Re: [Xen-devel] [bug 1862] Large file remote copy in Windows guest (no GPL PV driver) cause networking broken

["Ren, Yongjie" <yongjie.ren@xxxxxxxxx>]

> -----Original Message-----
> From: Liu, SongtaoX
> Sent: Thursday, July 04, 2013 4:08 PM
> To: xen-devel@xxxxxxxxxxxxx
> Cc: Ren, Yongjie; Xu, YongweiX; Tian, Yongxue
> Subject: [Xen-devel] [bug 1862] Large file remote copy in Windows guest
> (no GPL PV driver) cause networking broken
> 
> Hi, all,
> We encountered a bug, large file remote copy in Windows guest (no GPL PV
> driver) cause networking broken,
> bugzilla link:
> http://bugzilla-archived.xenproject.org//bugzilla/show_bug.cgi?id=1862.
> 
Seem this bug only happens when using qemu-xen-upstream (not traditional).
It might be a critical bug.
As Xen 4.3 use qemu-upstream by default, CCed Xen 4.3 release coordinator to
let him know this issue.  :-)

--
  Jay


> When copying large file from remote server in windows guest, the guest
> emulated rtl8139 network connection will lose, cannot recover.
> Detail steps:
> 1. create a win7 or win8 guest using "xl create win7.hvm" with
> "vif=[ 'type=ioemu, bridge=xenbr0' ]";
> 2. check the network works by "ping -t $lan_server;
> 3. copy large file from remote server;
> 4. after serveral seconds, the network connection will lose, the "ping -t
> $lan_server" will show "Request timed out, Destination host
> unreachable";
> 5. if disable and re-enable the local area connection, invalid IP
> 169.254.xx.xx got
> 
> Regards
> Carl(Songtao)

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