Setting customized names for DMP nodes
The DMP node name is the meta device name which represents the multiple paths to a disk. The DMP node name is generated from the device name according to the VxVM naming scheme.
See Disk device naming in VxVM.
You can specify a customized name for a DMP node. User-specified names are persistent even if names persistence is turned off.
You cannot assign a customized name that is already in use by a device. However, if you assign names that follow the same naming conventions as the names that the DDL generates, a name collision can potentially occur when a device is added. If the user-defined name for a DMP device is the same as the DDL-generated name for another DMP device, the vxdisk list command output displays one of the devices as 'error'.
To specify a custom name for a DMP node
You can also assign names from an input file. This enables you to customize the DMP nodes on the system with meaningful names.
To assign DMP nodes from a file
Use the script vxgetdmpnames to get a sample file populated from the devices in your configuration. The sample file shows the format required and serves as a template to specify your customized names.
To assign the names, use the following command:
# vxddladm assign names file=pathname
To clear custom names
To clear the names, and use the default OSN or EBN names, use the following command:
# vxddladm -c assign names