CentOS - May 2007 - Centos kernel does not boot, redhat does (i2o raid controller problem)

Hi,

following system:
Dell PE2650, 2 2.4ghz Xeon, 1gb ram, Dell Perc4DC Controller

It has EL5 installed, but I wanted to change to Centos because of the 
missing workstation packages in the entry server repository.

The system was redhat up2date until yesterday, so the latest kernel was 
missing.
I changed redhat-release to centos-release packages and the new centos 
kernel was installed the via yum.

This kernel does not boot.

Error messages:
i20:iop0: Get status timeout
i20:iop0: Reset timeout
i20:iop0: could not reset controller
i20:iop0: Reset timeout
kernel panic

Here are my findings when setting emulation in scsi adapter bios to i2o:

- initial redhat el5 install fails, no adapter found (mayby centos 
install is affected, too, have to set to 'mass storage' to install)
- redhat's kernel-2.6.18-8.1.1.el5 and kernel-2.6.18-8.1.3.el5 boot with 
i20 enabled
- centos latest 2.6.18-8.1.3.el5 does not! error messages above
- setting to 'mass storage' all is fine

Is this really a centos kernel problem (I read in centos kernel 
changelog about special centos changes), or is this for any reason 
because this is actually a redhat system?

Thx
Rainer

On Wed, 2007-05-02 at 11:58 +0200, Rainer Traut wrote:
> Hi,
> 
> following system:
> Dell PE2650, 2 2.4ghz Xeon, 1gb ram, Dell Perc4DC Controller
> 
> It has EL5 installed, but I wanted to change to Centos because of the 
> missing workstation packages in the entry server repository.
> 
> The system was redhat up2date until yesterday, so the latest kernel was 
> missing.
> I changed redhat-release to centos-release packages and the new centos 
> kernel was installed the via yum.
> 
> This kernel does not boot.
> 
> Error messages:
> i20:iop0: Get status timeout
> i20:iop0: Reset timeout
> i20:iop0: could not reset controller
> i20:iop0: Reset timeout
> kernel panic
> 
> Here are my findings when setting emulation in scsi adapter bios to i2o:
> 
> - initial redhat el5 install fails, no adapter found (mayby centos 
> install is affected, too, have to set to 'mass storage' to install)
> - redhat's kernel-2.6.18-8.1.1.el5 and kernel-2.6.18-8.1.3.el5 boot
with
> i20 enabled
> - centos latest 2.6.18-8.1.3.el5 does not! error messages above
> - setting to 'mass storage' all is fine
> 
> Is this really a centos kernel problem (I read in centos kernel 
> changelog about special centos changes), or is this for any reason 
> because this is actually a redhat system?
We built the kernel as they released it ... the only change SHOULD be
the way the kernel modules are signed.

Thanks,
Johnny Hughes
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Rainer Traut wrote:
> - initial redhat el5 install fails, no adapter found (mayby centos
> install is affected, too, have to set to 'mass storage' to install)
> - redhat's kernel-2.6.18-8.1.1.el5 and kernel-2.6.18-8.1.3.el5 boot
with
> i20 enabled
> - centos latest 2.6.18-8.1.3.el5 does not! error messages above
> - setting to 'mass storage' all is fine
> 
> Is this really a centos kernel problem (I read in centos kernel
> changelog about special centos changes), or is this for any reason
> because this is actually a redhat system?
I get a perfect binary match in the redhat and the centos kernels, so I
am going to assume this is a site specific issue on your machine not
really related to the centos kernel, unless someone else is also able to
confirm this issue.

- KB