Network

Booting, Installing, Recovery, and Sharing in a vPars Environment from DVD / CDROM / Tape / Network

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a) Prior to A.03.03 and A.04.02, a vpar may be recovered from a tape image.

However this must be done from the BCH or EFI. Recovering a vpar from a tape

image can not be done while the system is up and running, similar to the cold

install method. So if you have one or more vpars to recover, you must bring the

system down, recover one vpar, bring the system down again, and recover

another vpar, and so on.

b) For PA-systems, starting with A.03.03 and A.04.02, a vpar may be recovered

from tape while the system is up and running in a vPars envionment. An I/O path

attribute of “TAPE” may now be specified with the hardware path for a tape

device similar to that of a standard disk boot device. For example:

vparmodify –p <vparname> -a io:<path>:TAPE

When a tape device is specified in this manner, the vparload (from the monitor

prompt) or vparboot (from a running vPar) commands will initiate a boot from

tape.

2. Network Image

A vpar may be recovered from a network image. Recovering a vpar from a network

image may be done while in a vPars environment. This method uses Ignite-UX and is

similar to installing an OS to a vpar boot disk from an Ignite-UX server. This method

does not require the system and/or any vpars to be shut down prior to the recovery

process.

V. Sharing CDROM/DVD and TAPE Tape Drives

A. Sharing Defined

The concept of “sharing” needs to be clarified for the purposes of this document. Within a

vPars environment, I/O, including CD/DVDs and Tape drives, may not be shared internally

across vpars. This means that I/O is assigned to one and only one vpar and other vpars can

not see or access it through any internal means, such as the vPars software.

However, it is possible for vpars to access the same CD/DVD or Tape drives through standard

network methods (e.g. NFS), available with HP-UX. This is only possible after the vpars

involved are up and running and on the network. The following examples only point out a few

ways (commands) these devices can be accessed across a network.

B. CDROM and DVD Drives

For CD and DVD drives, access is accomplished through the network using the standard HP-UX

mounting process. On the vpar that owns the CD/DVD device, mount the actual CD/DVD,

then export the filesystem so other systems on the network can access it, and then from any

other vpar on the network you can remote mount the CD/DVD filesystem. For example to use

vpar1’s CD/DVD on vpar2, you may use something like:

vpar1# mount /dev/dsk/c1t2d0 /cdrom