Howto enable HP-UX 11iv3 agile naming mode in VxVM

By default Veritas Volume Manager uses HP-UX legacy naming scheme instead of the agile view one, of course for any HP-UX Sysadmin this is completely unacceptable. Below is a small procedure to change it.

Display VxVM disk information  and get the current naming scheme.

root@robin:~# vxdisk list
DEVICE       TYPE            DISK         GROUP        STATUS
c0t0d0s2     auto:LVM        -            -            LVM
c0t1d0       auto:LVM        -            -            LVM
c0t2d0       auto:cdsdisk    labdg01      labdg        online
c0t3d0       auto:cdsdisk    labdg02      labdg        online
c0t4d0       auto:cdsdisk    labdg03      labdg        online
c0t5d0       auto:none       -            -            online invalid
c0t6d0       auto:none       -            -            online invalid
c0t7d0       auto:none       -            -            online invalid
c0t8d0s2     auto:hpdisk     rootdisk01   rootdg       online
c0t9d0s2     auto:hpdisk     rootdisk02   rootdg       online
root@robin:~#
root@robin:~# vxddladm get namingscheme
NAMING_SCHEME       PERSISTENCE         MODE                
===============================================
OS Native           Yes                 Legacy              
root@robin:~#

As you can see the mode is se tot legacy and the disks are shown with their legacy device names. To change this use again vxddladm command.

root@robin:~# vxddladm set namingscheme=osn mode=new

The parameter used are namingscheme and mode. The available options for the first are:

• ebn - Enclosure based names.
• osn - Operative system names.

If ebn is used neither legacy mode nor new mode can be set since hardware names provided by the disk array will be used so use osn as naming scheme.

The second parameter is mode and of course defines which naming model will be used in the osn naming scheme. The following three values can be set:

• default
• legacy
• new

Now check the change by executing vxdisk and vxddladm commands.

root@robin:~# vxdisk list
DEVICE       TYPE            DISK         GROUP        STATUS
disk4_p2     auto:LVM        -            -            LVM
disk6        auto:LVM        -            -            LVM
disk8        auto:cdsdisk    labdg01      labdg        online
disk10       auto:cdsdisk    labdg02      labdg        online
disk12       auto:cdsdisk    labdg03      labdg        online
disk14       auto:none       -            -            online invalid
disk16       auto:none       -            -            online invalid
disk18       auto:none       -            -            online invalid
disk20_p2    auto:hpdisk     rootdisk01   rootdg       online
disk22_p2    auto:hpdisk     rootdisk02   rootdg       online
root@robin:~#
root@robin:~# vxddladm get namingscheme
NAMING_SCHEME       PERSISTENCE         MODE                
===============================================
OS Native           Yes                 New                 
root@robin:~#

Of course the naming scheme can be set back to the legacy scheme using the same procedure.

Juanma.