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Re: [Xen-users] Xen PV warning messages on boot

Don't have any concerns regarding the clock, those messages just mean
that the system was expecting a hardware clock and it didn't find one because
of the way xen works with that.

Another think you should look at is the sysctl setting called
which is set to 0 by default and if you change it to 1 you're able to adjust the
time independently in the domu. This may get you rid of the clock messages you

On Mon, Feb 20, 2012 at 00:56, Phil Quesinberry <philq@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

I'm trying to get a PV instance of CentOS 5.7 running on XCP.  I have 5.7
running in HVM mode on another box and it works fine but I would like to
maximize the VM's performance.

It ultimately boots up ok (without graphics) but starts out with the
following warnings:

rtc: IRQ 8 is not free
rtc: IRQ 8 is not free
i8042.c: No controller found.
Red Hat nash version starting
 Reading all physical volumes.  This may take a while...
 Found volume group "VolGroup00" using metadata type lvm2
 2 logical volume(s) in volume group "VolGroup00" now active
               Welcome to CentOS release 5.7 (Final)
               Press 'I' to enter interactive startup.
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access
Setting clock (utc): Sun Feb........... and so on

Hardware is a Dell T610.  Is this normal, or does it mean that the VT-d is
not working on the hardware or something?  Apparently I'll need to configure
VNC to access a graphical console, which is fine.

Any way to eliminate these warning messages or should I not have any
concerns about running a server in this environment?

Many thanks,

Phil Quesinberry
Q Systems Engineering, Inc.
Electronic Controls and Embedded Systems Development
(410) 969-8002

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