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From: | Wolfgang Richter |
Subject: | Re: [Qemu-devel] [RFC] block-trace Low Level Command Supporting Disk Introspection |
Date: | Tue, 14 May 2013 11:48:53 -0400 |
Il 14/05/2013 10:50, Kevin Wolf ha scritto:
> Or, to translate it into our existing terminology, drive-mirrorRight, I'm waiting for Stefan's block-backup to give me the "right"
> implements a passive mirror, you're proposing an active one (which we
> do want to have).
>
> With an active mirror, we'll want to have another choice: The mirror can
> be synchronous (guest writes only complete after the mirrored write has
> completed) or asynchronous (completion is based only on the original
> image). It should be easy enough to support both once an active mirror
> exists.
hooks for the active mirror.
The bulk phase will always be passive, but an active-asynchronous mirror
has some interesting properties and it makes sense to implement it.
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