On 9/3/2010 12:09 PM, Marko Vojinovic wrote:
On Friday, September 03, 2010 16:23:31 Les Mikesell wrote:
On 9/3/2010 10:07 AM, Keith Roberts wrote:
On Fri, 3 Sep 2010, Joseph L. Casale wrote:
To: 'CentOS mailing list'centos@centos.org From: Joseph L. Casalejcasale@activenetwerx.com Subject: Re: [CentOS] how long to reboot server ?
My reboot times are regular, (still on F12 on this machine) but I always copy the kernel files into a subdir 'tmp-backups' so I can get them back if needed, even if yum deletes them.
Huh, ok... What do you do with *just* the kernel? Let me know how that works if you ever want to boot from it? Possibly the rpm might make more sense?
Yes, considering the number of *.ko modules that are built against a particular kernel version :)
Don't they get their own directory that you can preserve in a copy? I've never had yum remove the running kernel, so never had to deal with it, but always assumed that you'd be able to boot the install disk in rescue mode, let it mount the filesystems, chroot, and then be able to tell yum to install the kernel version you need. Shouldn't that work?
AFAIK yum never removes the currently running kernel, at least not in default configuration.
Does anyone know if this is special-cased or some config setting? I recall in FC5 having a an IBM 225 that ran OK with the initial kernels but at some update would not boot the new one and many subsequent versions. I think there were more failing kernels than the number configured to keep but I was always able to recover by selecting the old working version in the grub boot menu so it looked like it was a special case. Eventually I did a bios update on the machine which let the new kernels run but broke the older ones.