[Xen-devel] [PATCH v12 00/26] COarse-grain LOck-stepping Virtual Machines for Non-stop Service

[Changlong Xie <xiecl.fnst@xxxxxxxxxxxxxx>]

This patchset implemented the COLO feature for Xen.
For detail/install/use of COLO feature, refer to:
http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping

You can get the codes from here:
https://github.com/Pating/xen/tree/changlox/colo_v12

Changlog from v11 to v12
1. Rebase to the upstream xen
2. Address commnets from Ian, Liu Wei and Konard.
Removed old p12,p13; introduce a new p13 what is splited out from old p15, 
introduce
a new p19 what is splited out from old p20.
p1, add A-B, and will update commit message when "xen-load-devices-state" 
relevant
patch merged on qemu side
p3, update comments, add assert() in libxl_domain_create_restore() 
p4, rename "dup_fd_helper" as "dup_cloexec", add missed newline
p5, add A-B
p7, remove repeated commit message, update the specification of libxl 
p8, update the specification of libxc 
p9, add A-B
p10, update commit message, fix blank line issue
p12, merged by old p12,p13(restore_callbacks wait_checkpoit/postcopy/suspend), 
fix blank
line issues, update comments about why COLO only supports HVM 
p13, move stream read manipulations to right place in libxl_internal.h  
p14, merged by old p12(save_callbacks wait_checkpoint), fix blank line issues, 
update Copyright(C)
p16, add "colo_" prefix for merge_secondary_dirty_bitmap()
p17, update COLO description part on man page
p18, fix long line issue
p19, just introduce colo mode and refactor relevant functions
p20, fix repetitive code in libxl__device_disk_from_xs_be(), make colo_port as 
int,  
remove unnecessary comments in libxl__build_device_model_args_new(), simplify 
disk_try_backend() and move the main part to in colo_qdisk_setup() in p21 
p21, fix blank line issue, update Copyright(C)
p22, merged by old p22,p23, update Copyright(C), add commets for NETLINK_COLO, 
remove unnecessary
'{ }', update url in commit message 
p23, fix blank line issue, add some comments for "forwarddev", update 
Copyright(C)
p24, introduce COLO_PROXY_CHECKPOINT_TIMEOUT, ASYNC_CALL 
p26, move colo_proxy_script setup codes to libxl__colo_restore_setup(), 
introduce long options
for main_migrate_receive() 

Changlog from v10 to v11
1. Rebased to then upstream xen
2. Address comments from Liu Wei 
p1, update commit message and remove libxl__domain_restore_device_model
p4, add A-B
p5, update commit message
p6, add A-B
p7,p8 add email address and direction info
p10, merged by old p10,p11 and update comments
p11, merged by old p12,p13 and update comments
p14,p15 move colo structures and functions into libxl_colo.h, and list callbacks
in order, also update commit message
p16, merged by old p18,p19,p20 and remove TODOs
p17, use original code for checking postcopy return value
p18, simplify *if* logic, fix wrong comments, and unset dom_info.quiet in COLO 
p19, add A-B 
p20, fix code style, update comments and man page 
p21,p22,p23,p24 move colo structures and functions into libxl_colo.h 

Changlog from v9 to v10
1. Rebased to the upstream xen
2. Fix one bug found in the test
3. Merge some patches from prepare series
4. Split patch 5 to two patches(patch 4 and 5) according to the comments from
   Wei Liu

Changlog from v8 to v9:
1. Rebased to the upstream xen
2. Fix some bugs found in the test

Changelog from v7 to v8:
1. Rebased to the latest libxl migration v2.

Changelog from v6 to v7:
1. Ported to Libxl migration v2
2. Send dirty bitmap from secondary to primary on libxc side
3. Address review comments

Changelog from v5 to v6:
1. based on migration v2(libxc)
2. split the patchset into prerequisite patchset and this main patchset.

Changelog from v4 to v5:
1. rebase to the latest xen upstream
2. disk replication: blktap2->qdisk
3. nic replication: colo-agent->colo-proxy

Changelog from v3 to v4:
1. rebase to newest xen
2. bug fix

Changlog from v2 to v3:
1. rebase to newest remus
2. add nic replication support

Changlog from v1 to v2:
1. rebase to newest remus
2. add disk replication support

Changlong Xie (2):
  libxl_internal: move stream read manipulations to right place
  Introduce COLO mode and refactor relevant function

Wen Congyang (24):
  tools/libxl: introduction of libxl__qmp_restore to load qemu state
  tools/libxl: introduce libxl__domain_common_switch_qemu_logdirty()
  tools/libxl: Add back channel to allow migration target send data back
  tools/libxl: Introduce new helper function dup_fd_helper()
  tools/libx{l,c}: add back channel to libxc
  docs: add colo readme
  docs/libxl: Introduce CHECKPOINT_CONTEXT to support migration v2 colo
    streams
  libxc/migration: Specification update for DIRTY_PFN_LIST records
  libxc/migration: export read_record for common use
  tools/libxl: add back channel support to write stream
  tools/libxl: add back channel support to read stream
  secondary vm suspend/resume/checkpoint code
  primary vm suspend/resume/checkpoint code
  libxc/restore: support COLO restore
  libxc/save: support COLO save
  implement the cmdline for COLO
  COLO: introduce new API to prepare/start/do/get_error/stop replication
  Support colo mode for qemu disk
  COLO: use qemu block replication
  COLO proxy: implement setup/teardown/preresume/postresume/checkpoint
  COLO nic: implement COLO nic subkind
  setup and control colo proxy on primary side
  setup and control colo proxy on secondary side
  cmdline switches and config vars to control colo-proxy

 docs/README.colo                         |    9 +
 docs/man/xl.conf.pod.5                   |    6 +
 docs/man/xl.pod.1                        |   48 +-
 docs/misc/xl-disk-configuration.txt      |   53 ++
 docs/specs/libxc-migration-stream.pandoc |   27 +-
 docs/specs/libxl-migration-stream.pandoc |   59 +-
 tools/hotplug/Linux/Makefile             |    1 +
 tools/hotplug/Linux/colo-proxy-setup     |  135 ++++
 tools/libxc/include/xenguest.h           |   41 +-
 tools/libxc/xc_nomigrate.c               |    4 +-
 tools/libxc/xc_sr_common.c               |   80 ++-
 tools/libxc/xc_sr_common.h               |   24 +-
 tools/libxc/xc_sr_restore.c              |  246 +++++--
 tools/libxc/xc_sr_save.c                 |  100 ++-
 tools/libxc/xc_sr_stream_format.h        |   31 +-
 tools/libxl/Makefile                     |    4 +
 tools/libxl/libxl.c                      |   87 ++-
 tools/libxl/libxl.h                      |   29 +-
 tools/libxl/libxl_colo.h                 |  143 ++++
 tools/libxl/libxl_colo_nic.c             |  320 +++++++++
 tools/libxl/libxl_colo_proxy.c           |  277 ++++++++
 tools/libxl/libxl_colo_qdisk.c           |  230 +++++++
 tools/libxl/libxl_colo_restore.c         | 1087 ++++++++++++++++++++++++++++++
 tools/libxl/libxl_colo_save.c            |  694 +++++++++++++++++++
 tools/libxl/libxl_create.c               |   88 ++-
 tools/libxl/libxl_device.c               |   11 +
 tools/libxl/libxl_dm.c                   |  177 ++++-
 tools/libxl/libxl_dom_save.c             |  103 +--
 tools/libxl/libxl_internal.h             |  216 ++++--
 tools/libxl/libxl_qmp.c                  |  106 +++
 tools/libxl/libxl_remus_disk_drbd.c      |   38 +-
 tools/libxl/libxl_save_callout.c         |   53 +-
 tools/libxl/libxl_save_helper.c          |    8 +-
 tools/libxl/libxl_save_msgs_gen.pl       |   13 +-
 tools/libxl/libxl_sr_stream_format.h     |   11 +
 tools/libxl/libxl_stream_read.c          |  106 ++-
 tools/libxl/libxl_stream_write.c         |  100 ++-
 tools/libxl/libxl_types.idl              |   13 +
 tools/libxl/libxlu_disk_l.l              |   17 +
 tools/libxl/xl.c                         |    3 +
 tools/libxl/xl.h                         |    1 +
 tools/libxl/xl_cmdimpl.c                 |  108 ++-
 tools/libxl/xl_cmdtable.c                |    4 +-
 tools/ocaml/libs/xl/xenlight_stubs.c     |    2 +-
 tools/python/xen/migration/libxc.py      |   68 +-
 tools/python/xen/migration/libxl.py      |    9 +
 46 files changed, 4616 insertions(+), 374 deletions(-)
 create mode 100644 docs/README.colo
 create mode 100755 tools/hotplug/Linux/colo-proxy-setup
 create mode 100644 tools/libxl/libxl_colo.h
 create mode 100644 tools/libxl/libxl_colo_nic.c
 create mode 100644 tools/libxl/libxl_colo_proxy.c
 create mode 100644 tools/libxl/libxl_colo_qdisk.c
 create mode 100644 tools/libxl/libxl_colo_restore.c
 create mode 100644 tools/libxl/libxl_colo_save.c

-- 
1.9.3




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