Re: [Xen-users] Centos Dom0 kernel panic on boot

[Arvind Sujeeth <asujeeth@xxxxxxxxxxxxxxxx>]

To follow up, yes /lib/modules is being copied correctly during the 
build. The following SATA/SCSI related modules are being used:
scsi_mod, sd_mod, scsi_transport_sas, mptbase, mptscsih, mptsas, libata, 
sata_nv
For anyone else that might encounter something similar, I have finally 
been able to get it to boot by appending acpi=noirq or acpi=off to the 
kernel parameters in grub. I still get the warnings about the SATA link 
as in the previous serial console log, but it boots anyways and 
everything seems to be ok. So the problem actually appears to have been 
a conflict between the ACPI modules and the hardware. It's possible that 
newer ACPI modules would fix this problem also.
thanks again,
Arvind

Asim wrote:
> Am just curious - did you correctly copy /lib/modules?
>
> -Asim
>
> On 7/18/08, Alexander Hoßdorf <xen-users@xxxxxxxxxxx> wrote:
> > Hi,
> >
> > could you say what modules your sata device is using?
> > if you don't know, then please do "lsmod" with your working centOS
> > kernel and try to guess what module it is.
> >
> > I guess you have to use a newer version of the module needed.
> >
> > Cheers,
> > Alex
> >
> >
> > Arvind Sujeeth schrieb:
> > > hello,
> > >
> > > I am attempting to compile a Dom0 CentOS 5.2 guest from source, using
> > > XenLinux 2.6.18.8 with a Xen 3.2.1 hypervisor. I am able to compile
> > > the Dom0 kernel, but when I attempt to boot into it, I receive the
> > > following messages:
> > >
> > > mount: could not find filesystem '/dev/root'
> > > setuproot: moving /dev failed: No such file or directory
> > > setuproot: error mounting /proc: No such file or directory
> > > setuproot: error mounting /sys: No such file or directory
> > > switchroot: mount failed: No such file or directory
> > > Kernel panic - not syncing: Attempted to kill init!
> > >
> > > As the serial console log attached shows, there is some problem with
> > > the SATA drivers that seems to be preventing the hard disks from being
> > > mounted. I am running this on an HP wx9400 workstation (AMD 64 bit
> > > Opteron, with 2 SATA disks using an on-board RAID controller).
> > >
> > > I have tried several kernel configurations, including the default
> > > XenLinux configuration, a modified version of my native kernel
> > > configuration (with Xen options turned on), and a configuration set
> > > with  'make allmodconfig'. I have tried ramdisks created using just
> > > mkinitrd with no options, and also using `--with=scsi_mod
> > > --with=sd_mod --with=sata_nv` as well as the same thing except using
> > > `--preload=..`
> > >
> > > The one thing that seems suspicious in the XenLinux configuration is
> > > that the SCSI/SATA symbols have different names than the symbols in my
> > > native CentOS kernel that does boot (2.6.18-92). When I try to copy
> > > the native config, I get several warnings about unrecognized symbols,
> > > and have to go manually turn on the SATA drivers in `make menuconfig`.
> > >
> > > If anyone has any insight or suggestions, I really appreciate it.
> > >
> > > thanks,
> > > Arvind
> > >
> > >
> > >
> > >
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