[CentOS] boot failure after install

[Peter Farrow]

Hi Johnny,

would you share that script with me possibly?

P.


Johnny Hughes wrote:

>On Wed, 2005-06-29 at 08:30 -0500, Johnny Hughes wrote:
>  
>
>>On Wed, 2005-06-29 at 08:26 -0500, Johnny Hughes wrote:
>>    
>>
>>>On Wed, 2005-06-29 at 14:02 +0100, Stephen Westrip wrote:
>>>      
>>>
>>>>Dear P.,
>>>>
>>>>Yes, this has happened EVERY time I have installed CentOS 4.0 (the only 
>>>>version I have ever installed). I also boot up into rescue mode and then 
>>>>issue just one grub command,
>>>>
>>>>grub-install /dev/i2o/hda (or whatever your device is called)
>>>>
>>>>This fixes the problem permanently.
>>>>
>>>>
>>>>Stephen Westrip
>>>>MetaFour
>>>>
>>>>
>>>>
>>>>
>>>>Peter Farrow wrote:
>>>>
>>>>        
>>>>
>>>>>Dear All,
>>>>>
>>>>>I have recently had a bad experiences with Centos 4.0 and 4.1 when 
>>>>>installing onto mirrored IDE drives using software mirror.
>>>>>
>>>>>The install goes through ok, but when the system comes to reboot, it 
>>>>>seems the boot loader fails.  I've seen fail on the first reboot or 
>>>>>after a random number of reboots, across different hardware as wide 
>>>>>and varied as you can get, the common factor is software raid, 
>>>>>(mirrored drives).
>>>>>
>>>>>It either fails just displaying "GRUB" or fails with a flashing cursor 
>>>>>at the bootup time.
>>>>>
>>>>>Booting a rescue cd, doing a chroot /mnt/sysimage and then the 
>>>>>following grub commands fixes the issue permanently, so that it never 
>>>>>fails again,
>>>>>
>>>>>grub
>>>>>
>>>>>grub-> root (hd0,0)
>>>>>grub-> setup (hd0)
>>>>>grup-> root (hd1,0)
>>>>>grub-> setup (hd1)
>>>>>grub-> quit
>>>>>
>>>>>it seems to me the Anaconda installer doesn't do something quite right 
>>>>>which leads to this random style failure.  Its only random as to when 
>>>>>it will do it, unless you do this, it will do it at some point.....
>>>>>
>>>>>I've been doing Redhat for many years and never seen this problem 
>>>>>before......anybody else seen this
>>>>>
>>>>>P.
>>>>>
>>>>>          
>>>>>
>>>Just so you don't think this is a CentOS only issue:
>>>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149587
>>>
>>>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=149064
>>>
>>>Also ...
>>>
>>>Grub does not write to the mirror drive ... which can cause issues.  It
>>>is recommended that you do a grub install (or Peter's solution) on both
>>>drives on your first reboot after a software mirror install. (Or put
>>>something in your ks file to do it post isntall for kickstart).
>>>      
>>>
>>Also ... this isn't always a problem on all hardware during a normal
>>boot, but it is always a problem on any hardware if you boot from the
>>raid mirror drive.  So fixing it prior to placing the Raid machine into
>>service is a good thing.
>>    
>>
>
>And one last thing :) ... 
>
>I normally do not software raid my boot partition ... I will create a
>separate partition on both drives, do grub install, and mount one
>as /boot2 ... then write a script to keep the partition rsynced with the
>main /boot partition.
>
>That is just how I do it ... and it works for Raid1 or Raid5 :) 
>  
>
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