RE: [Xen-users] 3.4-testing : Kernel panic on bootup (mount: couldnotfind filesystem /dev/root/)

["Madhu Venugopal (vmadhu)" <vmadhu@xxxxxxxxx>]

Hi Robbie,

Thanks for your response.
I tried all forms... but none of them worked :-(

The Only other Grub config I have is as follows and the XEN Grub config
follows this approach.

<grub>
title CentOS (2.6.18-128.el5PAE)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-128.el5PAE ro root=LABEL=/1 rhgb quiet
        initrd /initrd-2.6.18-128.el5PAE.img
<grub>

As I mentioned, I tried the physical /dev locations as well, but that 
didn't help... But never tried "/". I can give that a shot today.

Any other suggestions (or) possible problems ?

FYI, the GRUB config that I posted worked fine on another system with
Similar installation for 1 of my colleagues.

-Madhu

> -----Original Message-----
> From: Robbie Garrett [mailto:rgarrett@xxxxxxxxxxxxxx]
> Sent: Wednesday, August 26, 2009 6:11 AM
> To: Madhu Venugopal (vmadhu); 'Xen User-List'
> Subject: RE: [Xen-users] 3.4-testing : Kernel panic on bootup (mount:
> couldnotfind filesystem /dev/root/)
> 
> Look at your grub config.
> 
> Root=/LABEL=/ looks way wrong.
> 
> It should point to something in the /dev directory.
> 
> In my case my hard drive that has the / file system on it is /dev/sdc1
> 
> Look at your other grub configs for your other WORKING kernels and
make
> the
> root=/ section of your grub config the same as what those kernels
read.
> 
> 
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Madhu
> Venugopal
> (vmadhu)
> Sent: Wednesday, August 26, 2009 9:03 AM
> To: Xen User-List
> Subject: RE: [Xen-users] 3.4-testing : Kernel panic on bootup (mount:
> couldnotfind filesystem /dev/root/)
> 
> Anyone ?
> I searched the forums, but couldn't find a solution to the problem am
> facing.
> 
> -Madhu
> 
> > -----Original Message-----
> > From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
> > bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Madhu Venugopal (vmadhu)
> > Sent: Tuesday, August 25, 2009 3:43 PM
> > To: Xen User-List
> > Subject: [Xen-users] 3.4-testing : Kernel panic on bootup (mount:
> could
> > notfind filesystem /dev/root/)
> >
> > Hi,
> >
> > I installed XEN 3.4-testing version without much problems in CentOS
> 5.3
> > running on quadcore Intel Nahelam processors using the following
> > installation
> > steps (as in the README) :
> >
> > <steps>
> > hg clone http://xenbits.xensource.com/xen-3.4-testing.hg`
> > cd xen-unstable.hg
> > make world
> > make install
> > make linux-2.6-xen-config CONFIGMODE=menuconfig
> > make linux-2.6-xen-build
> > make linux-2.6-xen-install
> > depmod 2.6.18.8-xen
> > mkinitrd -v -f --with=ahci --with=sd_mod --with=scsi_mod --allow-
> > missing
> > initrd-2.6.18-xen.img 2.6.18.8-xen
> > cp initrd-2.6.18-xen.img /boot
> > </steps>
> >
> > After the installation, I updated the grub with the following entry
:
> >
> > <grub.conf>
> > title  Xen 3.4.2
> >         root (hd0,0)
> >         kernel /xen.gz loglvl=all guest_loglvl=all vtd=1 iommu=1
> >         module /vmlinuz-2.6.18.8-xen root=LABEL=/ apic=debug
> maxcpus=8
> >         module /initrd-2.6.18-xen.img
> > <grub.conf>
> > But during the bootup, I see Kernel panic with the only error above
> > that
> > being :
> >
> > <error>
> > mount: could not find filesystem /dev/root/
> > setuproot: moving /dev failed: No such file or Directory
> > no fstub.sys, mounting internal defaults
> > setuproot: error mounting /proc:No such file or directory
> > </error>
> >
> > Is it an error in partition ? or a Grub entry error ?
> > Or an installation error ?
> >
> > Can someone help me ?
> >
> > Thanks,
> > Madhu
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> 
> _______________________________________________
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> 
> 


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