Re: [Xen-devel] [PATCH v4 --for 4.6 COLOPre 00/25] Prerequisite patches for COLO

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

Seems my reply emails last night are lost. they didn't appear on the
list, I'm going to repost them.

On 07/15/2015 03:45 PM, Yang Hongyang wrote:
> This patchset is Prerequisite for COLO feature. Refer to:
> http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping
>
> This patchse is based on Andrew Cooper's Libxl migration v4.1:
>    
> http://xenbits.xen.org/gitweb/?p=people/andrewcoop/xen.git;a=shortlog;h=refs/heads/libxl-migv2-v4.1
>
> In this version, I moved some of the COLO specific patches down to the COLO
> main series, so most patches of this series are refactoring and can be applied
> first.
>
> I've done some simple test. Both Remus and normal migration work after apply
> this patchset. The patch to fix Remus on migration v2 will be sent later as
> a seperate patch.
>
> You can also get the patchset from:
>    https://github.com/macrosheep/xen/tree/colo-v8
>
> v3->v4:
>   - Rebased to the latest migration v2 branch
>   - Addressed comments from last round
>
> v2->v3:
>   - Merge '[PATCH v2 0/6] Misc cleanups for libxl' into this patchset
>     for easy review
>   - Addressed review comments
>   - Add back channel to libxc
>   - Introduce should_checkpoint callback
>   - Introduce DIRTY_BITMAP record on libxc side
>   - Introduce COLO_CONTEXT record on libxl side
>   - Ported to Libxl migration v2
>
> v1->v2:
>   - Rebased to [PATCH v2 0/6] Misc cleanups for libxl
>   - Add a bugfix for the error handling of process_record
>
>
> Wen Congyang (2):
>    tools/libxc: support to resume uncooperative HVM guests
>    tools/libxl: Add back channel to allow migration target send data back
>
> Yang Hongyang (23):
>    tools/libxl: rename libxl__domain_suspend to libxl__domain_save
> A  tools/libxl: move domain suspend code into libxl_dom_suspend.c
> A  tools/libxl: move domain resume code into libxl_dom_suspend.c
>    tools/libxl: rename remus checkpoint callbacks
>    libxl/remus: introduce libxl__remus_setup
>    libxl/remus: introduce libxl__remus_teardown
>    libxl/remus: init checkpoint_callback in Remus checkpoint callback
>    tools/libxl: move remus code into libxl_remus.c
> A  tools/libxl: move save/restore code into libxl_dom_save.c
>    libxl/save: Refactor libxl__domain_suspend_state
>    tools/libxl: introduce enum type libxl_checkpointed_stream
>    migration/save: pass checkpointed_stream from libxl to libxc
>    tools/libxl: introduce libxl__domain_restore_device_model to load qemu
>      state
>    tools/libxl: check QEMU state before resume dm
>    tools/libxl: Update libxl_domain_unpause() to support qemu-xen
> A  tools/libxl: introduce libxl__domain_common_switch_qemu_logdirty()
> A  tools/libxl: export logdirty_init
>    tools/libx{l,c}: add back channel to libxc
>    tools/libxl: rename remus device to checkpoint device
> A  tools/libxl: adjust the indentation
>    tools/libxl: store remus_ops in checkpoint device state
>    tools/libxl: move remus state into a seperate structure
>    tools/libxl: seperate device init/cleanup from checkpoint device layer
>
>   tools/libxc/include/xenguest.h        |   13 +-
>   tools/libxc/xc_domain_restore.c       |    4 +-
>   tools/libxc/xc_domain_save.c          |    6 +-
>   tools/libxc/xc_nomigrate.c            |    3 +-
>   tools/libxc/xc_resume.c               |   22 +-
>   tools/libxc/xc_sr_common.h            |    2 +-
>   tools/libxc/xc_sr_restore.c           |    2 +-
>   tools/libxc/xc_sr_save.c              |    5 +-
>   tools/libxl/Makefile                  |    5 +-
>   tools/libxl/libxl.c                   |  119 +---
>   tools/libxl/libxl.h                   |   30 +-
>   tools/libxl/libxl_checkpoint_device.c |  282 ++++++++
>   tools/libxl/libxl_create.c            |   33 +-
>   tools/libxl/libxl_dom.c               | 1243 ---------------------------------
>   tools/libxl/libxl_dom_save.c          |  721 +++++++++++++++++++
>   tools/libxl/libxl_dom_suspend.c       |  503 +++++++++++++
>   tools/libxl/libxl_internal.h          |  246 ++++---
>   tools/libxl/libxl_netbuffer.c         |  117 ++--
>   tools/libxl/libxl_nonetbuffer.c       |   10 +-
>   tools/libxl/libxl_qmp.c               |   10 +
>   tools/libxl/libxl_remus.c             |  395 +++++++++++
>   tools/libxl/libxl_remus_device.c      |  327 ---------
>   tools/libxl/libxl_remus_disk_drbd.c   |   56 +-
>   tools/libxl/libxl_save_callout.c      |   43 +-
>   tools/libxl/libxl_save_helper.c       |    9 +-
>   tools/libxl/libxl_stream_write.c      |   14 +-
>   tools/libxl/libxl_types.idl           |   10 +-
>   tools/libxl/xl_cmdimpl.c              |   21 +-
>   tools/ocaml/libs/xl/xenlight_stubs.c  |    2 +-
>   29 files changed, 2321 insertions(+), 1932 deletions(-)
>   create mode 100644 tools/libxl/libxl_checkpoint_device.c
>   create mode 100644 tools/libxl/libxl_dom_save.c
>   create mode 100644 tools/libxl/libxl_dom_suspend.c
>   create mode 100644 tools/libxl/libxl_remus.c
>   delete mode 100644 tools/libxl/libxl_remus_device.c
--
Thanks,
Yang.

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