Re: [libvirt] [PATCH 5/8] latency: Update monitor functions for new latency fields

[Daniel Veillard <veillard redhat com>]

On Wed, Aug 31, 2011 at 04:26:10PM +0800, Osier Yang wrote:
> The mainly changes are:
> 
> 1) Update qemuMonitorGetBlockStatsInfo and it's children (Text/JSON)
>    functions to return the value of new latency fields.
> 2) Add new function qemuMonitorGetBlockStatsParamsNumber, which is
>    to count how many parameters the underlying QEMU supports.
> 3) Update virDomainBlockStats in src/qemu/qemu_driver.c to be
>    compatible with the changes by 1).

  I'm not sure we should extend the existing set of function
used by GetBlockStats instead of creating new functions asking/looking
for the full set of values. On one hand it's good to share the code,
but on the other hand if this leads to more round-trip between
libvirtd and qemu I would rather keep them separate. I.e. we should
pay the extra cost only when asking for the extra data.

Daniel

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