"WARNING: add_spec: No major number for mpt" error

If you hit the following errors when you reboot the server, just as the server is almost ready. They will come in a large numbers repeatedly. The errors are usually on your console and /var/adm/messages.

"WARNING: add_spec: No major number for mpt"

You may want to try the solutions below. This is from sunsolve.. I have tried out solution 2 successfully.

Document Audience: SPECTRUM 
Document ID: 74181 
Title: Solaris[TM]: "WARNING: add_spec: No major number for mpt" 
Update Date: Wed Sep 29 00:00:00 MDT 2004 
Products:  Solaris 8 Operating System,  Solaris 9 Operating System 
Technical Areas:  Patch 

--------------------------------------------------------------------------------


--------------------------------------------------------------------------------

Keyword(s):add_spec, mpt, major number

Problem Statement:  

After installing a patch to update /etc/driver_classes with
an "mpt" entry (for example, 108528-xx with xx>21), the system may
generate the following WARNING messages at boot time:

 SunOS Release 5.8 Version Generic_108528-29 64-bit
 Copyright 1983-2003 Sun Microsystems, Inc.  All rights reserved.
 WARNING: add_spec: No major number for mpt
 WARNING: add_spec: No major number for mpt
 WARNING: add_spec: No major number for mpt
 WARNING: add_spec: No major number for mpt
 [...]
 WARNING: add_spec: No major number for mpt
 WARNING: add_spec: No major number for mpt
 WARNING: add_spec: No major number for mpt
 configuring IPv4 interfaces: hme0.
 configuring IPv6 interfaces: hme0.

The following message appears in the /var/sadm/patch//log file
when the entry has not been successfully added to the /etc/name_to_major
file:
          SUNWcsr: failed to add mpt to  /etc/name_to_major:
          (mpt) already in use as a driver or alias.

Explanation:
============
The problem is due to a reference in /etc/driver_classes to the
mpt driver. The mpt driver isn't added to the system because the
/etc/driver_aliases file already had an entry with the mpt driver. Because
of this, the add_drv failed when trying to install the driver.

This is an example of the inconsistencies described in Bug ID 4939994,
"Inconsistency between name_to_major and driver_aliases."


Resolution:  

To solve this problem, a script has been created to identify the
inconsistencies between /etc/driver_aliases and /etc/name_to_major.
This script can also add the missing entries if they are listed in a
"reference" name_to_major file.

Here is an example of the way to use the attached script:

# cksum InconsitencyFixTool.tar.gz
1091730651      4410    InconsitencyFixTool.tar.gz

# gzip -dc InconsitencyFixTool.tar.gz | tar -xvf -
x InconsitencyFixTool, 0 bytes, 0 tape blocks
x InconsitencyFixTool/README, 1364 bytes, 3 tape blocks
x InconsitencyFixTool/name_to_major.InconsitencyFix, 4928 bytes, 10 tape blocks
x InconsitencyFixTool/name_to_major.i386.5.8, 841 bytes, 2 tape blocks
x InconsitencyFixTool/name_to_major.i386.5.9, 889 bytes, 2 tape blocks
x InconsitencyFixTool/name_to_major.sparc.5.8, 1831 bytes, 4 tape blocks
x InconsitencyFixTool/name_to_major.sparc.5.9, 1815 bytes, 4 tape blocks

# cd InconsitencyFixTool
# ./name_to_major.InconsitencyFix
Saving original files into .
Inconsistency found between //etc/driver_aliases and //etc/name_to_major on
the following driver(s):
mpt

Add  mpt  to //etc/name_to_major ? [y] y
Adding the following devices to //etc/name_to_major :
mpt 215
# 

Reboot the system.


Temporary Workaround:  

If the above script cannot be used, there are two other ways to fix the
problem:

1. Remove the "mpt" lines from /etc/driver_classes and /etc/driver_aliases.

   They should look like the following:
     driver_aliases:mpt "pci1000,30"
     driver_classes:mpt      scsi

   Next, install (or remove and reinstall) a patch updating all
   those files [/etc/driver_aliases /etc/driver_classes  
   /etc/name_to_major]. For example, install the mpt patch 115275-01 (or
   above) or a new kernel Update patch.

   OR

2. Add the missing "mpt" entry in the /etc/name_to_major file
   to correct the problem with the patch installation.

   You must manually append the "mpt" entry at the end
   of the /etc/name_to_major file as follows:

          mpt XXX

   Where XXX is the maximum+1 of the numbers already given to
   the other drivers in this file. Separate "mpt" and the given number with
   a space character.

   For example:

   # tail /etc/name_to_major
   fasttrap 223
   dmfe 224
   todds1307 225
   pool 226
   zcons 227
   ipf 228
   pfil 229
   ctsmc 230
   bl 231
   mpt 232

   Reboot the system.



Additional Information:  

History:
========
Two patches have been identified that can cause the problem:

    108974-31(or greater): SunOS 5.8: dada, uata, dad, sd, ssd and scsi
    drivers patch
    
    OR

    109885-14 SunOS 5.8: glm patch

    Only on top of a kernel patch 108528-xx where xx <= 21.

Note: If you have a more recent version than -21 before installing
the above patches, the problem will not occur.

This problem can also exist on Solaris 9 - if S9 was installed with
an upgrade from a S8 system where the inconsistency existed.

Impact:
=======
The mpt driver would not be installed correctly and cannot be used.


Attachments:  

76676 - InconsistencyFixTool.tar.gz