Re: [Qemu-devel] [PATCH V5 2/4] block: Use bdrv_get_backing_file_depth()

[Luiz Capitulino <lcapitulino@redhat.com>]

On Thu, 26 Jul 2012 15:18:19 +0200
benoit.canet@gmail.com wrote:

> From: Benoît Canet <benoit@irqsave.net>
> 
> Use the dedicated counting function in qmp_query_block in order to
> propagate the backing file depth to HMP.
> 
> Signed-off-by: Benoit Canet <benoit@irqsave.net>
> ---
>  block.c          |    3 +++
>  qapi-schema.json |    9 ++++++---
>  2 files changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/block.c b/block.c
> index 22ebe49..a6fba1d 100644
> --- a/block.c
> +++ b/block.c
> @@ -2450,6 +2450,9 @@ BlockInfoList *qmp_query_block(Error **errp)
>                  info->value->inserted->backing_file = g_strdup(bs->backing_file);
>              }
>  
> +            info->value->inserted->backing_file_depth =
> +                bdrv_get_backing_file_depth(bs);
> +
>              if (bs->io_limits_enabled) {
>                  info->value->inserted->bps =
>                                 bs->io_limits.bps[BLOCK_IO_LIMIT_TOTAL];
> diff --git a/qapi-schema.json b/qapi-schema.json
> index a92adb1..2b50f22 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -398,6 +398,8 @@
>  #
>  # @backing_file: #optional the name of the backing file (for copy-on-write)
>  #
> +# @backing_file_depth: number of files in the backing file chain (since: 1.2)
> +#
>  # @encrypted: true if the backing device is encrypted
>  #
>  # @bps: total throughput limit in bytes per second is specified
> @@ -418,9 +420,10 @@
>  ##
>  { 'type': 'BlockDeviceInfo',
>    'data': { 'file': 'str', 'ro': 'bool', 'drv': 'str',
> -            '*backing_file': 'str', 'encrypted': 'bool',
> -            'bps': 'int', 'bps_rd': 'int', 'bps_wr': 'int',
> -            'iops': 'int', 'iops_rd': 'int', 'iops_wr': 'int'} }
> +            '*backing_file': 'str', 'backing-file-depth': 'int',

Should use underscores, ie. should be backing_file_depth.

Also, the next patch and this can be squashed together.

Otherwise series looks good to me now.


> +            'encrypted': 'bool', 'bps': 'int', 'bps_rd': 'int',
> +            'bps_wr': 'int', 'iops': 'int', 'iops_rd': 'int',
> +            'iops_wr': 'int'} }
>  
>  ##
>  # @BlockDeviceIoStatus: