From: Wen Congyang <wency@cn.fujitsu.com>
To: Fam Zheng <famz@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>,
Jiang Yunhong <yunhong.jiang@intel.com>,
Dong Eddie <eddie.dong@intel.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
qemu devel <qemu-devel@nongnu.org>,
Gonglei <arei.gonglei@huawei.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Yang Hongyang <yanghy@cn.fujitsu.com>,
jsnow@redhat.com, zhanghailiang <zhang.zhanghailiang@huawei.com>
Subject: Re: [Qemu-devel] [RFC PATCH 01/14] docs: block replication's description
Date: Wed, 11 Mar 2015 15:01:01 +0800 [thread overview]
Message-ID: <54FFE82D.9010306@cn.fujitsu.com> (raw)
In-Reply-To: <20150311064952.GG1437@ad.nay.redhat.com>
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.
Thanks
Wen Congyang
>
> Fam
>
> .
>
next prev parent reply other threads:[~2015-03-11 6:58 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-12 3:07 [Qemu-devel] [RFC PATCH 00/14] Block replication for continuous checkpoints Wen Congyang
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 01/14] docs: block replication's description Wen Congyang
2015-02-12 7:21 ` Fam Zheng
2015-02-12 7:40 ` Wen Congyang
2015-02-12 8:44 ` Fam Zheng
2015-02-12 9:33 ` Wen Congyang
2015-02-12 9:44 ` Fam Zheng
2015-02-12 10:11 ` Wen Congyang
2015-02-12 10:26 ` famz
2015-02-13 5:09 ` Wen Congyang
2015-02-13 7:01 ` Fam Zheng
2015-02-13 20:29 ` John Snow
2015-03-03 7:53 ` Wen Congyang
2015-03-03 7:59 ` Fam Zheng
2015-03-03 12:12 ` Wen Congyang
2015-03-11 6:44 ` Wen Congyang
2015-03-11 6:49 ` Fam Zheng
2015-03-11 7:01 ` Wen Congyang [this message]
2015-03-11 7:04 ` Fam Zheng
2015-03-11 7:12 ` Wen Congyang
2015-03-13 9:01 ` Wen Congyang
2015-03-13 9:05 ` Fam Zheng
2015-03-16 6:19 ` Wen Congyang
2015-03-25 12:41 ` Paolo Bonzini
2015-02-12 9:36 ` Hongyang Yang
2015-02-12 9:46 ` Fam Zheng
2015-02-24 7:50 ` Wen Congyang
2015-02-25 2:46 ` Fam Zheng
2015-02-25 8:36 ` Wen Congyang
2015-02-25 8:58 ` Fam Zheng
2015-02-25 9:58 ` Wen Congyang
2015-02-26 6:38 ` Wen Congyang
2015-02-26 8:44 ` Fam Zheng
2015-02-26 9:07 ` Wen Congyang
2015-02-26 10:02 ` Fam Zheng
2015-02-27 2:27 ` Wen Congyang
2015-02-27 2:32 ` Fam Zheng
2015-02-25 8:11 ` Wen Congyang
2015-02-25 8:18 ` Fam Zheng
2015-02-25 9:10 ` Wen Congyang
2015-02-25 9:45 ` Fam Zheng
2015-03-04 16:35 ` Dr. David Alan Gilbert
2015-03-05 1:03 ` Wen Congyang
2015-03-05 19:04 ` Dr. David Alan Gilbert
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 02/14] quorom: add a new read pattern Wen Congyang
2015-02-12 6:42 ` Gonglei
2015-02-23 20:36 ` Max Reitz
2015-02-23 21:56 ` Eric Blake
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 03/14] quorum: ignore 0-length child Wen Congyang
2015-02-23 20:43 ` Max Reitz
2015-02-24 2:33 ` Wen Congyang
2015-03-18 5:29 ` Wen Congyang
2015-03-18 12:57 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 04/14] Add new block driver interfaces to control disk replication Wen Congyang
2015-02-23 20:57 ` Max Reitz
2015-02-23 21:58 ` Eric Blake
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 05/14] quorom: implement block driver interfaces for block replication Wen Congyang
2015-02-23 21:22 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 06/14] NBD client: connect to nbd server later Wen Congyang
2015-02-23 21:31 ` Max Reitz
2015-02-25 2:23 ` Wen Congyang
2015-02-25 14:22 ` Max Reitz
2015-02-26 14:07 ` Paolo Bonzini
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 07/14] NBD client: implement block driver interfaces for block replication Wen Congyang
2015-02-23 21:41 ` Max Reitz
2015-02-26 14:08 ` Paolo Bonzini
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 08/14] block: add a new API to create a hidden BlockBackend Wen Congyang
2015-02-23 21:48 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 09/14] block: give backing image its own BlockBackend Wen Congyang
2015-02-23 21:53 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 10/14] allow the backing image access the origin BlockDriverState Wen Congyang
2015-02-23 22:01 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 11/14] allow writing to the backing file Wen Congyang
2015-02-23 22:03 ` Max Reitz
2015-02-26 14:15 ` Paolo Bonzini
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 12/14] Add disk buffer for block replication Wen Congyang
2015-02-23 22:27 ` Max Reitz
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 13/14] COW: move cow interfaces to a seperate file Wen Congyang
2015-02-12 3:07 ` [Qemu-devel] [RFC PATCH 14/14] COLO: implement a new block driver Wen Congyang
2015-02-23 22:35 ` Max Reitz
2015-02-18 16:26 ` [Qemu-devel] [RFC PATCH 00/14] Block replication for continuous checkpoints Paolo Bonzini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=54FFE82D.9010306@cn.fujitsu.com \
--to=wency@cn.fujitsu.com \
--cc=arei.gonglei@huawei.com \
--cc=dgilbert@redhat.com \
--cc=eddie.dong@intel.com \
--cc=famz@redhat.com \
--cc=jsnow@redhat.com \
--cc=kwolf@redhat.com \
--cc=laijs@cn.fujitsu.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
--cc=yanghy@cn.fujitsu.com \
--cc=yunhong.jiang@intel.com \
--cc=zhang.zhanghailiang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.