[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [RFC PATCH 01/14] docs: block replication's description

From: Wen Congyang
Subject: Re: [Qemu-devel] [RFC PATCH 01/14] docs: block replication's description
Date: Wed, 11 Mar 2015 15:01:01 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

On 03/11/2015 02:49 PM, Fam Zheng wrote:
> On Wed, 03/11 14:44, Wen Congyang wrote:
>> On 03/03/2015 03:59 PM, Fam Zheng wrote:
>>> On Tue, 03/03 15:53, Wen Congyang wrote:
>>>> I test qcow2_make_empty()'s performance. The result shows that it may
>>>> take about 100ms(normal sata disk). It is not acceptable for COLO. So
>>>> I think disk buff is necessary(just use it to replace qcow2).
>>> Why not tmpfs or ramdisk?
>> Another problem:
>> After failover, secondary write request will be written in (active disk)?
>> It is better to write request to (nbd target). Is there any feature can
>> be reused to implement it?
> You can use block commit or stream to move the data.

When doing failover, we can use it to move the data. After failover,
I need an endless job to move the data.

Wen Congyang

> Fam
> .

reply via email to

[Prev in Thread] Current Thread [Next in Thread]