[Box Backup] "make test" reports error

[Chris Wilson]

Hi Stefan,

On Thu, 22 Jan 2009, 67348294@cox.net wrote:

>> Are you sure this isn't a custom kernel? louisa.home.local looks 
>> suspicious. Could you get info on the RPM that it came from to get the 
>> vendor and build host?
>
> This is the one that works with the "make test".
>
> I think that this is the standard centos SMP (i.e. multi processor) 
> kernel that we got when we installed centos. This is the RPM info:
>
> ===========
> rpm -q kernel-smp-2.6.9-22.EL -i
>
> Name        : kernel-smp                   Relocations: (not relocatable)
> Version     : 2.6.9                             Vendor: CentOS
> Release     : 22.EL                         Build Date: Sat 08 Oct 2005 08:01:51 PM PDT
> Install Date: Thu 02 Feb 2006 04:52:45 PM PST      Build Host: louisa.home.local
> Group       : System Environment/Kernel     Source RPM: kernel-2.6.9-22.EL.src.rpm
> Size        : 27302996                         License: GPLv2
> Signature   : DSA/SHA1, Sun 09 Oct 2005 03:45:51 AM PDT, Key ID a53d0bab443e1821
> Packager    : Johnny Hughes <johnny@centos.org>
> Summary     : The Linux kernel compiled for SMP machines.
> Description :
> This package includes a SMP version of the Linux kernel. It is
> required only on machines with two or more CPUs as well as machines with
> hyperthreading technology.
>
> Install the kernel-smp package if your machine uses two or more CPUs.
> ===========
>
> Does that help?

Yes, that key ID appears to be a widely used one, and I assume that the 
RPM signature was correct or there would have been complaints, so I'll 
ignore the unusual build host for now.

>>> Linux version 2.6.9-22.0.2.EL (buildcentos@build-i386) (gcc version
>>> 3.4.5 20051201 (Red Hat 3.4.5-2)) #1 Tue Jan 17 06:51:40 CST 2006
>>
>> This is what I expect from a stock Centos kernel.
>
> This is the one that does not work with "make test".
>
>> Are they exactly the same version of centos with all updates applied?
>
> No. We are "bad" and only install the version that is current at the 
> install time and then leave it alone.

Please could you provide the output of "rpm -qa" on both machines?

>> Would it be at all possible for you to try running the SMP kernel on the
>> non-SMP system or vice versa? It should work fine, the only disadvantage
>> would be that you can't use the second processor with a non-SMP kernel.
>
> I understand what you want, but I have absolutely no idea how to achieve 
> it in detail. We don't know how to juggle kernels. Sorry. If you can 
> provide details, we can do it.

You should be able to use "apt-get" or "yum" to install a specific kernel 
version on the other machine, without removing your existing one. You 
should then have a choice of which kernel to boot at boot time. For 
example, to install the 2.6.9-22.0.2.EL kernel on the SMP host, the 
following yum command should work, but I'm not a yum user:

 	yum install kernel-2.6.9-22.0.2.EL

and vice versa:

 	yum install kernel-smp-2.6.9-22.EL

Cheers, Chris.
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