Re: [Qemu-devel] [PATCH COLO-BLOCK v8 00/18] Block replication for continuous checkpoints

[Wen Congyang]

Ping...

Does anyone have time to review this patchset? The block replication is not 
only for COLO. All
other HA/FT can reuse it(for example, microcheckpoint).

Thanks
Wen Congyang

On 07/07/2015 04:42 PM, Wen Congyang wrote:
> Block replication is a very important feature which is used for
> continuous checkpoints(for example: COLO).
> 
> You can the detailed information about block replication from here:
> http://wiki.qemu.org/Features/BlockReplication
> 
> Usage:
> Please refer to docs/block-replication.txt
> 
> You can get the patch here:
> https://github.com/coloft/qemu/tree/wency/block-replication-v8
> 
> You can get the patch with framework here:
> https://github.com/coloft/qemu/tree/wency/colo_framework_v8
> 
> TODO:
> 1. Continuous block replication. It will be started after basic functions
>    are accepted.
> 
> Wen Congyang (18):
>   Add new block driver interface to add/delete a BDS's child
>   quorum: implement block driver interfaces add/delete a BDS's child
>   hmp: add monitor command to add/remove a child
>   introduce a new API qemu_opts_absorb_qdict_by_index()
>   quorum: allow ignoring child errors
>   introduce a new API to enable/disable attach device model
>   introduce a new API to check if blk is attached
>   block: make bdrv_put_ref_bh_schedule() as a public API
>   Backup: clear all bitmap when doing block checkpoint
>   allow writing to the backing file
>   Allow creating backup jobs when opening BDS
>   block: Allow references for backing files
>   docs: block replication's description
>   Add new block driver interfaces to control block replication
>   skip nbd_target when starting block replication
>   quorum: implement block driver interfaces for block replication
>   Implement new driver for block replication
>   Add a new API to start/stop replication, do checkpoint to all BDSes
> 
>  block.c                        | 266 ++++++++++++++++++++++++-
>  block/Makefile.objs            |   3 +-
>  block/backup.c                 |  13 ++
>  block/block-backend.c          |  33 +++
>  block/quorum.c                 | 244 ++++++++++++++++++++++-
>  block/replication.c            | 443 
> +++++++++++++++++++++++++++++++++++++++++
>  blockdev.c                     |  90 ++++++---
>  blockjob.c                     |  10 +
>  docs/block-replication.txt     | 182 +++++++++++++++++
>  hmp-commands.hx                |  28 +++
>  include/block/block.h          |  15 ++
>  include/block/block_int.h      |  19 ++
>  include/block/blockjob.h       |  12 ++
>  include/qemu/option.h          |   2 +
>  include/sysemu/block-backend.h |   3 +
>  include/sysemu/blockdev.h      |   2 +
>  qapi/block.json                |  16 ++
>  util/qemu-option.c             |  44 ++++
>  18 files changed, 1378 insertions(+), 47 deletions(-)
>  create mode 100644 block/replication.c
>  create mode 100644 docs/block-replication.txt
>