This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-devel] Networking problem in guest domains

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Networking problem in guest domains
From: David F Barrera <dfbp@xxxxxxxxxx>
Date: Wed, 01 Feb 2006 12:01:21 -0600
Delivery-date: Wed, 01 Feb 2006 18:11:18 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Starting with changesets 8707 in my daily testing, I've been unable to
access guest domains via SSH or telnet. 


When I access the guest domains via 'xm console', I am able to
ascertain that networking is up on them; I ping external machines, mount NFS
share, etc. However, I cannot ssh into them from external machines, or even 
from dom0.

This is happening on all machines, SLES 9 SP2, RHEL 4, and FC3/4 based machines,
both x86 and x86_64.

Trying to SSH into guest domain from external machine:

dyn95341161:~ # ssh lamb5-vm1

No response or comeback from login.

Guest domains accessed via 'xm console'. You can see NFS mount and ping 
lamb5-vm1:~ # df -T
Filesystem    Type   1K-blocks      Used Available Use% Mounted on
/dev/sda6     ext3    19307400   3155892  15170744  18% /
tmpfs        tmpfs      114024         0    114024   0% /dev/shm
devpts      devpts    19307400   3155892  15170744  18% /dev/pts
               nfs   206429688  80941920 115001656  42% /skyline
lamb5-vm1:~ # ping
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=63 time=0.452 ms
64 bytes from icmp_seq=2 ttl=63 time=1.15 ms

All services are up on the guest domains. I tried to telnet into the guest 
domain, and the following
message displays:

[root@thinkcentre-dom0 xen-unstable.hg]# telnet
Connected to thinkcentre-domU-009053041223.austin.ibm.com (
Escape character is '^]'.
telnetd: All network ports in use.
Connection closed by foreign host.

Has anyone else seen this problem? 

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "

Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] Networking problem in guest domains, David F Barrera <=