Re: [Qemu-devel] [PATCH V14 0/6] enhancement for qmp/hmp interfaces of block info

[Wenchao Xia <xiawenc@linux.vnet.ibm.com>]

于 2013-6-3 11:14, Wenchao Xia 写道:
>    This series lets qmp interface show delaied info, including internal snapshot
> /backing chain on all block device at runtime, which helps management stack and
> human user, by retrieving exactly the same info of what qemu sees.
> 
> Example:
> -> { "execute": "query-block" }
> <- {
>        "return":[
>           {
>              "io-status": "ok",
>              "device":"ide0-hd0",
>              "locked":false,
>              "removable":false,
>              "inserted":{
>                 "ro":false,
>                 "drv":"qcow2",
>                 "encrypted":false,
>                 "file":"disks/test.qcow2",
>                 "backing_file_depth":1,
>                 "bps":1000000,
>                 "bps_rd":0,
>                 "bps_wr":0,
>                 "iops":1000000,
>                 "iops_rd":0,
>                 "iops_wr":0,
>                 "image":{
>                    "filename":"disks/test.qcow2",
>                    "format":"qcow2",
>                    "virtual-size":2048000,
>                    "backing_file":"base.qcow2",
>                    "full-backing-filename":"disks/base.qcow2",
>                    "backing-filename-format:"qcow2",
>                    "snapshots":[
>                       {
>                          "id": "1",
>                          "name": "snapshot1",
>                          "vm-state-size": 0,
>                          "date-sec": 10000200,
>                          "date-nsec": 12,
>                          "vm-clock-sec": 206,
>                          "vm-clock-nsec": 30
>                       }
>                    ],
>                    "backing-image":{
>                        "filename":"disks/base.qcow2",
>                        "format":"qcow2",
>                        "virtual-size":2048000
>                    }
>                 }
>              },
>              "type":"unknown"
>           },
>           {
>              "io-status": "ok",
>              "device":"ide1-cd0",
>              "locked":false,
>              "removable":true,
>              "type":"unknown"
>           },
>           {
>              "device":"floppy0",
>              "locked":false,
>              "removable":true,
>              "type":"unknown"
>           },
>           {
>              "device":"sd0",
>              "locked":false,
>              "removable":true,
>              "type":"unknown"
>           }
>        ]
>     }
> 
>    These patches follows the rule that use qmp to retrieve information,
> hmp layer just does a translation from qmp object it got. To make code
> graceful, snapshot and image info retrieving code in qemu and qemu-img are
> merged into block layer, and some function names were adjusted to describe
> them better. For the part touched by the series, it works as:
> 
>     qemu          qemu-img
> 
> dump_monitor    dump_stdout
>       |--------------|
>              |
>         block/qapi.c
> 
>    This series requires following series applied:
> "[PATCH V3 0/4] qapi and snapshot code clean up in block layer",
> https://lists.gnu.org/archive/html/qemu-devel/2013-05/msg03539.html
> 
>    Special thanks for Markus, Stefan, Kevin, Eric reviewing many times.
> 
> v14:
>    Address Eric's comments:
>    2/6: better comments in code.
>    3/6: spelling fix in comments.
> 
> Wenchao Xia (6):
>    1 block: add snapshot info query function bdrv_query_snapshot_info_list()
>    2 block: add image info query function bdrv_query_image_info()
>    3 qmp: add recursive member in ImageInfo
>    4 qmp: add ImageInfo in BlockDeviceInfo used by query-block
>    5 hmp: show ImageInfo in 'info block'
>    6 hmp: add parameters device and -v for info block
> 
>   block/qapi.c         |  148 ++++++++++++++++++++++++++++++++++++++++++--------
>   hmp.c                |   21 +++++++
>   include/block/qapi.h |   14 +++--
>   monitor.c            |    7 ++-
>   qapi-schema.json     |   10 +++-
>   qemu-img.c           |   10 +++-
>   qmp-commands.hx      |   69 +++++++++++++++++++++++-
>   7 files changed, 242 insertions(+), 37 deletions(-)
> 
> 
> 
  Since Stefan have given comments on V13, pls ignore this version,
I'll respin V15.

-- 
Best Regards

Wenchao Xia