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Re: [Xen-users] Scheduled maintenance?

To: James Harper <james.harper@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Scheduled maintenance?
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Fri, 5 Jun 2009 10:50:54 +0300
Cc: James Pifer <jep@xxxxxxxxxxxxxxxx>, Xen List <xen-users@xxxxxxxxxxxxxxxxxxx>
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On Fri, Jun 05, 2009 at 11:28:09AM +1000, James Harper wrote:
> > 
> > I'm running xen on SLES10SP2. It's been much more stable than SP1, but
> I
> > still occasionally have issues.
> > 
> > For example, one of my servers (8 CPU/32GB RAM) has five sles pv domUs
> > and five fully virtualized windows 2k3 domUs. It had been up for
> almost
> > 60 days. Yesterday afternoon one of the sles domU's stopped
> responding.
> > I went to check on it and I couldn't using virt-manager and xm list
> > would hang. I ended up having to restart the server, which is
> obviously
> > a pain.
> > 
> > Should I have scheduled maintenance to bounce dom0 once a month? This
> > would probably save myself the headaches of the occasional problem.
> Just
> > wondering what others are doing.
> > 
> I haven't found the need to reboot my xen servers for any reason other
> than security updates.
> One had an uptime over 6 months (until a datacenter operator hit the
> power button on my server by mistake) and another one has been up for
> similar times.
> The only problem I have had was on a test machine - once the domain id
> got up to 2000 or so (very frequent stopping and starting of domains to
> test migrations etc) it seemed to run out of resources. I haven't seen
> that with 3.3.x though.

I have Xen 3.x servers that have been running for years, no problems. 

I still even have a server running Xen 2.0, I think it has uptime of around
3 years now.. running a couple of domUs. It was rebooted around 3 years ago
because of a fan failure :)

-- Pasi

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