Re: [Qemu-devel] [PATCH COLO-Frame v19 00/22] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service (FT)

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

ping ?

On 2016/9/1 11:24, zhanghailiang wrote:
> This is the 19th version of COLO frame series.
>
> According to the suggestion of Juan and Amit,
> I dropped parts of the optimization patches to make it easier for review.
>
> Besides, I discarded the network related patches since the development of
> COLO proxy goes well, It is very likely to be merged in QEMU 2.8,
> Please see [PATCH V12 02/10] colo-compare: introduce colo compare initialization
> for more information. The original network related patches in this series are
> to buffer the network packets till a checkpointing be successfully achieved,
> just like Remus does in XEN, but these patches will be reverted in COLO compare
> series. So here, it is unnecessary to add them.
>
> You can still test this series like before. Or refer to docs/COLO-FT.txt.
>
> It is based on 'Block replication' series which has been merged in Stefan's
> branch https://github.com/stefanha/qemu/commits/block-next.
>
> The complete codes can be found from the link:
> https://github.com/coloft/qemu/commits/colo-v4.1-periodic-mode
>
> Please review. Thanks ;)
>
> TODO:
> 1. Checkpoint based on proxy in qemu
> 2. The capability of continuous FT
> 3. Optimize the VM's downtime during checkpoint
>
> v19:
>   - Add documentation about COLO (patch 21)
>   - Dropped network related patches
>   - Fix parts of patches' title and comments
>
> zhanghailiang (22):
>    migration: Introduce capability 'x-colo' to migration
>    COLO: migrate COLO related info to secondary node
>    migration: Enter into COLO mode after migration if COLO is enabled
>    migration: Switch to COLO process after finishing loadvm
>    COLO: Establish a new communicating path for COLO
>    COLO: Introduce checkpointing protocol
>    COLO: Add a new RunState RUN_STATE_COLO
>    COLO: Send PVM state to secondary side when do checkpoint
>    COLO: Load VMState into QIOChannelBuffer before restore it
>    COLO: Add checkpoint-delay parameter for migrate-set-parameters
>    COLO: Synchronize PVM's state to SVM periodically
>    COLO: Add 'x-colo-lost-heartbeat' command to trigger failover
>    COLO: Introduce state to record failover process
>    COLO: Implement the process of failover for primary VM
>    COLO: Implement failover work for secondary VM
>    COLO: Shutdown related socket fd while do failover
>    COLO: Don't do failover while loading VM's state
>    COLO: Handle shutdown command for VM in COLO state
>    COLO: Update the global runstate after going into colo state
>    COLO: Add block replication into colo process
>    docs: Add documentation for COLO feature
>    configure: Support enable/disable COLO feature
>
>   configure                     |  11 +
>   docs/COLO-FT.txt              | 190 ++++++++++++
>   hmp-commands.hx               |  15 +
>   hmp.c                         |  15 +
>   hmp.h                         |   1 +
>   include/migration/colo.h      |  40 +++
>   include/migration/failover.h  |  33 ++
>   include/migration/migration.h |  11 +
>   include/sysemu/sysemu.h       |   3 +
>   migration/Makefile.objs       |   2 +
>   migration/colo-comm.c         |  72 +++++
>   migration/colo-failover.c     |  84 +++++
>   migration/colo.c              | 694 ++++++++++++++++++++++++++++++++++++++++++
>   migration/migration.c         |  86 +++++-
>   migration/ram.c               |  37 ++-
>   migration/trace-events        |   6 +
>   qapi-schema.json              |  88 +++++-
>   qmp-commands.hx               |  24 +-
>   stubs/Makefile.objs           |   1 +
>   stubs/migration-colo.c        |  51 ++++
>   vl.c                          |  30 +-
>   21 files changed, 1468 insertions(+), 26 deletions(-)
>   create mode 100644 docs/COLO-FT.txt
>   create mode 100644 include/migration/colo.h
>   create mode 100644 include/migration/failover.h
>   create mode 100644 migration/colo-comm.c
>   create mode 100644 migration/colo-failover.c
>   create mode 100644 migration/colo.c
>   create mode 100644 stubs/migration-colo.c
>