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_v13
Changlog from v12 to v13
1. Rebase to the upstream xen
2. Address commnets from Ian and Liu Wei.
p7, Add A-B
p8, Add A-B
p10, Add A-B
p11, Add A-B
p12, Add LOG(ERROR, )
p13, Add A-B
p14, Remove libxl__ao_complete(xxx)
p15, Add A-B
p16, Add A-B
p17, Add A-B, replace "-c" with "--colo" for migrate-receive()
p19, Add A-B, introduce "switch ... case ..."
p21, Add A-B
p22, Add A-B
p23, replace "forwarddev" with "coloft_fowarddev"
p24, Add A-B
p25, Add A-B
p26, replace "--script" with "--coloft-script"
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 | 696 +++++++++++++++++++
tools/libxl/libxl_create.c | 90 ++-
tools/libxl/libxl_device.c | 11 +
tools/libxl/libxl_dm.c | 176 ++++-
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 | 11 +
tools/libxl/libxlu_disk_l.l | 17 +
tools/libxl/xl.c | 3 +
tools/libxl/xl.h | 1 +
tools/libxl/xl_cmdimpl.c | 109 ++-
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, 4618 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
