ADIC Oven 5.4 Manual De Usuario

Fibre Channel Guidelines

The following guidelines exist for AMASS running with fibre channel.

For AMASS users in a HP-UX fibre environment connected to a PathLight 5000 SNC, the environment 
variable: 

AMASS_PLSNK 

should be used. 

A known error condition exists where the first SCSI test-unit-ready sent to the device is never received but 
rather absorbed by the PathLight and a SCSI bus reset status returned. The detected presence of this 
environmental variable in the UNIX shell will cause AMASS to respond correctly to this condition. This 
environmental variable can be set in the shell in which AMASS is started or put directly in the 

amass_start 

script.

AMASS supports fibre on the Sun Solaris platform. When installing AMASS, the AMASS juke driver may be 
unable to attach to fiber attached drives and libraries. If you have this problem, please call ATAC for 
assistance.

AMASS uses symbolic links 

(/dev/rjuke1, /dev/rj1d1..) 

that are mapped to system device files.

For example: 

/dev/rjuke1 ->/hw/scsi/sc7d510 

However, the AMASS install process may have trouble creating symbolic links for fibre devices attached to 
a fabric under IRIX 6.5.14 and later. For instance, after entering the desired controller, target, and Logical 
Unit Number (LUN), you might receive the following error message. 

Failed to build a path to the device for you. 

Please enter the explicit device path: 

To find the explicit device path, use the following steps. You can also use the same steps to determine the 
explicit device path for other fibre devices. This example tries to determine the device path for the first device 
listed in Step 1.

Fabric Tape: node 1000006045170ad2 port 2001006045170ad2, lun 2 on SCSI 
controller 8: unknown

Perform an 

hinv 

system call.

# hinv | grep -i tape

Fabric Tape: node 1000006045170ad2 port 2001006045170ad2, lun 2 on SCSI 
controller 8: unknown

Fabric Tape: node 1000006045170ad2 port 2001006045170ad2, lun 4 on SCSI 
controller 8: unknown

Fabric Tape: node 1000006045170ad2 port 2001006045170ad2, lun 6 on SCSI 
controller 8: unknown

Fabric Tape: node 1000006045170ad2 port 2001006045170ad2, lun 8 on SCSI 
controller 8: unknown

Look at the contents of the 

/dev/scsi 

or 

/hw/scsi 

directories and match the output from the 

hinv 

system call for the desired device.

Note

Make sure that if this environment variable is being used to set it in the shell 
before amassbackup and amassrestore are executed.