Re: [Xen-users] Problem after running upgrade

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Stephen Liu wrote:

> domU
> after running
> # aptitude update
>
> # aptitude upgrade
> ....
> 1)
> A new version of configuration file /etc/clamav/clamd.conf is
> available,
> but your version has been locally modified.
>
> install the package maintainer's version
> ...
> ...
> 2)
> A new version of configuration file /etc/clamav/freshclam.conf is
> available, but your version has been locally modified.
>
> install the package maintainer's version
That's not a Xen issue.



> It was also noticing that
>
> On domU
> # xm list
>
> Name                     ID   Mem VCPUs      State   Time(s)
> Domain-0                 0  3417     2       r-----  10635.8
> xen12.satimis.com        2    32     1       r-----    240.0
>
>
> The number "240.0" corresponding to "xen12.satimis.com" changed rapidly
> on next run of "xm list".  The HD LED flashed.
>
>
> Please advise where to check the cause and how to fix the problem.  TIA
>
>
> Remark:
> Actually domU only starts.  It is not doing any work.  However the mail
> server can work to send/receive mails.
What happens if you connect to the console of the guest ? The 
symptoms you describe are not Xen specific, but are general to a 
class of problems where a program/process has 'gone wrong' and is 
doing something that consumes all resources. Diagnosis is the same as 
it would be on standalone machine.
Last time it happened to me was while I was installing MythTV. At 
some point I got the config wrong and it continuously tried to start 
a process which failed - consumed all cpu and lots of disk activity 
as it logged each failed attempt.
Log into your guest (either via SSH or the Xen console) and take a 
look at what it's doing - is there a process taking lots of CPU ? Is 
there a log file growing quickly ?
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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