[CentOS] UP vs SMP kernel ?

[Jerry57 (GMail)]

Hello Robert,

  From the sounds of it you have both kernels installed.  Just
  removing it from menu.lst does not uninstall it.
  You must "yum remove kernel-smp"

  To verify that you actually have it installed, try:
  rpm -qa |grep kernel
  (will list all modules installed with kernel in the packagename)
  or
  rpm -qa |grep kernel-smp

  If you have any kernel-smp installed, you can use "yum remove" or
  "rpm -e" to remove them.  Once removed, they shouldn't give you
  problems any longer on the updates.

  jer

Friday, October 28, 2005, 9:33:27 AM, you wrote:

> There was a discussion here several days ago that was precipitated by my
> decision to manually install the new kernel before YUMming the upgrade
> to CentOS 4.2.  The upgrade went south but I recovered by doing a fresh
> install and a bunch of copying from backups. All's well EXCEPT that I'm
> back in the same "box", thanks to anaconda. 

> I set out to upgrade kernels this morning:

> [root at mavis download]# yum update kernel\*
> Setting up Update Process
> Setting up repositories
> dag                       100% |=========================| 1.1 kB   00:00
> update                    100% |=========================|  951 B   00:00
> base                      100% |=========================| 1.1 kB   00:00
> addons                    100% |=========================|  951 B   00:00
> extras                    100% |=========================| 1.1 kB   00:00
> Reading repository metadata in from local files
> Resolving Dependencies
-->> Populating transaction set with selected packages. Please wait.
--->> Downloading header for kernel-hugemem-devel to pack into 
> transaction set.
> kernel-hugemem-devel-2.6. 100% |=========================| 656 kB   00:04
--->> Package kernel-hugemem-devel.i686 0:2.6.9-22.0.1.EL set to be updated
--->> Downloading header for kernel-smp-devel to pack into transaction set.
> kernel-smp-devel-2.6.9-22 100% |=========================| 648 kB   00:04
--->> Package kernel-smp-devel.i686 0:2.6.9-22.0.1.EL set to be updated
--->> Downloading header for kernel-devel to pack into transaction set.
> kernel-devel-2.6.9-22.0.1 100% |=========================| 642 kB   00:04
--->> Package kernel-devel.i686 0:2.6.9-22.0.1.EL set to be installed
--->> Downloading header for kernel to pack into transaction set.
> kernel-2.6.9-22.0.1.EL.i6 100% |=========================| 151 kB   00:00
--->> Package kernel.i686 0:2.6.9-22.0.1.EL set to be installed
--->> Downloading header for kernel-smp to pack into transaction set.
> kernel-smp-2.6.9-22.0.1.E 100% |=========================| 151 kB   00:00
--->> Package kernel-smp.i686 0:2.6.9-22.0.1.EL set to be installed
--->> Downloading header for kernel-doc to pack into transaction set.
> kernel-doc-2.6.9-22.0.1.E 100% |=========================| 123 kB   00:00
--->> Package kernel-doc.noarch 0:2.6.9-22.0.1.EL set to be updated
-->> Running transaction check

> Dependencies Resolved

> =============================================================================
>  Package                 Arch       Version          Repository     Size
> =============================================================================
> Installing:
>  kernel                  i686       2.6.9-22.0.1.EL  update         9.7 M
>  kernel-devel            i686       2.6.9-22.0.1.EL  update         3.6 M
>  kernel-smp              i686       2.6.9-22.0.1.EL  update         9.4 M
> Updating:
>  kernel-doc              noarch     2.6.9-22.0.1.EL  update         2.0 M
>  kernel-hugemem-devel    i686       2.6.9-22.0.1.EL  update         3.6 M
>  kernel-smp-devel        i686       2.6.9-22.0.1.EL  update         3.6 M

> Transaction Summary
> =============================================================================
> Install      3 Package(s)
> Update       3 Package(s)
> Remove       0 Package(s)
> Total download size: 32 M
> Is this ok [y/N]: n
> Exiting on user Command
> Complete!
> You have new mail in /var/spool/mail/root
> [root at mavis download]# rpm -qa | grep kernel
> kernel-smp-devel-2.6.9-22.EL
> kernel-2.6.9-22.EL
> kernel-hugemem-devel-2.6.9-22.EL
> kernel-utils-2.4-13.1.69
> kernel-devel-2.6.9-22.EL
> kernel-doc-2.6.9-22.EL
> kernel-smp-2.6.9-22.EL
> [root at mavis 
> download]#                                                         

> ...and was reminded that anaconda installed both kernels from the CentOS
> 4.2 DVD. 

> I verified that I had, indeed repaired /boot/grub/grub.conf following 
> the install:
> [root at mavis download]# cat /etc/grub.conf
> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this file
> # NOTICE:  You have a /boot partition.  This means that
> #          all kernel and initrd paths are relative to /boot/, eg.
> #          root (hd0,0)
> #          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
> #          initrd /initrd-version.img
> #boot=/dev/hdb
> default=0
> timeout=5
> splashimage=(hd0,0)/grub/splash.xpm.gz
> #hiddenmenu
> title CentOS-4 i386-up (2.6.9-22.EL)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.9-22.EL ro root=/dev/VolGroup00/LogVol00
>         initrd /initrd-2.6.9-22.EL.img
> You have new mail in /var/spool/mail/root

> Then, I proceeded with the kernel upgrade and checked grub.conf again

> [root at mavis download]# cat /etc/grub.conf
> # grub.conf generated by anaconda
> #
> # Note that you do not have to rerun grub after making changes to this file
> # NOTICE:  You have a /boot partition.  This means that
> #          all kernel and initrd paths are relative to /boot/, eg.
> #          root (hd0,0)
> #          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
> #          initrd /initrd-version.img
> #boot=/dev/hdb
> default=0
> timeout=5
> splashimage=(hd0,0)/grub/splash.xpm.gz
> #hiddenmenu
> title CentOS (2.6.9-22.0.1.ELsmp)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.9-22.0.1.ELsmp ro root=/dev/VolGroup00/LogVol00
>         initrd /initrd-2.6.9-22.0.1.ELsmp.img
> title CentOS (2.6.9-22.0.1.EL)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.9-22.0.1.EL ro root=/dev/VolGroup00/LogVol00
>         initrd /initrd-2.6.9-22.0.1.EL.img
> title CentOS-4 i386-up (2.6.9-22.EL)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.9-22.EL ro root=/dev/VolGroup00/LogVol00
>         initrd /initrd-2.6.9-22.EL.img
> You have new mail in /var/spool/mail/root
> [root at mavis download]#                                             

> To find that the ^%#$@ smp kernel is once more the default! 

> And THAT is why this automagic stuff sometimes scares hell outta me.

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