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iotests: dump QCOW2 header in JSON in #303 

Extend the test case #303 by dumping QCOW2 image metadata in JSON
format.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1596742557-320265-12-git-send-email-andrey.shinkevich@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Andrey Shinkevich 2020-08-06 22:35:57 +03:00 committed by Eric Blake
parent 4edcca5741
commit 76bbbb2d8b
2 changed files with 79 additions and 0 deletions
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3
tests/qemu-iotests/303
View File

@ -58,3 +58,6 @@ add_bitmap(1, 0, 6, False)
add_bitmap(2, 6, 8, True)
dump = ['qcow2.py', disk, 'dump-header']
subprocess.run(dump)
# Dump the metadata in JSON format
dump.append('-j')
subprocess.run(dump)

76
tests/qemu-iotests/303.out
View File

@ -80,3 +80,79 @@ extra_data_size 0
Bitmap table type size offset
0 all-zeroes 0 0
{
"magic": 1363560955,
"version": 3,
"backing_file_offset": 0,
"backing_file_size": 0,
"cluster_bits": 16,
"size": 10485760,
"crypt_method": 0,
"l1_size": 1,
"l1_table_offset": 196608,
"refcount_table_offset": 65536,
"refcount_table_clusters": 1,
"nb_snapshots": 0,
"snapshot_offset": 0,
"incompatible_features": 0,
"compatible_features": 0,
"autoclear_features": 1,
"refcount_order": 4,
"header_length": 112
}
[
{
"name": "Feature table",
"magic": 1745090647,
"length": 336,
"data_str": "<binary>"
},
{
"name": "Bitmaps",
"magic": 595929205,
"length": 24,
"data": {
"nb_bitmaps": 2,
"reserved32": 0,
"bitmap_directory_size": 64,
"bitmap_directory_offset": 10289152,
"bitmap_directory": [
{
"name": "bitmap-1",
"bitmap_table_offset": 10158080,
"bitmap_table_size": 1,
"flags": 2,
"type": 1,
"granularity_bits": 15,
"name_size": 8,
"extra_data_size": 0,
"bitmap_table": [
{
"type": "serialized",
"offset": 10092544,
"reserved": 0
}
]
},
{
"name": "bitmap-2",
"bitmap_table_offset": 10223616,
"bitmap_table_size": 1,
"flags": 0,
"type": 1,
"granularity_bits": 16,
"name_size": 8,
"extra_data_size": 0,
"bitmap_table": [
{
"type": "all-zeroes",
"offset": 0,
"reserved": 0
}
]
}
]
}
}
]