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Re: [Qemu-devel] [RFC] lively write vmstate with predictable size
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From: |
Juan Quintela |
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Subject: |
Re: [Qemu-devel] [RFC] lively write vmstate with predictable size |
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Date: |
Fri, 04 Jan 2013 23:42:06 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) |
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.