On 02/01/2016 05:11 PM, Dr. David Alan Gilbert wrote:
* Li Zhijian (lizhij...@cn.fujitsu.com) wrote:
On 02/01/2016 10:57 AM, Jason Wang wrote:
On 01/29/2016 09:38 AM, Li Zhijian wrote:
On 01/28/2016 01:44 PM, Jason Wang wrote:
On 01/27/2016 10:40 AM, Zhang Chen wrote:
From: ZhangChen <zhangchen.f...@cn.fujitsu.com>
Traffic-mirror is a netfilter plugin.
It gives qemu the ability to copy and mirror guest's
net packet. we output packet to chardev.
usage:
-netdev tap,id=hn0
-chardev socket,id=mirror0,host=ip_primary,port=X,server,nowait
-traffic-mirror,id=m0,netdev=hn0,queue=tx/rx/all,outdev=mirror0
Signed-off-by: ZhangChen <zhangchen.f...@cn.fujitsu.com>
Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
Reviewed-by: Yang Hongyang <hongyang.y...@easystack.cn>
Thanks for the patch. Several questions:
- I'm curious about how the patch was tested? Simple setup e.g:
-netdev tap,id=hn0 -device virtio-net-pci,netdev=hn0 -chardev
socket,id=c0,host=localhost,port=4444,server,nowait -object
traffic-mirror,netdev=hn0,outdev=c0,id=f0 -netdev
socket,id=s0,connect=127.0.0.1:4444 -device e1000,netdev=s0
a strange thing is about "host=localhost", connection is refused at SUSE 11.3
but
connection is connected successfully at Ubuntu 15.10 if i launch qemu with the
command line above.
I try to launch qemu at three physical machines installed with SUSE 11.3, they
all
connect failed. But when I specified "host=127.0.0.1", the connection is OK.
I have comfirmed that:
- "localhost have pointed to 127.0.0.1 if I "ping localhost" at SUSE
- "telnet localhost 4444" works at SUSE
My guess is that it's IPv6 related; check the /etc/hosts so see if there's
a ::1 entry for localhost; I've seen some weird behaviour on rhel in the
same way but in other uses.
Thank you Dave,
As you said, there are 2 entry record (ipv4 and ipv6) for "localhost" at my
/etc/hosts
after removing the ipv6 entry, the whole world become fine ^_^
Thanks
Li Zhijian
Dave
does not works for me.
Hi， Jason
I just test the mirror using the command line above, it don't work too.
I am looking to it, and find that seems because the -net socket
problem that
I have ever post a patch try to fix（refer to ↓）
[Qemu-devel] [PATCH] report a error message if -net socket can not
connect to server
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg00758.html
Will have a look at this.
after applying this patch, the qemu monitor tell me following message:
(qemu) qemu-system-x86_64: net socket is not connected Connection refused
Maybe two issues. Have you tired to start the mirror on one VM and then
using socket backend to connect it from another VM?
Yes, if i connect the mirror on VM1 using socket backend from another VM2, the
connection
is established successfully. But on VM2 guest, I can't dump any packet using
'tcpdump'
That's because in current version code, mirror is not compatible with socket
backend and
we will fix it in next version.
Best regards.
Li Zhijian
Thanks
Li Zhijian
.
--
Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
.
--
Best regards.
Li Zhijian (8555)
