Re: [Xen-users] Accessing console for Xen 4.0 with 2.6.31 pvops kernel on Dell Poweredge R610

[Adit Ranadive <adit.262@xxxxxxxxx>]

The nomodeset parameter didnt work either. One thing I didnt mention was that I could see the Xen bootup messages before and now but cannot see the linux boot up messages. Is there anything I need to enable in the linux config for the console to be visible? 

There maybe something funky with what the pvops kernel is doing versus the older pv kernel since I can see the messages for the older one.
Serial isnt an option since the machine is not physically accessible to me.

Thanks,
Adit

On Tue, Jul 20, 2010 at 8:24 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

On Sun, Jul 18, 2010 at 08:43:40PM -0400, Adit Ranadive wrote:
>    I am currently using a Dell PowerEdge server R610 with Xen 4.0 installed
>    and the 2.6.31.13 pvops kernel.
>    I am accessing the server console using the iDRAC KVM feature of the dell
>    management console.
>    Does anyone know how to configure the console option in the grub menu so
>    that all the boot messages can be seen on the
>    mgmt console?
>    Currently I can view only the Xen bootup messages if I dont specify the
>    console=xxx option on the kernel line. I cant see any of
>    the linux kernel boot up messages. Specifying console=xxx on the kernel
>    module line doesnt work either.
>    Has anyone worked with this sort of config before? Is there anything else
>    I can specify on the kernel/module line so that all
>    the bootup messages are visible?
>
>    Below is my grub menu:
>    title Red Hat Enterprise Linux Server (2.6.18-164.6.1.el5)
>        root (hd0,0)
>        kernel /vmlinuz-2.6.18-164.6.1.el5 ro root=/dev/vg1/root
>        initrd /initrd-2.6.18-164.6.1.el5.img
>
>    title Xen 4.0 - Linux 2.6.31.13 pvops
>        root (hd0,0)
>        kernel /xen.gz noreboot loglvl=all guest_loglvl=all iommu=1
>        module /vmlinuz-2.6.31.13 ro root=/dev/vg1/root loglevel=10 swiotlb=force earlyprintk=xen console=hvc0
>        module /initrd-2.6.31.13.img
>

That should work. You could try adding "nomodeset" parameter, to disable the kernel modesetting (KMS) stuff.
Maybe that messes up the console.

You could also enable the SOL serial console:
http://wiki.xensource.com/xenwiki/XenSerialConsole

-- Pasi

>    title Xen 4.0 - Linux 2.6.18.8
>        root (hd0,0)
>        kernel /xen.gz loglvl=all guest_loglvl=all
>        module /vmlinuz-2.6.18.8-xen0 ro root=/dev/vg1/root earlyprintk=xen
>        module /initrd-2.6.18.8-xen0.img
>
>    P.S.: Ive tried using the 2.6.18.8 kernel and that seems to show
>    everything fine on the console.
>
>    Thanks,
>    Adit

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