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Re: [Qemu-devel] Qemu and Changed Block Tracking

From: Eric Blake
Subject: Re: [Qemu-devel] Qemu and Changed Block Tracking
Date: Tue, 21 Feb 2017 09:11:35 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0

On 02/21/2017 06:43 AM, Peter Lieven wrote:
> Hi,
> is there anyone ever thought about implementing something like VMware
> CBT in Qemu?
> https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1020128

Yes; in fact, the work on persistent dirty bitmaps and on NBD
BLOCK_STATUS reporting is what we envision as the building blocks for an
upper layer software to be able to grab CBT information on which blocks
are dirty.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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