Xen devel - Jul 2013 - [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.

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)

On Thu, Jul 04, 2013 at 08:08:04AM +0000, Liu, SongtaoX
wrote:
> 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.
> 
I would like to remind you the bugzilla is archived... So there''s no
point in adding new entries to it. The canonical way to report bugs
would be posting to Xen-devel directly.


Wei.
> 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)
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@citrix.com]
> Sent: Thursday, July 04, 2013 4:46 PM
> To: Liu, SongtaoX
> Cc: xen-devel@lists.xen.org; Xu, YongweiX; Ren, Yongjie; Tian, Yongxue;
> wei.liu2@citrix.com
> Subject: Re: [Xen-devel] [bug 1862] Large file remote copy in Windows
> guest (no GPL PV driver) cause networking broken
> 
> On Thu, Jul 04, 2013 at 08:08:04AM +0000, Liu, SongtaoX wrote:
> > 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.
> >
> 
> I would like to remind you the bugzilla is archived... So there''s
no
> point in adding new entries to it. The canonical way to report bugs
> would be posting to Xen-devel directly.
> 
thanks for your info. I agree to report bugs in xen-devel list.
But we just want to document the bugs we found. I think some of the bugs
can''t be resolved in a short time (or in a low priority), but months
later many
people can''t remember the bugs and don''t know how many bugs
Xen have or
don''t know the status of each bug.
If Xen have a bugzilla to track bugs, that''s should be also useful.

--
  Jay
> 
> Wei.
> 
> > 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)
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@lists.xen.org
> > http://lists.xen.org/xen-devel

> -----Original Message-----
> From: Liu, SongtaoX
> Sent: Thursday, July 04, 2013 4:08 PM
> To: xen-devel@lists.xen.org
> 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)