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Re: [Qemu-devel] [RFC] lively write vmstate with predictable size
From: |
Wenchao Xia |
Subject: |
Re: [Qemu-devel] [RFC] lively write vmstate with predictable size |
Date: |
Sat, 05 Jan 2013 16:21:14 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20121026 Thunderbird/16.0.2 |
δΊ 2013-1-5 6:42, Juan Quintela ει:
> Stefan Hajnoczi <address@hidden> wrote:
>> On Fri, Dec 21, 2012 at 10:25:51AM +0800, Wenchao Xia wrote:
>>> resent the mail to mail-list.
>>> -------------------
>>>
>>> Hi, Paolo and Juan
>>> Currently savevm needs pause vm, and I am working on that make it
>>> lively.
>>
>> What is the benefit over migrating to file? I thought we can already do
>> that today?
>
> Load is faster.
>
> He wants to "overwrite" the memory, so, if we dirty one page during
> migration, it overwrite it, instead of having two copies that only make
> the image bigger and slower to load. Problem is that we need a new
> "format" to be able to do that.
>
> Later, Juan.
>
I guess migration to file makes vm stopped, and lack a step
to take snapshot in the end of migration, also the usage seems
strange makes me feel something is lacking. I'd like to
have:
1 take blk snapshot internal/external lively.
2 take vmstate snapshot internal/external lively.
3 combination.
--
Best Regards
Wenchao Xia