Re: [Qemu-devel] [RFC PATCH v2 00/10] Add colo-proxy based on netfilter

[Zhang Chen]

On 12/29/2015 02:58 PM, Jason Wang wrote:
> On 12/29/2015 02:31 PM, Zhang Chen wrote:
> > Hi~
> > Just a small ping...
> > No news for a week.
> > Colo proxy is a part of COLO project, we need review and comments.
> >
> >
> > Thanks
> > zhangchen
> Hi, will find sometime to review this this week.
>
> Thanks

Thanks very much for your help~~

> > On 12/22/2015 06:42 PM, Zhang Chen wrote:
> > > From: zhangchen <address@hidden>
> > >
> > > Hi,all
> > >
> > > This patch add an colo-proxy object, COLO-Proxy is a part of COLO,
> > > based on qemu netfilter and it's a plugin for qemu netfilter. the
> > > function
> > > keep Secondary VM connect normal to Primary VM and compare packets
> > > sent by PVM to sent by SVM.if the packet difference,notify COLO do
> > > checkpoint and send all primary packet has queued.
> > >
> > > You can also get the series from:
> > >
> > > https://github.com/zhangckid/qemu/tree/colo-v2.2-periodic-mode-with-colo-proxyV2
> > >
> > >
> > > Usage:
> > >
> > > primary:
> > > -netdev tap,id=bn0 -device e1000,netdev=bn0
> > > -object
> > > colo-proxy,id=f0,netdev=bn0,queue=all,mode=primary,addr=host:port
> > >
> > > secondary:
> > > -netdev tap,id=bn0 -device e1000,netdev=bn0
> > > -object
> > > colo-proxy,id=f0,netdev=bn0,queue=all,mode=secondary,addr=host:port
> > >
> > > NOTE:
> > > queue must set "all". See enum NetFilterDirection for detail.
> > > colo-proxy need queue all packets
> > > colo-proxy V2 just can compare ip packet
> > >
> > >
> > > ## Background
> > >
> > > COLO FT/HA (COarse-grain LOck-stepping Virtual Machines for Non-stop
> > > Service)
> > > project is a high availability solution. Both Primary VM (PVM) and
> > > Secondary VM
> > > (SVM) run in parallel. They receive the same request from client, and
> > > generate
> > > responses in parallel too. If the response packets from PVM and SVM are
> > > identical, they are released immediately. Otherwise, a VM checkpoint (on
> > > demand)is conducted.
> > >
> > > Paper:
> > > http://www.socc2013.org/home/program/a3-dong.pdf?attredirects=0
> > >
> > > COLO on Xen:
> > > http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping
> > >
> > > COLO on Qemu/KVM:
> > > http://wiki.qemu.org/Features/COLO
> > >
> > > By the needs of capturing response packets from PVM and SVM and
> > > finding out
> > > whether they are identical, we introduce a new module to qemu networking
> > > called colo-proxy.
> > >
> > > V2:
> > >     rebase colo-proxy with qemu-colo-v2.2-periodic-mode
> > >     fix dave's comments
> > >     fix wency's comments
> > >     fix zhanghailiang's comments
> > >
> > > v1:
> > >     initial patch.
> > >
> > >
> > >
> > > zhangchen (10):
> > >     Init colo-proxy object based on netfilter
> > >     Jhash: add linux kernel jhashtable in qemu
> > >     Colo-proxy: add colo-proxy framework
> > >     Colo-proxy: add data structure and jhash func
> > >     net/colo-proxy: Add colo interface to use proxy
> > >     net/colo-proxy: add socket used by forward func
> > >     net/colo-proxy: Add packet enqueue & handle func
> > >     net/colo-proxy: Handle packet and connection
> > >     net/colo-proxy: Compare pri pkt to sec pkt
> > >     net/colo-proxy: Colo-proxy do checkpoint and clear
> > >
> > >    include/qemu/jhash.h |  61 ++++
> > >    net/Makefile.objs    |   1 +
> > >    net/colo-proxy.c     | 939
> > > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > >    net/colo-proxy.h     |  24 ++
> > >    qemu-options.hx      |   6 +
> > >    trace-events         |   8 +
> > >    vl.c                 |   3 +-
> > >    7 files changed, 1041 insertions(+), 1 deletion(-)
> > >    create mode 100644 include/qemu/jhash.h
> > >    create mode 100644 net/colo-proxy.c
> > >    create mode 100644 net/colo-proxy.h
>
>
> .

--
Thanks
zhangchen