Re[2]: Unable to Configure Xen Dom 0 in Jeremy's PVOPS Kernel

[Sander Eikelenboom <linux@eikelenboom.it>]

Hello Teo,

And perhaps try to create the domain with the -c option ...
"xm create -c path_to_domain_cfg" could shed some light ...
(ctrl-] to return to dom0 console)

Regards,

Sander

Thursday, July 23, 2009, 6:13:02 PM, you wrote:

> Hi!!!

> I have managed to install CentOS 4.7 paravirtualized guest on Xen Dom 0 
> Jeremy Fitzhardinge's pv_ops kernel successfully. Please see screenshots 
> here: 
> http://teo-en-ming-aka-zhang-enming.blogspot.com/2009/07/creating-centos-47-32-bit.html

> However, after installation of CentOS 4.7 PV, I can't start the guest 
> domain.

> I have tried to mount/access the CentOS 4.7 guest disk image file and found
> out that xenU (xen-aware) kernel and initial ramdisk images were installed.
> PV Guest GRUB was also configured to boot the xenU kernel. Please see 
> screenshot: 
> http://1.bp.blogspot.com/_zzjv8MCM2sk/SmiMcYsFzAI/AAAAAAAAACk/rYxOFDHuD00/s1600-h/xen18.jpeg

> My CentOS 4.7 PV guest domain configuration is as follows:  
> http://3.bp.blogspot.com/_zzjv8MCM2sk/SmiMcrnOfEI/AAAAAAAAACs/s-xguFnf25U/s1600-h/xen19.jpeg

> Any idea why I can't start the CentOS 4.7 PV guest after installation? Is 
> the guest domain configuration correct/sufficient? Please advise.

> Thank you!!!

> 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 Phone: +65-9648-9798
>   
> MSN: teoenming@hotmail.com


> -----Original Message-----

> From: "Teo En Ming" <enming.teo@asiasoftsea.net>

> To: "Pasi Kärkkäinen" <pasik@iki.fi>

> Cc: xen-devel@lists.xensource.com, jeremy.fitzhardinge@citrix.com

> Date: Thu, 23 Jul 2009 19:52:23 +0800

> Subject: Re: [Xen-devel] Unable to Configure Xen Dom 0 in Jeremy's PVOPS 
> Kernel




> Dear Pasi,



> Thank you!!!



> I am now creating a virtual harddisk for my Xen virtual machine. 
> Creating a 146 GB virtual harddisk:



> # dd if=/dev/zero of=/home/enming/ga-nfs.img bs=1M count=149504



> I am going to run CentOS 4.7 32-bit linux on it!

> 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 Phone: +65-9648-9798
>   
> MSN: teoenming@hotmail.com



> -----Original 
> Message-----
>   
>  From: Pasi Kärkkäinen <pasik@iki.fi>
>   
>  To: Teo En Ming <enming.teo@asiasoftsea.net>
>   
>  Cc: xen-devel@lists.xensource.com, jeremy.fitzhardinge@citrix.com
>   
>  Date: Thu, 23 Jul 2009 13:41:28 +0300
>   
>  Subject: Re: [Xen-devel] Unable to Configure Xen Dom 0 in Jeremy's 
> PVOPS Kernel
>   

>   

>   
> On Thu, Jul 23, 
> 2009 at 06:25:33PM +0800, Teo En Ming wrote:
>     
 >> Dear Pasi,
>     
 >>
>     
 >> I ran "mount /proc/xen" manually *after* the system booted 
> up, it read
>     
 >> /etc/fstab, and mounted /proc/xen successfully!!!
>     
 >>
>     
 >> Please see the last line of the following "mount" output:
>     
 >>
>     
 >> /dev/sda2 on / type ext3 (rw,acl,user_xattr)
>     
 >> /proc on /proc type proc (rw)
>     
 >> sysfs on /sys type sysfs (rw)
>     
 >> debugfs on /sys/kernel/debug type debugfs (rw)
>     
 >> udev on /dev type tmpfs (rw)
>     
 >> devpts on /dev/pts type devpts (rw,mode=0620,gid=5)
>     
 >> /dev/sda3 on /home type ext3 (rw,acl,user_xattr)
>     
 >> fusectl on /sys/fs/fuse/connections type fusectl (rw)
>     
 >> none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
>     
 >> gvfs-fuse-daemon on /home/enming/.gvfs type 
> fuse.gvfs-fuse-daemon
>     
 >> (rw,nosuid,nodev,user=enming)
>     
 >> none on /proc/xen type xenfs (rw)
>     
 >>
>     

>     
>  Yep, now it's mounted :)
>     

>     
 >> It is very strange that the system did not mount /proc/xen 
> automatically as
>     
 >> indicated in /etc/fstab during bootup.
>     
 >>
>     

>     
>  Indeed.
>     

>     
 >> Now I am able to start xend daemon. Please see
>     
 >> 
> http://2.bp.blogspot.com/_zzjv8MCM2sk/Smg7pKoH_JI/AAAAAAAAABU/TVkqEEyLzYQ/s1600-h/xen08.jpeg
> [http://2.bp.blogspot.com/_zzjv8MCM2sk/Smg7pKoH_JI/AAAAAAAAABU/TVkqEEyLzYQ/s1600-h/xen08.jpeg]

>     
 >>
>     
 >> And I can see domain 0 using the "xm list" command already!
>     
 >>
>     

>     
>  Congrats! :)
>     

>     
 >> Any ideas how to make /proc/xen automatically mounted while 
> booting? I
>     
 >> thought I already have the xenfs entry in /etc/fstab.
>     
 >>
>     
 >> /dev/disk/by-id/ata-ST3320620AS_9QF97Q42-part1 swap   
>               swap    
>     
 >>   defaults             
>  0 0
>     
 >> /dev/disk/by-id/ata-ST3320620AS_9QF97Q42-part2 /   
>                  ext3   
>  
>     
 >>   acl,user_xattr        1 1
>     
 >> /dev/disk/by-id/ata-ST3320620AS_9QF97Q42-part3 /home   
>              ext3    
>     
 >>   acl,user_xattr        1 2
>     
 >> proc                 
> /proc                proc   
>     defaults              0
>     
 >> 0
>     
 >> sysfs               
>  /sys                 sysfs 
>      noauto               
>  0
>     
 >> 0
>     
 >> debugfs             
>  /sys/kernel/debug    debugfs    noauto   
>              0
>     
 >> 0
>     
 >> devpts               
> /dev/pts             devpts     
> mode=0620,gid=5       0
>     
 >> 0
>     
 >> none                 
> /proc/xen            xenfs     
>  defaults              0
>     
 >> 0
>     
 >>
>     
 >> Seems the initscripts did not attempt to mount /proc/xen 
> during system
>     
 >> startup.
>     
 >>
>     

>     
>  That's weird.. it should be mounted automatically when it's in 
> fstab.
>     
>  Maybe it's because sysfs /sys is 'noauto'? Try to change that to 
> 'defaults'.
>     

>     
 >> Or should I put "mount /proc/xen" in /etc/rc.local?
>     
 >>
>     

>     
>  That shouldn't be necessary.
>     

>     
>  -- Pasi
>     

>     
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>     
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>     
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>     
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-- 
Best regards,
 Sander                            mailto:linux@eikelenboom.it