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

To change the disk-naming scheme
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Select Change the disk naming scheme from the vxdiskadm main menu to
change the disk-naming scheme that you want VxVM to use. When prompted,
enter y to change the naming scheme.
For operating system based naming, you are asked to select between default,
legacy or new device names.
Alternatively, you can change the naming scheme from the command line.
Use the following command to select enclosure-based naming:
# vxddladm set namingscheme=ebn [persistence={yes|no}] \
[lowercase=yes|no] [use_avid=yes|no]
Use the following command to select operating system-based naming:
# vxddladm set namingscheme=osn [persistence={yes|no}] \
[lowercase=yes|no] [mode={legacy|new|default}]
The optional persistence argument allows you to select whether the names
of disk devices that are displayed by VxVM remain unchanged after disk
hardware has been reconfigured and the system rebooted. By default,
enclosure-based naming is persistent. Operating system-based naming is not
persistent by default.
To change only the naming persistence without changing the naming scheme,
run the vxddladm set namingscheme command for the current naming
scheme, and specify the persistence attribute.
By default, the names of the enclosure are converted to lowercase, regardless
of the case of the name specified by the ASL. The enclosure-based device
names are therefore in lower case. Set the lowercase=no option to suppress
the conversion to lowercase.
For enclosure-based naming, the use_avid option specifies whether the Array
Volume ID is used for the index number in the device name. By default,
use_avid=yes, indicating the devices are named as enclosure_avid. If use_avid
is set to no, DMP devices are named as enclosure_index. The index number
is assigned after the devices are sorted by LUN serial number.
The change is immediate whichever method you use.
See “Regenerating persistent device names” on page 103.
101Administering disks
Changing the disk-naming scheme