[CentOS] Still won't boot - Re: remote yum update aborted with session closing - won't boot

Wed Jul 2 14:25:19 UTC 2014
Robert Moskowitz <rgm at htt-consult.com>

On 07/02/2014 10:20 AM, Robert Moskowitz wrote:
> On 07/02/2014 09:35 AM, Reindl Harald wrote:
>> Am 02.07.2014 15:19, schrieb Robert Moskowitz:
>>> On 07/02/2014 08:41 AM, Reindl Harald wrote:
>>>> Am 02.07.2014 14:32, schrieb Robert Moskowitz:
>>>>> On 07/01/2014 06:25 PM, Frank Cox wrote:
>>>>>> On Tue, 01 Jul 2014 18:19:32 -0400
>>>>>> Robert Moskowitz wrote:
>>>>>>
>>>>>>> How do I trouble shoot this?  I am assuming that I only got a partially
>>>>>>> completed update.
>>>>>> Try yum-complete-transaction and see what happens.
>>>>> Well it looks like all the updates 'took'  /etc/redhat-release now
>>>>> reports ver 6.5.
>>>>>
>>>>> But still getting a kernel panic and boot failing.  I can fall back to
>>>>> the prior kernel and it will boot.  So I tried to copy the lines off the
>>>>> monitor, as nothing is getting logged:
>>>>>
>>>>> IOMMU: failed to mpa dmn 0
>>>>> kernel panic - not syncing: VFS: Unable to mount root fs on
>>>>> unknown_block (0,0)
>>>>> Pid:1, comm swapper Tainted: G  -------------} 2.6.32-431.20.3.el6.i686 #1
>>>>>
>>>>> then a a number of dump lines.
>>>>>
>>>>> The kernel that is working (only other one listed in menu) is:
>>>>> 2.6.32-279.22.1.el6.i686
>>>> why don' t you just remove any package from the new kernel
>>>> which don't work anyways and after that "yum upgrade" again?
>>> But how do I determine what package from the new kernel
>> i said: and after that "yum upgrade" again man if you remove that
>> broken packages a "yum upgrade" pulls them simply as if they where
>> never be installed and the rpmscripts will generate a new initrd
> OK.  So...
>
> # yum erase kernel*
>
> ...
>
> Removing:
>    kernel                           i686 2.6.32-431.20.3.el6
> installed           89 M
>    kernel-firmware                  noarch
> 2.6.32-431.20.3.el6             installed           21 M
>    kernel-headers                   i686 2.6.32-431.20.3.el6
> installed          2.5 M
> Removing for dependencies:
>    glibc-devel                      i686 2.12-1.132.el6_5.2
> installed          953 k
>    glibc-headers                    i686 2.12-1.132.el6_5.2
> installed          2.1 M
>    irqbalance                       i686 2:1.0.4-9.el6_5
> installed           64 k
>    mod_perl                         i686 2.0.4-11.el6_5
> installed          6.0 M
>    perl-ExtUtils-MakeMaker          i686 6.55-136.el6
> installed          608 k
>    perl-ExtUtils-ParseXS            i686 1:2.2003.0-136.el6
> installed           61 k
>    perl-Test-Harness                i686 3.17-136.el6
> installed          399 k
>    perl-Test-Simple                 i686 0.92-136.el6
> installed          184 k
>    perl-devel                       i686 4:5.10.1-136.el6
> installed          1.8 M
>    redhat-lsb                       i686 4.0-7.el6.centos
> installed          0.0
>    redhat-lsb-compat                i686 4.0-7.el6.centos
> installed          0.0
>    redhat-lsb-core                  i686 4.0-7.el6.centos
> installed           22 k
>    redhat-lsb-graphics              i686 4.0-7.el6.centos
> installed          0.0
>    redhat-lsb-printing              i686 4.0-7.el6.centos
> installed          0.0
>
> Transaction Summary
> ===========================================================================================================
> Remove       17 Package(s)
>
>
> So I am making notes about what is being removed so I can insure that it
> gets reinstalled with the upgrade.

Well the upgrade is NOT reinstalling all that was erased:

# yum upgrade

Installing:
  kernel                      i686 2.6.32-431.20.3.el6              
updates              26 M
Installing for dependencies:
  kernel-firmware             noarch 2.6.32-431.20.3.el6              
updates              13 M

Transaction Summary
===========================================================================================================
Install       2 Package(s)

So looks like I will have to do all the others step by step.