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Disk device naming in VxVM

Prior to VxVM 3.2, all disks were named according to the c#t#d#s# naming format used by the operating system. Fabric mode disks were not supported by VxVM.

From VxVM 3.2 onward, the following methods for naming disk devices exist:

OS-based naming

In the OS-based naming scheme, all disk devices except fabric mode disks are named using the c#t#d#s# format.

The syntax of a device name is c#t#d#s#, where c# represents a controller on a host bus adapter, t# is the target controller ID, d# identifies a disk on the target controller, and s# represents a partition (or slice) on the disk.

  Note   For non-EFI disks, the slice s2 represents the entire disk. For both EFI and non-EFI disks, the entire disk is implied if the slice is omitted from the device name.

The boot disk (which contains the root file system and is used when booting the system) is often identified to VxVM by the device name c0t0d0.

Fabric mode disk devices are named as follows:

Enclosure-based naming

Enclosure-based naming operates as follows:

See "Changing the disk-naming scheme" on page 96.

To display the native OS device names of a VM disk (such as mydg01), use the following command:

# vxdisk path | egrep diskname

See "Renaming an enclosure" on page 166.

See "Disk categories" on page 88.