Re: [Qemu-devel] [PATCH v14 0/8] Block replication for continuous checkpoints

[Hailiang Zhang <zhang.zhanghailiang@huawei.com>]

ping...

It seems that there is no feedback for a long time, we hope COLO prototype could
be merged in QEMU 2.6, it depends on this series, so please help us.

Thanks.
zhanghailiang

On 2016/1/14 9:12, Changlong Xie wrote:
> It seems i missed someone in CC list, add them.
>
> Thanks
>      -Xie
>
> On 01/13/2016 05:18 PM, Changlong Xie 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/2015-12/msg04570.html
>>
>> You can get the patch here:
>> https://github.com/Pating/qemu/tree/changlox/block-replication-v14
>>
>> You can get the patch with framework here:
>> https://github.com/Pating/qemu/tree/changlox/colo_framework_v13
>>
>> TODO:
>> 1. Continuous block replication. It will be started after basic functions
>>     are accepted.
>>
>> Changs Log:
>> V14:
>> 1. Implement auto complete active commit
>> 2. Implement active commit block job for replication.c
>> 3. Address the comments from Stefan, add replication-specific API and data
>>     structure, also remove old block layer APIs
>> V13:
>> 1. Rebase to the newest codes
>> 2. Remove redundant marcos and semicolon in replication.c
>> 3. Fix typos in block-replication.txt
>> 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 (8):
>>    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
>>    auto complete active commit
>>    Implement new driver for block replication
>>    support replication driver in blockdev-add
>>
>>   block.c                          |  19 ++
>>   block/Makefile.objs              |   3 +-
>>   block/backup.c                   |  14 +
>>   block/mirror.c                   |  13 +-
>>   block/replication-comm.c         |  66 +++++
>>   block/replication.c              | 590 +++++++++++++++++++++++++++++++++++++++
>>   blockdev.c                       |   2 +-
>>   blockjob.c                       |  11 +
>>   docs/block-replication.txt       | 229 +++++++++++++++
>>   include/block/block_int.h        |   4 +-
>>   include/block/blockjob.h         |  12 +
>>   include/block/replication-comm.h |  50 ++++
>>   qapi/block-core.json             |  33 ++-
>>   qemu-img.c                       |   2 +-
>>   14 files changed, 1038 insertions(+), 10 deletions(-)
>>   create mode 100644 block/replication-comm.c
>>   create mode 100644 block/replication.c
>>   create mode 100644 docs/block-replication.txt
>>   create mode 100644 include/block/replication-comm.h
>>
>
>
>
> .
>