HP Integrity Virtual Machines Installation, Configuration, and Administration Version A.03.50

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Where /dev/vx/rdsk/dg_name/v_name is a VxVM character device file for volume v_name

on disk group dg_name. To display the VxVM character device file name, enter the following

command:

# vxprint

Disk group: rootdg

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0

PUTIL0

dg rootdg rootdg - - - - - -

dm disk01 c3t0d0 - 35562538 - - - -

Disk group: VxvmTest1

TY NAME ASSOC KSTATE LENGTH PLOFFS STATE TUTIL0

PUTIL0

dg VxvmTest1 VxvmTest1 - - - - - -

dm disk01 c5t8d0 - 71680564 - - - -

v vxvm_1 fsgen ENABLED 2048000 - ACTIVE - -

pl vxvm_1-01 vxvm_1 ENABLED 2048000 - ACTIVE - -

sd disk01-01 vxvm_1-01 ENABLED 2048000 0 - - -

v vxvm_2 fsgen ENABLED 2048000 - ACTIVE - -

pl vxvm_2-01 vxvm_2 ENABLED 2048000 - ACTIVE - -

sd disk01-02 vxvm_2-01 ENABLED 2048000 0 - - -

v vxvm_3 fsgen ENABLED 2048000 - ACTIVE - -

pl vxvm_3-01 vxvm_3 ENABLED 2048000 - ACTIVE - -

sd disk01-03 vxvm_3-01 ENABLED 2048000 0 - - -

v vxvm_4 fsgen ENABLED 2048000 - ACTIVE - -

pl vxvm_4-01 vxvm_4 ENABLED 2048000 - ACTIVE - -

sd disk01-04 vxvm_4-01 ENABLED 2048000 0 - - -

To use VxVM, the Virtual LvDisk resource statement is

disk:scsi::lv:/dev/vx/rdsk/VxvmTest1/vxvm_2.

For information about multipath solutions for Virtual LvDisks, see Section 7.2.1.3 (page 88).

7.2.2.3.3 Virtual FileDisks

A Virtual FileDisk is an emulated SCSI disk whose virtual media comes from a VM Host file.

The VM Host file is specified using the absolute pathname to the file. The file can be on a VxFS

file system locally mounted on the VM Host. NFS file systems are not supported for Virtual

FileDisks.

Virtual FileDisks cannot be shared simultaneously across active virtual machiness. Only one

active virtual machine can be given a particular Virtual FileDisk resource at a time. Virtual

FileDisk resources can be changed dynamically between active virtual machines (see Section 7.3

(page 102)).

The file systems used for Virtual FileDisks need to be managed to prevent data corruptions. To

help with accounting, it is recommended that all files under a given directory be used with a

single virtual machines. Additionally, it might help to allocate file directories from complete

logical volumes or whole disks to make the accounting even easier. See Section 7.2.1.4 (page 88)

for more details.

The Virtual FileDisk resource statement takes the form of:

disk:scsi::file:/pathname/file

Where the /pathname/file specifies the VM Host file used as virtual media.

96 Creating Virtual Storage Devices