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


Re: [Xen-users] DomU network dies

To: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
Subject: Re: [Xen-users] DomU network dies
From: Olav Lavell <olav@xxxxxxxxx>
Date: Thu, 02 Sep 2010 21:17:57 +0200
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Thu, 02 Sep 2010 12:19:14 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <AANLkTinDBTqCxJX__+s_wq-zSp02of-g33hRwb0=y22A@xxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <19f3ba75f10456e8c95ddc270c5bf2e5@localhost> <AANLkTinDBTqCxJX__+s_wq-zSp02of-g33hRwb0=y22A@xxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: RoundCube Webmail/0.4-beta
On Thu, 2 Sep 2010 07:23:15 +0700, "Fajar A. Nugraha" <fajar@xxxxxxxxx>
> On Thu, Sep 2, 2010 at 3:52 AM, Olav Lavell <olav@xxxxxxxxx> wrote:


>> I tried to use "post-up ethtool -K eth0 tx off" in the
>> /etc/network/interfaces file of the DomU, because the comment says it
>> "might resolve problems for some users." It doesn't in my case.
> try doing it on dom0 as well.

Thank you, Fajar, for your suggestion.

This will have to wait until the weekend when I have more time and
physical access to the computer. I just tried it earlier this afternoon but
it took the Dom0 a much longer time to boot and bring up the network. Not
sure what was going on so I undid the change as quickly as I got access

Just to be clear, should I apply the ethtool-command to the eth0 interface
or to the peth0 and/or vif1.0 on the Dom0?

>> Because I am quite new to Xen I have no clue about how to troubleshoot
>> this situation. My attempts at googling probably were a little
>> as well. Any hints would be appreciated. If I need to post log files,
>> configuration files or any command output I will gladly do so as well.
>> I have thought of "downgrading" to Debian Lenny (after all, Squeeze is
>> still the "testing" distro) and Xen 3.2 (I prefer to use whatever
>> of Xen that Debian offers as packages).
> The thing I'm not sure Debian is the "best" distro for people like
> you, who like to use the distro's packages and would like it to "just
> work". I'd actually recommend you simply use Centos5. Others on this
> list have suggested Opensuse 11.3, but with updated kernel from
> opensuse kotd. Or even Fedora 13, with third-party RPMs.

Why, exactly? I am comfortable with Debian in general. It's just Xen that
I need to become more familiar with (I'm on my way, if just slowly). But if
there is something inherently broken in Debian's Xen I would like to know
of course.

> If you're willing to compile from source, you can use latest Xen and
> pv_ops kernel. See http://wiki.xensource.com/xenwiki/Xen4.0 ,
> tutorials section in particular.

I would rather not, too lazy to manage updates etc.

>> But will I be able to just copy my
>> DomU files (images and configuration) over to the "older" version and
>> still use them?
> Should be possible, regardles of what your dom0 distro is.

OK, thanks. I worried perhaps Xen 4 uses different image formats or
something. It is good to know I have the option of downgrading. I
understand Debian Lenny + Xen 3 is a tried and tested combination that
shouldn'g give me too much trouble.

Meanwhile, to keep my server going I made a little monitoring script that
executes every 5 minutes from cron on the Dom0. It pings the DomU and when
it doesn't get a reply, writes a line to a log file and reboots the whole
machine. Ugly but effective.

Olav Lavell <olav@xxxxxxxxx>

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>