Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

To regenerate persistent device names
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To regenerate the persistent names repository, use the following command:
# vxddladm [-c] assign names
The -c option clears all user-specified names and replaces them with
autogenerated names.
If the -c option is not specified, existing user-specified names are maintained,
but OS-based and enclosure-based names are regenerated.
The disk names now correspond to the new path names.
Changing device naming for TPD-controlled enclosures
By default, TPD-controlled enclosures use pseudo device names based on the
TPD-assigned node names. If you change the device naming to native, the devices
are named in the same format as other VxVM devices. The devices use either
operating system names (OSN) or enclosure-based names (EBN), depending on
which naming scheme is set.
See “Displaying the disk-naming scheme” on page 103.
To change device naming for TPD-controlled enclosures
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For disk enclosures that are controlled by third-party drivers (TPD) whose
coexistence is supported by an appropriate ASL, the default behavior is to
assign device names that are based on the TPD-assigned node names. You
can use the vxdmpadm command to switch between these names and the device
names that are known to the operating system:
# vxdmpadm setattr enclosure enclosure_name tpdmode=native|pseudo
The argument to the tpdmode attribute selects names that are based on those
used by the operating system (native), or TPD-assigned node names (pseudo).
If tpdmode is set to native, the path with the smallest device number is
displayed.
Persistent simple or nopriv disks with enclosure-based naming
If you change from OS-based naming to enclosure-based naming, persistent simple
or nopriv disks may be put in the error state and cause VxVM objects on those
disks to fail.
You can use the vxdarestore command to handle errors in persistent simple and
nopriv disks that arise from changing to the enclosure-based naming scheme.
Administering disks
Changing the disk-naming scheme
104