Test 1
{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": false}}
{"return": {}}
wrote 262144/262144 bytes at offset 0
256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-img info dump:
image: TEST_IMG
file format: IMGFMT
virtual size: 1 MiB (1048576 bytes)
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
refcount bits: 16
corrupt: false
extended l2: false
No bitmap in JSON format output
Test 2
{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": true, "granularity": 32768, "name": "bitmap-1", "node": "drive0", "persistent": true}}
{"return": {}}
wrote 262144/262144 bytes at offset 262144
256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-img info dump:
image: TEST_IMG
file format: IMGFMT
virtual size: 1 MiB (1048576 bytes)
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
bitmaps:
[0]:
flags:
name: bitmap-1
granularity: 32768
refcount bits: 16
corrupt: false
extended l2: false
The same bitmaps in JSON format:
[
{
"flags": [],
"granularity": 32768,
"name": "bitmap-1"
}
]
Test 3
{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 65536, "name": "bitmap-2", "node": "drive0", "persistent": true}}
{"return": {}}
wrote 262144/262144 bytes at offset 524288
256 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
qemu-img info dump:
image: TEST_IMG
file format: IMGFMT
virtual size: 1 MiB (1048576 bytes)
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
bitmaps:
[0]:
flags:
name: bitmap-1
granularity: 32768
[1]:
flags:
[0]: auto
name: bitmap-2
granularity: 65536
refcount bits: 16
corrupt: false
extended l2: false
The same bitmaps in JSON format:
[
{
"flags": [],
"granularity": 32768,
"name": "bitmap-1"
},
{
"flags": [
"auto"
],
"granularity": 65536,
"name": "bitmap-2"
}
]
Test 4
Checking "in-use" flag...
qemu-img info dump:
image: TEST_IMG
file format: IMGFMT
virtual size: 1 MiB (1048576 bytes)
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
bitmaps:
[0]:
flags:
[0]: in-use
name: bitmap-1
granularity: 32768
[1]:
flags:
[0]: in-use
[1]: auto
name: bitmap-2
granularity: 65536
refcount bits: 16
corrupt: false
extended l2: false
The same bitmaps in JSON format:
[
{
"flags": [
"in-use"
],
"granularity": 32768,
"name": "bitmap-1"
},
{
"flags": [
"in-use",
"auto"
],
"granularity": 65536,
"name": "bitmap-2"
}
]
Test 5
{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 16384, "name": "bitmap-0", "node": "drive0", "persistent": true}}
{"return": {}}
Write an unknown bitmap flag '0x4' into a new QCOW2 image at offset 327695
qemu-img: Could not open 'TEST_IMG': Bitmap 'bitmap-0' doesn't satisfy the constraints
Unset the unknown bitmap flag '0x4' in the bitmap directory entry:
image: TEST_IMG
file format: IMGFMT
virtual size: 1 MiB (1048576 bytes)
cluster_size: 65536
Format specific information:
compat: 1.1
compression type: zlib
lazy refcounts: false
bitmaps:
[0]:
flags:
[0]: auto
name: bitmap-0
granularity: 16384
refcount bits: 16
corrupt: false
extended l2: false
Test complete
