Re: [PATCH v3 6/6] iotests: Dump QCOW2 image metadata in JSON format with qcow2.py

[Eric Blake]

On 6/1/20 8:48 AM, Andrey Shinkevich wrote:
> Represent QCOW2 metadata dumping with qcow2.py script in JSON format
>
> {
>      "QCOW2_header_extensions": [
>          {
>              "Header_extension": "Feature table",
>              "magic": "0x6803f857",
>              "length": 192,
>              "data_str": "<binary>"
>          },
>          {
>              "Header_extension": "Bitmaps",
>              "magic": "0x23852875",
>              "length": 24,
>              "data": {
>                  "nb_bitmaps": 2,
>                  "reserved32": 0,

Lengthy, but for a debug tool that's sometimes what you need.

> Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
> ---
>   tests/qemu-iotests/qcow2.py | 108 ++++++++++++++++++++++++++++++++++++++++++--
>   1 file changed, 105 insertions(+), 3 deletions(-)

My python is not the strongest, but nothing jumped out at me, and the 
end results look good.

Reviewed-by: Eric Blake <eblake@redhat.com>

--
Eric Blake, Principal Software Engineer
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