RE: Network connection with COLO VM

[Zhang, Chen]

> -----Original Message-----
> From: Dr. David Alan Gilbert <address@hidden>
> Sent: Wednesday, November 27, 2019 6:51 PM
> To: Daniel Cho <address@hidden>; Zhang, Chen
> <address@hidden>; address@hidden
> Cc: address@hidden
> Subject: Re: Network connection with COLO VM
> 
> * Daniel Cho (address@hidden) wrote:
> > Hello everyone,
> >
> > Could we ssh to colo VM (means PVM & SVM are starting)?
> >
> 
> Lets cc in Zhang Chen and Lukas Straub.

Thanks Dave.

> 
> > SSH will connect to colo VM for a while, but it will disconnect with
> > error
> > *client_loop: send disconnect: Broken pipe*
> >
> > It seems to colo VM could not keep network session.
> >
> > Does it be a known issue?
> 
> That sounds like the COLO proxy is getting upset; it's supposed to compare
> packets sent by the primary and secondary and only send one to the outside
> - you shouldn't be talking directly to the guest, but always via the proxy.  
> See
> docs/colo-proxy.txt
> 

Hi Daniel,

I have try ssh to COLO guest with 8 hours, not occurred this issue.
Please check your network/qemu configuration.
But I found another problem maybe related this issue, if no network 
communication for a period of time(maybe 10min), the first message send to 
guest have a chance with delay(maybe 1-5 sec), I will try to fix it when I have 
time.

Thanks
Zhang Chen

> Dave
> 
> > Best Regard,
> > Daniel Cho
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK