[Top][All Lists]

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

Re: [Qemu-block] COLO: how to flip a secondary to a primary?

From: Li Zhijian
Subject: Re: [Qemu-block] COLO: how to flip a secondary to a primary?
Date: Mon, 25 Jan 2016 10:11:13 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0

On 01/25/2016 09:32 AM, Wen Congyang wrote:
>    f) I've not thought about the colo-proxy that much yet - I guess that
>       existing connections need to keep their sequence number offset but

Strictly speaking, after failover, we only need to keep servicing for the tcp 
connections which are
established after the last checkpoint but not all existing connections. Because 
after a checkpoint
(primary and secondary node works well), primary vm and secondary vm is same, 
that means the existing
tcp connection has the same sequence。

>       new connections made by what is now the primary dont need to do anything
>       special.
Yes, you are right.

Hailiang or Zhijian can answer this question.

Li Zhijian

reply via email to

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