Re: Xen Paravirt Operations Domain 0 Serial Console Problem

["Mr. Teo En Ming (Zhang Enming)" <enming.teo@asiasoftsea.net>]

Dear Pasi,

Thanks for your help! It works!

I wonder why this didn't work:

title Fedora (2.6.31-rc6-enming.teo) Serial Console
         root (hd0,0)
         kernel /xen.gz iommu=1 com1=115200,8n1 console=com1
         module /vmlinuz-2.6.31-rc6-enming.teo ro
root=/dev/mapper/vg_fedora11_host-lv_root selinux=0 console=ttyS0,115200
         module /initrd-2.6.31-rc6-enming.teo.img

And this worked:

title pv_ops dom0-test (2.6.29-rc7-tip) with serial console
         root (hd0,0)
         kernel /xen-3.3.gz dom0_mem=1024M loglvl=all guest_loglvl=all com1=19200,8n1 console=com1
         module /vmlinuz-2.6.29-rc7-tip ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen
         module /initrd-2.6.29-rc7-tip.img

Anyway, I still got a tty1 output! I thought that after using serial console, it is not supposed to output to a monitor anymore?

As a result of this, I still can't hide the VGA card from dom 0 and pass it through to the Windows Dom U.

Any ideas?

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@hotmail.com
Alma Maters: Singapore Polytechnic, National University of Singapore



On 08/25/2009 12:44 AM, Pasi Kärkkäinen wrote:
> On Tue, Aug 25, 2009 at 12:17:53AM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
>    
>> Hi All,
>>
>> I have tried to configure serial console for Xen hypervisor, dom 0
>> kernel and Linux login but it does not seem to be working.
>>
>> Here is my grub configuration for serial console:
>>
>> title Fedora (2.6.31-rc6-enming.teo) Serial Console
>>          root (hd0,0)
>>          kernel /xen.gz iommu=1 com1=115200,8n1 console=com1
>>          module /vmlinuz-2.6.31-rc6-enming.teo ro
>> root=/dev/mapper/vg_fedora11_host-lv_root selinux=0 console=ttyS0,115200
>>          module /initrd-2.6.31-rc6-enming.teo.img
>>
>>      
> http://wiki.xensource.com/xenwiki/XenParavirtOps
>
> paste from that page:
>
>
> Working example grub.conf with serial console output:
>
> title pv_ops dom0-test (2.6.29-rc7-tip) with serial console
>          root (hd0,0)
>          kernel /xen-3.3.gz dom0_mem=1024M loglvl=all guest_loglvl=all com1=19200,8n1 console=com1
>          module /vmlinuz-2.6.29-rc7-tip ro root=/dev/vg00/lv01 console=hvc0 earlyprintk=xen
>          module /initrd-2.6.29-rc7-tip.img
>
>
>    
>> Is the above configuration correct? On my Intel Desktop Board DQ45CB, I
>> have a COM1 header on the PCB and I have connected an external serial
>> port to this header and also enabled COM1 in the BIOS.
>>
>> After selecting the above entry in GRUB still on VGA, a cursor at the
>> top left corner of the monitor shows up, which means Xen and Dom 0
>> kernel are booting up on the serial console and not on VGA.
>>
>> However, after some time, a login prompt finally displays on my VGA
>> monitor! Isn't it NOT supposed to show up on VGA and should show up in
>> serial console instead?
>>
>>      
> You also need to have the gettys configured properly.
>
> -- Pasi
>