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From: | 吴兴博 |
Subject: | Re: [Qemu-devel] disk image: self-organized format or raw file |
Date: | Tue, 12 Aug 2014 10:14:52 -0400 |
On 08/12/2014 07:45 AM, 吴兴博 wrote:
[please don't top-post on technical lists]
> Thanks for your information. It's really helpful.Umm, how do you propose to add a bitmap within a raw file? The moment
> I think adding a bitmap alongside the raw file ( or just within that file)
the file contains metadata, it is no longer raw, but some other format.
You'd need a way to reliably delineate the portion of the file that
contains the bitmap and therefore must not be exposed to the guest.
> would be suffice to distinguish between present or in backing file.Care to give a pointer to a URL describing the FVD format?
> The idea in FVD looks similar to 'addcow'---use bitmap but delegating
> allocation to FS. However FVD seems to have been ignored by community.
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