[CentOS] how long to reboot server ?

[Les Mikesell]

On 9/3/2010 12:34 PM, Matthew Miller wrote:
> On Fri, Sep 03, 2010 at 12:17:37PM -0500, Les Mikesell wrote:
>> Does anyone know if this is special-cased or some config setting?  I
>
> It's special-cased.
>
>> 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.
>
> You can configure the number to keep to be very large, if you want.

I didn't particularly care about keeping the new ones that didn't boot, 
so special-casing would be the right thing - just harder to be sure that 
the default hasn't changed as you update than a config option would be.

-- 
   Les Mikesell
    lesmikesell at gmail.com