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Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and
From: |
Wen Congyang |
Subject: |
Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child() |
Date: |
Thu, 17 Mar 2016 18:23:07 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
On 03/17/2016 06:07 PM, Alberto Garcia wrote:
> On Thu 17 Mar 2016 10:56:09 AM CET, Wen Congyang wrote:
>>> We should have the failure modes documented, and how you'll use it
>>> after failover etc Without that it's really difficult to tell if this
>>> naming is right.
>>
>> For COLO, children.0 is the real disk, children.1 is replication
>> driver. After failure, children.1 will be removed by the user. If we
>> want to continue do COLO, we need add a new children.1 again.
>
> What if children.0 fails ?
For COLO, reading from children.1 always fails. if children.0 fails, it
means that reading from the disk fails. The guest vm will see the I/O error.
Thanks
Wen Congyang
>
> Berto
>
>
> .
>
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), (continued)
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Changlong Xie, 2016/03/13
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Changlong Xie, 2016/03/14
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Alberto Garcia, 2016/03/16
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Wen Congyang, 2016/03/16
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Alberto Garcia, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Wen Congyang, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Wen Congyang, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Alberto Garcia, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(),
Wen Congyang <=
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Wen Congyang, 2016/03/17
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/18
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Max Reitz, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Eric Blake, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Max Reitz, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Max Reitz, 2016/03/29
- Re: [Qemu-devel] [PATCH v12 2/3] quorum: implement bdrv_add_child() and bdrv_del_child(), Dr. David Alan Gilbert, 2016/03/29