported VDI image size (size is 0x1fffff8000001, max supported is 0x1fffff8000000)
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
diff --git a/tests/qemu-iotests/212.out b/tests/qemu-iotests/212.out
index 9150da7..01da467 100644
--- a/tests/qemu-iotests/212.out
+++ b/tests/qemu-iotests/212.out
@@ -1,16 +1,16 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
-
-{'execute': 'blockdev-add', 'arguments': {'node_name': 'imgfile', 'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}}
-{u'return': {}}
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'imgfile', 'size': 134217728}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
+
+{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels", "node_name": "imgfile"}}
+{"return": {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "imgfile", "size": 134217728}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -18,15 +18,15 @@ virtual size: 128M (134217728 bytes)
 
 === Successful image creation (explicit defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 1048576, 'driver': 'parallels', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}, 'size': 67108864}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 1048576, "driver": "parallels", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels"}, "size": 67108864}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -34,15 +34,15 @@ virtual size: 64M (67108864 bytes)
 
 === Successful image creation (with non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 65536, 'driver': 'parallels', 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.parallels'}, 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 65536, "driver": "parallels", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.parallels"}, "size": 33554432}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -50,18 +50,18 @@ virtual size: 32M (33554432 bytes)
 
 === Invalid BlockdevRef ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': "this doesn't exist", 'size': 33554432}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "this doesn't exist", "size": 33554432}}}
+{"return": {}}
 Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Zero size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 0}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -69,10 +69,10 @@ virtual size: 0 (0 bytes)
 
 === Maximum size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 4503599627369984}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 4503599627369984}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -80,77 +80,77 @@ virtual size: 4096T (4503599627369984 bytes)
 
 === Invalid sizes ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 1234}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 1234}}}
+{"return": {}}
 Job failed: Image size must be a multiple of 512 bytes
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 18446744073709551104L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 18446744073709551104}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 9223372036854775808L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 9223372036854775808}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 9223372036854775296}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 9223372036854775296}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'parallels', 'file': 'node0', 'size': 4503599627370497}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "parallels", "file": "node0", "size": 4503599627370497}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid cluster size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 1234, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 1234, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a multiple of 512 bytes
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 128, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 128, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size must be a multiple of 512 bytes
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 4294967296, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 4294967296, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 9223372036854775808L, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 9223372036854775808, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 18446744073709551104L, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 18446744073709551104, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Cluster size is too large
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 0, 'driver': 'parallels', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 0, "driver": "parallels", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'cluster-size': 512, 'driver': 'parallels', 'file': 'node0', 'size': 281474976710656}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"cluster-size": 512, "driver": "parallels", "file": "node0", "size": 281474976710656}}}
+{"return": {}}
 Job failed: Image size is too large for this cluster size
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
diff --git a/tests/qemu-iotests/213.out b/tests/qemu-iotests/213.out
index e1dcd47..0c9d65b 100644
--- a/tests/qemu-iotests/213.out
+++ b/tests/qemu-iotests/213.out
@@ -1,16 +1,16 @@
 === Successful image creation (defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
-
-{'execute': 'blockdev-add', 'arguments': {'node_name': 'imgfile', 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}}
-{u'return': {}}
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'imgfile', 'size': 134217728}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
+
+{"execute": "blockdev-add", "arguments": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx", "node_name": "imgfile"}}
+{"return": {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "imgfile", "size": 134217728}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -19,15 +19,15 @@ cluster_size: 8388608
 
 === Successful image creation (explicit defaults) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'block-size': 8388608, 'driver': 'vhdx', 'subformat': 'dynamic', 'log-size': 1048576, 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}, 'block-state-zero': True, 'size': 67108864}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 8388608, "block-state-zero": true, "driver": "vhdx", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx"}, "log-size": 1048576, "size": 67108864, "subformat": "dynamic"}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -36,15 +36,15 @@ cluster_size: 8388608
 
 === Successful image creation (with non-default options) ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'size': 0, 'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'block-size': 268435456, 'driver': 'vhdx', 'subformat': 'fixed', 'log-size': 8388608, 'file': {'driver': 'file', 'filename': 'TEST_DIR/PID-t.vhdx'}, 'block-state-zero': False, 'size': 33554432}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 268435456, "block-state-zero": false, "driver": "vhdx", "file": {"driver": "file", "filename": "TEST_DIR/PID-t.vhdx"}, "log-size": 8388608, "size": 33554432, "subformat": "fixed"}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -53,18 +53,18 @@ cluster_size: 268435456
 
 === Invalid BlockdevRef ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': "this doesn't exist", 'size': 33554432}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "this doesn't exist", "size": 33554432}}}
+{"return": {}}
 Job failed: Cannot find device=this doesn't exist nor node_name=this doesn't exist
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Zero size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 0}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 0}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -73,10 +73,10 @@ cluster_size: 8388608
 
 === Maximum size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 70368744177664}}}
-{u'return': {}}
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 70368744177664}}}
+{"return": {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 image: TEST_IMG
 file format: IMGFMT
@@ -85,85 +85,85 @@ cluster_size: 67108864
 
 === Invalid sizes ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 18446744073709551104L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 18446744073709551104}}}
+{"return": {}}
 Job failed: Image size too large; max of 64TB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 9223372036854775808L}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 9223372036854775808}}}
+{"return": {}}
 Job failed: Image size too large; max of 64TB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 9223372036854775296}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 9223372036854775296}}}
+{"return": {}}
 Job failed: Image size too large; max of 64TB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'file': 'node0', 'size': 70368744177665}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "size": 70368744177665}}}
+{"return": {}}
 Job failed: Image size too large; max of 64TB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid block size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'block-size': 1234567, 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 1234567, "driver": "vhdx", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Block size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'block-size': 128, 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 128, "driver": "vhdx", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Block size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'block-size': 3145728, 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 3145728, "driver": "vhdx", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Block size must be a power of two
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'block-size': 536870912, 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 536870912, "driver": "vhdx", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Block size must not exceed 268435456
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'driver': 'vhdx', 'block-size': 0, 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"block-size": 0, "driver": "vhdx", "file": "node0", "size": 67108864}}}
+{"return": {}}
 Job failed: Block size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
 === Invalid log size ===
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'log-size': 1234567, 'driver': 'vhdx', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "log-size": 1234567, "size": 67108864}}}
+{"return": {}}
 Job failed: Log size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'log-size': 128, 'driver': 'vhdx', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "log-size": 128, "size": 67108864}}}
+{"return": {}}
 Job failed: Log size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'log-size': 4294967296, 'driver': 'vhdx', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "log-size": 4294967296, "size": 67108864}}}
+{"return": {}}
 Job failed: Log size must be smaller than 4 GB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
-{'execute': 'blockdev-create', 'arguments': {'job_id': 'job0', 'options': {'log-size': 0, 'driver': 'vhdx', 'file': 'node0', 'size': 67108864}}}
-{u'return': {}}
+{"execute": "blockdev-create", "arguments": {"job_id": "job0", "options": {"driver": "vhdx", "file": "node0", "log-size": 0, "size": 67108864}}}
+{"return": {}}
 Job failed: Log size must be a multiple of 1 MB
-{'execute': 'job-dismiss', 'arguments': {'id': 'job0'}}
-{u'return': {}}
+{"execute": "job-dismiss", "arguments": {"id": "job0"}}
+{"return": {}}
 
diff --git a/tests/qemu-iotests/216.out b/tests/qemu-iotests/216.out
index 45ea857..a70aa5c 100644
--- a/tests/qemu-iotests/216.out
+++ b/tests/qemu-iotests/216.out
@@ -7,8 +7,8 @@ Done
 
 --- Doing COR ---
 
-{u'return': {}}
-{u'return': u''}
+{"return": {}}
+{"return": ""}
 
 --- Checking COR result ---
 
diff --git a/tests/qemu-iotests/218.out b/tests/qemu-iotests/218.out
index 7dbf78e..825a657 100644
--- a/tests/qemu-iotests/218.out
+++ b/tests/qemu-iotests/218.out
@@ -4,27 +4,27 @@
 --- force=false ---
 
 Cancelling job
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 65536, u'len': 1048576, u'offset': 65536}, u'event': u'BLOCK_JOB_CANCELLED'}
+{"return": {}}
+{"data": {"device": "mirror", "len": 1048576, "offset": 65536, "speed": 65536, "type": "mirror"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 --- force=true ---
 
 Cancelling job
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 65536, u'len': 1048576, u'offset': 65536}, u'event': u'BLOCK_JOB_CANCELLED'}
+{"return": {}}
+{"data": {"device": "mirror", "len": 1048576, "offset": 65536, "speed": 65536, "type": "mirror"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 === Cancel mirror job after convergence ===
 
 --- force=false ---
 
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 0, u'len': 1048576, u'offset': 1048576}, u'event': u'BLOCK_JOB_READY'}
+{"data": {"device": "mirror", "len": 1048576, "offset": 1048576, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_READY", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 Cancelling job
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 0, u'len': 1048576, u'offset': 1048576}, u'event': u'BLOCK_JOB_COMPLETED'}
+{"return": {}}
+{"data": {"device": "mirror", "len": 1048576, "offset": 1048576, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 --- force=true ---
 
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 0, u'len': 1048576, u'offset': 1048576}, u'event': u'BLOCK_JOB_READY'}
+{"data": {"device": "mirror", "len": 1048576, "offset": 1048576, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_READY", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 Cancelling job
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'mirror', u'type': u'mirror', u'speed': 0, u'len': 1048576, u'offset': 1048576}, u'event': u'BLOCK_JOB_CANCELLED'}
+{"return": {}}
+{"data": {"device": "mirror", "len": 1048576, "offset": 1048576, "speed": 0, "type": "mirror"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
diff --git a/tests/qemu-iotests/219.out b/tests/qemu-iotests/219.out
index 6dc07bc..8ebd3fe 100644
--- a/tests/qemu-iotests/219.out
+++ b/tests/qemu-iotests/219.out
@@ -2,326 +2,326 @@ Launching VM...
 
 
 Starting block job: drive-mirror (auto-finalize: True; auto-dismiss: True)
-{u'return': {}}
-{u'return': [{u'status': u'running', u'current-progress': 'FILTERED', u'total-progress': 'FILTERED', u'id': u'job0', u'type': u'mirror'}]}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'created', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
+{"return": {}}
+{"return": [{"current-progress": "FILTERED", "id": "job0", "status": "running", "total-progress": "FILTERED", "type": "mirror"}]}
+{"data": {"id": "job0", "status": "created"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 Pause/resume in RUNNING
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 65536, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 65536, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "running", "total-progress": 4194304, "type": "mirror"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "running", "total-progress": 4194304, "type": "mirror"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "running", "total-progress": 4194304, "type": "mirror"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 327680, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 327680, "id": "job0", "status": "running", "total-progress": 4194304, "type": "mirror"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for READY state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'ready', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'ready', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"data": {"id": "job0", "status": "ready"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "ready", "total-progress": 4194304, "type": "mirror"}]}
 
 Pause/resume in READY
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'standby', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'standby', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'ready', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'ready', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "standby"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "standby", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "ready"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "ready", "total-progress": 4194304, "type": "mirror"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'standby', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'standby', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'ready', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'ready', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "standby"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "standby", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "ready"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "ready", "total-progress": 4194304, "type": "mirror"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'standby', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'standby', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'ready', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'ready', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "standby"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "standby", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "ready"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "ready", "total-progress": 4194304, "type": "mirror"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'standby', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'standby', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'ready', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'ready', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'mirror'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'ready' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'ready' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'ready' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'ready' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "standby"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "standby", "total-progress": 4194304, "type": "mirror"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "ready"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "ready", "total-progress": 4194304, "type": "mirror"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'ready' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'ready' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'ready' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'ready' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for PENDING state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'waiting', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'pending', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'concluded', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'null', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': []}
+{"data": {"id": "job0", "status": "waiting"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "pending"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "concluded"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "null"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": []}
 
 
 Starting block job: drive-backup (auto-finalize: True; auto-dismiss: True)
-{u'return': {}}
-{u'return': [{u'status': u'running', u'current-progress': 'FILTERED', u'total-progress': 'FILTERED', u'id': u'job0', u'type': u'backup'}]}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'created', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
+{"return": {}}
+{"return": [{"current-progress": "FILTERED", "id": "job0", "status": "running", "total-progress": "FILTERED", "type": "backup"}]}
+{"data": {"id": "job0", "status": "created"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 Pause/resume in RUNNING
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 65536, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 65536, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 327680, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 327680, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for PENDING state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'waiting', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'pending', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'concluded', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'null', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': []}
+{"data": {"id": "job0", "status": "waiting"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "pending"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "concluded"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "null"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": []}
 
 
 Starting block job: drive-backup (auto-finalize: True; auto-dismiss: False)
-{u'return': {}}
-{u'return': [{u'status': u'running', u'current-progress': 'FILTERED', u'total-progress': 'FILTERED', u'id': u'job0', u'type': u'backup'}]}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'created', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
+{"return": {}}
+{"return": [{"current-progress": "FILTERED", "id": "job0", "status": "running", "total-progress": "FILTERED", "type": "backup"}]}
+{"data": {"id": "job0", "status": "created"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 Pause/resume in RUNNING
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 65536, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 65536, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 327680, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 327680, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for PENDING state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'waiting', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'pending', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'concluded', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'concluded', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'null', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': []}
+{"data": {"id": "job0", "status": "waiting"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "pending"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "concluded"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "concluded", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
+{"return": {}}
+{"data": {"id": "job0", "status": "null"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": []}
 
 
 Starting block job: drive-backup (auto-finalize: False; auto-dismiss: True)
-{u'return': {}}
-{u'return': [{u'status': u'running', u'current-progress': 'FILTERED', u'total-progress': 'FILTERED', u'id': u'job0', u'type': u'backup'}]}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'created', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
+{"return": {}}
+{"return": [{"current-progress": "FILTERED", "id": "job0", "status": "running", "total-progress": "FILTERED", "type": "backup"}]}
+{"data": {"id": "job0", "status": "created"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 Pause/resume in RUNNING
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 65536, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 65536, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 327680, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 327680, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for PENDING state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'waiting', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'pending', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'pending', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'concluded', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'null', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': []}
+{"data": {"id": "job0", "status": "waiting"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "pending"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "pending", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
+{"return": {}}
+{"data": {"id": "job0", "status": "concluded"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "null"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": []}
 
 
 Starting block job: drive-backup (auto-finalize: False; auto-dismiss: False)
-{u'return': {}}
-{u'return': [{u'status': u'running', u'current-progress': 'FILTERED', u'total-progress': 'FILTERED', u'id': u'job0', u'type': u'backup'}]}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'created', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
+{"return": {}}
+{"return": [{"current-progress": "FILTERED", "id": "job0", "status": "running", "total-progress": "FILTERED", "type": "backup"}]}
+{"data": {"id": "job0", "status": "created"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
 
 Pause/resume in RUNNING
 === Testing block-job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 65536, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 65536, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing block-job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 131072, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 131072, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/block-job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 196608, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 196608, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
 === Testing job-pause/job-resume ===
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'paused', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'paused', u'current-progress': 262144, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'running', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'running', u'current-progress': 327680, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
+{"return": {}}
+{"data": {"id": "job0", "status": "paused"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 262144, "id": "job0", "status": "paused", "total-progress": 4194304, "type": "backup"}]}
+{"return": {}}
+{"data": {"id": "job0", "status": "running"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 327680, "id": "job0", "status": "running", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'running' cannot accept command verb 'dismiss'"}}
+{"return": {}}
 
 Waiting for PENDING state...
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'waiting', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'pending', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'pending', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'concluded', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': [{u'status': u'concluded', u'current-progress': 4194304, u'total-progress': 4194304, u'id': u'job0', u'type': u'backup'}]}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
-{u'error': {u'class': u'GenericError', u'desc': u"Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'status': u'null', u'id': u'job0'}, u'event': u'JOB_STATUS_CHANGE'}
-{u'return': []}
+{"data": {"id": "job0", "status": "waiting"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"data": {"id": "job0", "status": "pending"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "pending", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'pending' cannot accept command verb 'dismiss'"}}
+{"return": {}}
+{"data": {"id": "job0", "status": "concluded"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": [{"current-progress": 4194304, "id": "job0", "status": "concluded", "total-progress": 4194304, "type": "backup"}]}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'pause'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'complete'"}}
+{"error": {"class": "GenericError", "desc": "Job 'job0' in state 'concluded' cannot accept command verb 'finalize'"}}
+{"return": {}}
+{"data": {"id": "job0", "status": "null"}, "event": "JOB_STATUS_CHANGE", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": []}
diff --git a/tests/qemu-iotests/222.out b/tests/qemu-iotests/222.out
index 48f336a..16643dd 100644
--- a/tests/qemu-iotests/222.out
+++ b/tests/qemu-iotests/222.out
@@ -8,13 +8,13 @@ Done
 
 --- Setting up Fleecing Graph ---
 
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 
 --- Setting up NBD Export ---
 
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"return": {}}
 
 --- Sanity Check ---
 
@@ -29,13 +29,13 @@ read -P0 0x3fe0000 64k
 --- Testing COW ---
 
 write -P0xab 0 64k
-{u'return': u''}
+{"return": ""}
 write -P0xad 0x00f8000 64k
-{u'return': u''}
+{"return": ""}
 write -P0x1d 0x2008000 64k
-{u'return': u''}
+{"return": ""}
 write -P0xea 0x3fe0000 64k
-{u'return': u''}
+{"return": ""}
 
 --- Verifying Data ---
 
@@ -49,10 +49,10 @@ read -P0 0x3fe0000 64k
 
 --- Cleanup ---
 
-{u'return': {}}
-{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'drive0', u'type': u'backup', u'speed': 0, u'len': 67108864, u'offset': 393216}, u'event': u'BLOCK_JOB_CANCELLED'}
-{u'return': {}}
-{u'return': {}}
+{"return": {}}
+{"data": {"device": "drive0", "len": 67108864, "offset": 393216, "speed": 0, "type": "backup"}, "event": "BLOCK_JOB_CANCELLED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
+{"return": {}}
+{"return": {}}
 
 --- Confirming writes ---
 
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index a0f35e4..27bb2b6 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -254,7 +254,10 @@ def filter_img_info(output, filename):
 def log(msg, filters=[]):
     for flt in filters:
         msg = flt(msg)
-    print(msg)
+    if type(msg) is dict or type(msg) is list:
+        print(json.dumps(msg, sort_keys=True))
+    else:
+        print(msg)
 
 class Timeout:
     def __init__(self, seconds, errmsg = "Timeout"):
@@ -442,10 +445,11 @@ class VM(qtest.QEMUQtestMachine):
         return result
 
     def qmp_log(self, cmd, filters=[filter_testfiles], **kwargs):
-        logmsg = "{'execute': '%s', 'arguments': %s}" % (cmd, kwargs)
+        logmsg = '{"execute": "%s", "arguments": %s}' % \
+            (cmd, json.dumps(kwargs, sort_keys=True))
         log(logmsg, filters)
         result = self.qmp(cmd, **kwargs)
-        log(str(result), filters)
+        log(json.dumps(result, sort_keys=True), filters)
         return result
 
     def run_job(self, job, auto_finalize=True, auto_dismiss=False):