From: Gonglei <arei.gonglei@huawei.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Yang Hongyang <yanghy@cn.fujitsu.com>,
Fam Zheng <famz@redhat.com>, qemu block <qemu-block@nongnu.org>,
armbru@redhat.com, jcody@redhat.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>,
zhanghailiang <zhang.zhanghailiang@huawei.com>,
Max Reitz <mreitz@redhat.com>,
Lai Jiangshan <laijs@cn.fujitsu.com>
Subject: Re: [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description
Date: Wed, 29 Apr 2015 16:37:49 +0800 [thread overview]
Message-ID: <5540985D.9080406@huawei.com> (raw)
In-Reply-To: <55409678.5000002@redhat.com>
On 2015/4/29 16:29, Paolo Bonzini wrote:
>
>
> On 27/04/2015 11:37, Stefan Hajnoczi wrote:
>>>> But it's only for the failover case. Quorum (or a new
>>>> block/colo.c driver or filter) is fine for normal colo
>>>> operation.
>> Perhaps this patch series should mirror the Secondary's disk to a
>> Backup Secondary so that the system can be protected very quickly
>> after failover.
>>
>> I think anyone serious about fault tolerance would deploy a Backup
>> Secondary, otherwise the system cannot survive two failures
>> unless a human administrator is lucky/fast enough to set up a new
>> Secondary.
>
> Let's do one thing at a time. Otherwise nothing of this is going to
> be ever completed...
>
Yes, and the continuous backup feature is on our TODO list. We hope
this series (including basic functions and COLO framework) can be
upstream first.
Regards,
-Gonglei
next prev parent reply other threads:[~2015-04-29 8:59 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-03 10:01 [Qemu-devel] [PATCH COLO v3 00/14] Block replication for continuous checkpoints Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 01/14] docs: block replication's description Wen Congyang
2015-04-20 15:30 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2015-04-21 1:25 ` Wen Congyang
2015-04-21 15:28 ` Paolo Bonzini
2015-04-22 9:18 ` Stefan Hajnoczi
2015-04-22 9:28 ` Wen Congyang
2015-04-23 9:55 ` Stefan Hajnoczi
2015-04-23 10:11 ` Wen Congyang
2015-04-22 9:31 ` Kevin Wolf
2015-04-22 10:12 ` [Qemu-devel] " Paolo Bonzini
2015-04-23 9:00 ` Kevin Wolf
2015-04-23 9:14 ` Wen Congyang
2015-04-23 10:05 ` Paolo Bonzini
2015-04-23 10:17 ` Kevin Wolf
2015-04-23 10:33 ` Paolo Bonzini
2015-04-23 10:40 ` Kevin Wolf
2015-04-23 10:44 ` Paolo Bonzini
2015-04-23 11:35 ` Wen Congyang
2015-04-23 11:36 ` Kevin Wolf
2015-04-23 11:53 ` Paolo Bonzini
2015-04-23 12:05 ` Dr. David Alan Gilbert
2015-04-23 12:11 ` Paolo Bonzini
2015-04-23 12:19 ` Dr. David Alan Gilbert
2015-04-23 12:23 ` Paolo Bonzini
2015-04-24 2:01 ` Fam Zheng
2015-04-24 2:16 ` Wen Congyang
2015-04-24 7:47 ` Paolo Bonzini
2015-04-24 7:55 ` Wen Congyang
2015-04-24 8:58 ` Dr. David Alan Gilbert
2015-04-24 9:04 ` Paolo Bonzini
2015-04-24 9:38 ` Wen Congyang
2015-04-24 9:36 ` Paolo Bonzini
2015-04-24 9:53 ` Wen Congyang
2015-04-24 10:03 ` Paolo Bonzini
2015-04-27 9:37 ` Stefan Hajnoczi
2015-04-29 8:29 ` Paolo Bonzini
2015-04-29 8:37 ` Gonglei [this message]
2015-04-30 14:56 ` Stefan Hajnoczi
2015-05-05 15:23 ` Dr. David Alan Gilbert
2015-05-06 2:26 ` Dong, Eddie
2015-05-06 2:49 ` Fam Zheng
2015-05-08 8:42 ` Stefan Hajnoczi
2015-05-08 9:34 ` Dr. David Alan Gilbert
2015-05-08 9:39 ` Kevin Wolf
2015-05-08 9:55 ` Dr. David Alan Gilbert
2015-04-23 9:26 ` Paolo Bonzini
2015-04-23 9:37 ` Kevin Wolf
2015-04-23 9:41 ` Wen Congyang
2015-04-22 9:29 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2015-04-22 9:42 ` Wen Congyang
2015-04-22 10:39 ` [Qemu-devel] " Dr. David Alan Gilbert
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 02/14] quorum: allow ignoring child errors Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 03/14] NBD client: connect to nbd server later Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 04/14] Add new block driver interfaces to control block replication Wen Congyang
2015-04-22 12:56 ` Eric Blake
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 05/14] quorum: implement block driver interfaces for " Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 06/14] NBD client: " Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 07/14] allow writing to the backing file Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 08/14] Allow creating backup jobs when opening BDS Wen Congyang
2015-04-03 11:06 ` Paolo Bonzini
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 09/14] block: Parse "backing_reference" option to reference existing BDS Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 10/14] util/hbitmap: Add an API to reset all set bits in hbitmap Wen Congyang
2015-04-03 11:05 ` Paolo Bonzini
2015-05-01 16:47 ` [Qemu-devel] [Qemu-block] " John Snow
2015-05-07 2:20 ` Wen Congyang
2015-05-07 18:32 ` John Snow
2015-05-08 0:59 ` Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 11/14] Backup: clear all bitmap when doing block checkpoint Wen Congyang
2015-04-03 11:09 ` Paolo Bonzini
2015-04-07 1:45 ` Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 12/14] qcow2: support colo Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 13/14] skip nbd_target when starting block replication Wen Congyang
2015-04-03 10:01 ` [Qemu-devel] [PATCH COLO v3 14/14] Don't allow a disk use backing reference target Wen Congyang
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