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Date: Fri, 24 Apr 2015 17:53:47 +0800
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Subject: Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's
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To: Paolo Bonzini <pbonzini@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Fam Zheng <famz@redhat.com>, Lai Jiangshan <laijs@cn.fujitsu.com>, qemu block <qemu-block@nongnu.org>, armbru@redhat.com, jcody@redhat.com, Jiang Yunhong <yunhong.jiang@intel.com>, Dong Eddie <eddie.dong@intel.com>, qemu devel <qemu-devel@nongnu.org>, Max Reitz <mreitz@redhat.com>, Gonglei <arei.gonglei@huawei.com>, Stefan Hajnoczi <stefanha@redhat.com>, Yang Hongyang <yanghy@cn.fujitsu.com>, zhanghailiang <zhang.zhanghailiang@huawei.com>

On 04/24/2015 05:36 PM, Paolo Bonzini wrote:
> 
> 
> On 24/04/2015 11:38, Wen Congyang wrote:
>>>>
>>>> That can be done with drive-mirror.  But I think it's too early for that.
>> Do you mean use drive-mirror instead of quorum?
> 
> Only before starting up a new secondary.  Basically you do a migration
> with non-shared storage, and then start the secondary in colo mode.
> 
> But it's only for the failover case.  Quorum (or a new block/colo.c
> driver or filter) is fine for normal colo operation.

Is nbd+colo needed to connect the NBD server later?

Thanks
Wen Congyang

> 
> Paolo
> .
>