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qemu-img: Add json output option to the info command.

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This option --output=[human|json] make qemu-img info output on
human or JSON representation at the choice of the user.

example:
{
    "snapshots": [
        {
            "vm-clock-nsec": 637102488,
            "name": "vm-20120821145509",
            "date-sec": 1345553709,
            "date-nsec": 220289000,
            "vm-clock-sec": 20,
            "id": "1",
            "vm-state-size": 96522745
        },
        {
            "vm-clock-nsec": 28210866,
            "name": "vm-20120821154059",
            "date-sec": 1345556459,
            "date-nsec": 171392000,
            "vm-clock-sec": 46,
            "id": "2",
            "vm-state-size": 101208714
        }
    ],
    "virtual-size": 1073741824,
    "filename": "snap.qcow2",
    "cluster-size": 65536,
    "format": "qcow2",
    "actual-size": 985587712,
    "dirty-flag": false
}

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Benoît Canet 2012-09-05 13:09:02 +02:00 • committed by Kevin Wolf
parent c249ee6825
commit c054b3fd78
4 changed files with 199 additions and 49 deletions
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4
qemu-img-cmds.hx
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@ -34,9 +34,9 @@ STEXI
ETEXI
DEF("info", img_info,
"info [-f fmt] filename")
"info [-f fmt] [--output=ofmt] filename")
STEXI
@item info [-f @var{fmt}] @var{filename}
@item info [-f @var{fmt}] [--output=@var{ofmt}] @var{filename}
ETEXI
DEF("snapshot", img_snapshot,