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[Qemu-devel] [RFC PATCH V10 0/7] Introduce COLO-compare


From: Zhang Chen
Subject: [Qemu-devel] [RFC PATCH V10 0/7] Introduce COLO-compare
Date: Tue, 26 Jul 2016 09:49:47 +0800

COLO-compare is a part of COLO project. It is used
to compare the network package to help COLO decide
whether to do checkpoint.

The full version in this github:
https://github.com/zhangckid/qemu/tree/colo-v2.7-proxy-mode-compare-with-colo-base-jul22

v10:
  - fix typo
  - Should we make patch 5 independent with this series?
    This patch just add a API for qemu-char.

v9:
 p5:
  - use chr_update_read_handler_full() replace
    the chr_update_read_handler()
  - use io_watch_poll_prepare_full() replace
    the io_watch_poll_prepare()
  - use io_watch_poll_funcs_full replace
    the io_watch_poll_funcs
  - avoid code duplication

v8:
 p5:
  - add new patch:
    qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext

v7:
 p5:
   - add [PATCH]qemu-char: Fix context for g_source_attach()
     in this patch series.

v6: 
 p6:
   - add more commit log.
   - fix icmp comparison to compare all packet.

 p5:
   - add more cpmments in commit log.
   - change REGULAR_CHECK_MS to REGULAR_PACKET_CHECK_MS
   - make check old packet independent to compare thread
   - remove thread_status

 p4:
   - change this patch only about
     Connection and ConnectionKey.
   - add some comments in commit log.
   - remove mode in fill_connection_key().
   - fix some comments and bug.
   - move colo_conn_state to patch of
     "work with colo-frame"
   - remove conn_list_lock.
   - add MAX_QUEUE_SIZE, if primary_list or
     secondary_list biger than MAX_QUEUE_SIZE
     we will drop packet. 

 p3:
   - add new independent kernel jhash patch.

 p2:
   - add new independent colo-base patch.

 p1:
   - add a ascii figure and some comments to explain it
   - move trace.h to p2
   - move QTAILQ_HEAD(, CompareState) net_compares to
     patch of "work with colo-frame"
   - add some comments in qemu-option.hx


v5:
 p3:
    - comments from Jason
      we poll and handle chardev in comapre thread,
      Through this way, there's no need for extra 
      synchronization with main loop
      this depend on another patch:
      qemu-char: Fix context for g_source_attach()
    - remove QemuEvent
 p2:
    - remove conn->list_lock
 p1:
    - move compare_pri/sec_chr_in to p3
    - move compare_chr_send to p2

v4:
 p4:
    - add some comments
    - fix some trace-events
    - fix tcp compare error
 p3:
    - add rcu_read_lock().
    - fix trace name
    - fix jason's other comments
    - rebase some Dave's branch function
 p2:
    - colo_compare_connection() change g_queue_push_head() to
    - g_queue_push_tail() match to sorted order.
    - remove pkt->s
    - move data structure to colo-base.h
    - add colo-base.c reuse codes for filter-rewriter
    - add some filter-rewriter needs struct
    - depends on previous SocketReadState patch
 p1:
    - except move qemu_chr_add_handlers()
      to colo thread
    - remove class_finalize
    - remove secondary arp codes
    - depends on previous SocketReadState patch

v3:
  - rebase colo-compare to colo-frame v2.7
  - fix most of Dave's comments
    (except RCU)
  - add TCP,UDP,ICMP and other packet comparison
  - add trace-event
  - add some comments
  - other bug fix
  - add RFC index
  - add usage in patch 1/4

v2:
  - add jhash.h

v1:
  - initial patch


Zhang Chen (7):
  colo-compare: introduce colo compare initialization
  colo-base: add colo-base to define and handle packet
  Jhash: add linux kernel jhashtable in qemu
  colo-compare: track connection and enqueue packet
  qemu-char: Add qemu_chr_add_handlers_full() for GMaincontext
  colo-compare: introduce packet comparison thread
  colo-compare: add TCP,UDP,ICMP packet comparison

 include/qemu/jhash.h  |  61 ++++
 include/sysemu/char.h |  11 +-
 net/Makefile.objs     |   2 +
 net/colo-base.c       | 183 ++++++++++++
 net/colo-base.h       |  71 +++++
 net/colo-compare.c    | 765 ++++++++++++++++++++++++++++++++++++++++++++++++++
 qemu-char.c           | 117 +++++---
 qemu-options.hx       |  38 +++
 trace-events          |   9 +
 vl.c                  |   3 +-
 10 files changed, 1214 insertions(+), 46 deletions(-)
 create mode 100644 include/qemu/jhash.h
 create mode 100644 net/colo-base.c
 create mode 100644 net/colo-base.h
 create mode 100644 net/colo-compare.c

-- 
2.7.4






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