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Re: [Xen-users] Scheduled maintenance?

To: "Xen List" <xen-users@xxxxxxxxxxxxxxxxxxx>, "James Pifer" <jep@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Scheduled maintenance?
From: "Nick Couchman" <Nick.Couchman@xxxxxxxxx>
Date: Thu, 04 Jun 2009 06:28:55 -0600
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Scheduling maintenance is always a good idea, and if you have multiple Xen boxes that share the same storage, you should be able to live-migrate your domUs over to another server temporarily, then run updates and bounce your server, then migrate them back.  That's one of the really nice things about Xen - maintenance to the underlying physical system should be transparent.  Obviously this doesn't always work perfectly, but most of them time it should.
 
I run SLES10 SP2, as well, and, although I periodically run into issues, they don't seem to be consistent or regular issues - I've had my systems up for longer than 60 days at a time and haven't had any issues.  I occasionally use the above method for maintaining them, though, so they get updated and rebooted every couple of months.
 
-Nick

>>> On 2009/06/04 at 06:20, James Pifer <jep@xxxxxxxxxxxxxxxx> 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.

Thanks,
James






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