EMC 300-000-978 REV A03 User Manual

This section describes how to upgrade to PowerPath 4.0 from an 
earlier version of PowerPath. 

You can upgrade to PowerPath 4.0 from the following releases:

◆

PowerPath 3.0.x

◆

PowerPath 2.1

To upgrade from PowerPath 1.5 or 2.0, you must first upgrade to PowerPath 
2.1 or 3.0.x and then upgrade to PowerPath 4.0. 

After upgrading from PowerPath 2.0 to PowerPath 2.1 or 3.0.x, you must 
restore your configuration by running the following command: 

powermt load file=/etc/powermt.custom.pre-pp2.1.0

. Then 

upgrade to PowerPath 4.0.

Before upgrading to PowerPath 4.0, you must uninstall the earlier 
version of PowerPath. Follow the instructions in the documentation 
for that version. Note, however, that you need not reboot the host after you 
uninstall the earlier version.

 Before you uninstall PowerPath 2.1, search 

the file 

/etc/profile

 for the following string: 

end

 

of

 

additions

. If you 

find that string, replace it with the following string: 

done additions

.

The upgrade preserves your existing PowerPath license. You need 
not reenter license information. 

With the release of PowerPath 4.0, PowerPath configuration files 
have changed in both content and number. The upgrade converts 
your PowerPath 3.0.x or 2.1 configuration files to the newer formats.

The old configuration files are saved in 

/etc/emc/emcpxarchive

.