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Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's descrip
From: |
Wen Congyang |
Subject: |
Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description |
Date: |
Fri, 24 Apr 2015 15:55:46 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 |
On 04/24/2015 03:47 PM, Paolo Bonzini wrote:
>
>
> On 24/04/2015 04:16, Wen Congyang wrote:
>>>>>> I think the primary shouldn't do any I/O after failover (and the
>>>>>> secondary should close the NBD server) so it is probably okay to ignore
>>>>>> the removal for now. Inserting the filter dynamically is probably
>>>>>> needed though.
>>>>
>>>> Or maybe just enabling/disabling?
>> Hmm, after failover, the secondary qemu should become primary qemu, but we
>> don't
>> know the nbd server's IP/port when we execute the secondary qemu. So we need
>> to inserting nbd client dynamically after failover.
>
> True, but secondary->primary switch is already not supported in v3.
Yes, we should consider it, and support it more easily later.
If we can add a filter dynamically, we can add a filter that's file is nbd
dynamically after secondary qemu's nbd server is ready. In this case, I think
there is no need to touch nbd client.
Thanks
Wen Congyang
>
> Kevin/Stefan, is there a design document somewhere that covers at least
> static filters?
>
> Paolo
> .
>
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, (continued)
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Wen Congyang, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Kevin Wolf, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Dr. David Alan Gilbert, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Dr. David Alan Gilbert, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Fam Zheng, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Wen Congyang, 2015/04/23
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description,
Wen Congyang <=
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Dr. David Alan Gilbert, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Wen Congyang, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Wen Congyang, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/24
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Stefan Hajnoczi, 2015/04/27
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Paolo Bonzini, 2015/04/29
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Gonglei, 2015/04/29
- Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description, Stefan Hajnoczi, 2015/04/30