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@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@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@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@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@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@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.
