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[Qemu-devel] Re: The State of the SaveVM format
From: |
Juan Quintela |
Subject: |
[Qemu-devel] Re: The State of the SaveVM format |
Date: |
Thu, 10 Sep 2009 14:55:07 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
"Michael S. Tsirkin" <address@hidden> wrote:
> On Wed, Sep 09, 2009 at 09:02:07PM -0500, Anthony Liguori wrote:
>>> If we complicate vmstate now to shoehorn pre-vmstate
>>> formats into vmstate, that ancient history will continue to haunt us.
>>> Complicating a program is far easier than the other direction.
>>>
>>
>> Let's take it one step at a time. There is an awful lot of areas where
>> we can support older versions without adding complications. Let's
>> approach the complicated ones one at a time.
>
> I'm not sure I understand this talk about "pre-vmstate formats".
> I thought vmstate patches were, at least for the most part, trying
> to reimplement existing format with the table-driver design?
>
> If that's not so and we are changing the format now, is it too late to
> consider some standard serialization format rather than rolling our own?
We are using previous format. At some point we should move to other
format. When/what is still not decided. Each time at its time. Once
we have everything using vmstate, we have a declarative description of
the state. Going for tables with names + types to any format is just an
exercise of walking the tables and writing a pretty-printer and a parser.
Later, Juan.
- Re: [Qemu-devel] The State of the SaveVM format, (continued)