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Re: [Qemu-block] [Qemu-devel] [Patch v12 00/10] Block replication for co
From: |
Wen Congyang |
Subject: |
Re: [Qemu-block] [Qemu-devel] [Patch v12 00/10] Block replication for continuous checkpoints |
Date: |
Wed, 2 Dec 2015 14:51:20 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 12/02/2015 09:00 AM, Wen Congyang wrote:
> On 12/01/2015 06:40 PM, Dr. David Alan Gilbert wrote:
>> * Wen Congyang (address@hidden) wrote:
>>> Block replication is a very important feature which is used for
>>> continuous checkpoints(for example: COLO).
>>>
>>> You can get the detailed information about block replication from here:
>>> http://wiki.qemu.org/Features/BlockReplication
>>>
>>> Usage:
>>> Please refer to docs/block-replication.txt
>>>
>>> This patch series is based on the following patch series:
>>> 1. http://lists.nongnu.org/archive/html/qemu-devel/2015-11/msg04949.html
>>> 2. http://lists.nongnu.org/archive/html/qemu-devel/2015-11/msg06043.html
>>>
>>> You can get the patch here:
>>> https://github.com/coloft/qemu/tree/wency/block-replication-v12
>>>
>>> You can get the patch with framework here:
>>> https://github.com/coloft/qemu/tree/wency/colo_framework_v11.2
>>
>> Neither of these links work for me, and I see that only messages 0..7 in the
>> series hit the list.
>
> I forgot to push it to github...
> And I also received the messages 0..7, and I don't know what's wrong...
The reason is that: git send-email has a bug:
http://permalink.gmane.org/gmane.comp.version-control.git/274569
Thanks
Wen Congyang
>
> I will push it to github, and resend them.
>
> Thanks
> Wen Congyang
>
>>
>> Dave
>>
>>>
>>> TODO:
>>> 1. Continuous block replication. It will be started after basic functions
>>> are accepted.
>>>
>>> Changs Log:
>>> V12:
>>> 1. Rebase to the newest codes
>>> 2. Use backing reference to replcace 'allow-write-backing-file'
>>> V11:
>>> 1. Reopen the backing file when starting blcok replication if it is not
>>> opened in R/W mode
>>> 2. Unblock BLOCK_OP_TYPE_BACKUP_SOURCE and BLOCK_OP_TYPE_BACKUP_TARGET
>>> when opening backing file
>>> 3. Block the top BDS so there is only one block job for the top BDS and
>>> its backing chain.
>>> V10:
>>> 1. Use blockdev-remove-medium and blockdev-insert-medium to replace backing
>>> reference.
>>> 2. Address the comments from Eric Blake
>>> V9:
>>> 1. Update the error messages
>>> 2. Rebase to the newest qemu
>>> 3. Split child add/delete support. These patches are sent in another
>>> patchset.
>>> V8:
>>> 1. Address Alberto Garcia's comments
>>> V7:
>>> 1. Implement adding/removing quorum child. Remove the option non-connect.
>>> 2. Simplify the backing refrence option according to Stefan Hajnoczi's
>>> suggestion
>>> V6:
>>> 1. Rebase to the newest qemu.
>>> V5:
>>> 1. Address the comments from Gong Lei
>>> 2. Speed the failover up. The secondary vm can take over very quickly even
>>> if there are too many I/O requests.
>>> V4:
>>> 1. Introduce a new driver replication to avoid touch nbd and qcow2.
>>> V3:
>>> 1: use error_setg() instead of error_set()
>>> 2. Add a new block job API
>>> 3. Active disk, hidden disk and nbd target uses the same AioContext
>>> 4. Add a testcase to test new hbitmap API
>>> V2:
>>> 1. Redesign the secondary qemu(use image-fleecing)
>>> 2. Use Error objects to return error message
>>> 3. Address the comments from Max Reitz and Eric Blake
>>>
>>> Wen Congyang (10):
>>> unblock backup operations in backing file
>>> Store parent BDS in BdrvChild
>>> Backup: clear all bitmap when doing block checkpoint
>>> Allow creating backup jobs when opening BDS
>>> docs: block replication's description
>>> Add new block driver interfaces to control block replication
>>> quorum: implement block driver interfaces for block replication
>>> Implement new driver for block replication
>>> support replication driver in blockdev-add
>>> Add a new API to start/stop replication, do checkpoint to all BDSes
>>>
>>> block.c | 145 ++++++++++++
>>> block/Makefile.objs | 3 +-
>>> block/backup.c | 14 ++
>>> block/quorum.c | 78 +++++++
>>> block/replication.c | 549
>>> +++++++++++++++++++++++++++++++++++++++++++++
>>> blockjob.c | 11 +
>>> docs/block-replication.txt | 227 +++++++++++++++++++
>>> include/block/block.h | 9 +
>>> include/block/block_int.h | 15 ++
>>> include/block/blockjob.h | 12 +
>>> qapi/block-core.json | 34 ++-
>>> 11 files changed, 1093 insertions(+), 4 deletions(-)
>>> create mode 100644 block/replication.c
>>> create mode 100644 docs/block-replication.txt
>>>
>>> --
>>> 2.5.0
>>>
>>>
>>>
>> --
>> Dr. David Alan Gilbert / address@hidden / Manchester, UK
>>
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