Emulex LP9802DC Manual do Utilizador descarregar pdf (Página 13)

Driver for HP-UX - Configuration Section Page 10

Hardware address: 10/1/8/0.1.22.0.2.7

SCSI ID = SCSI Offset + SCSI Index = 255 + 22 = 277

LUN = LUN Offset + ((Target ID)x8) + LUN Value

LUN = 0 + (2x8) + 7 = 23

Hardware address: 10/1/8/0.1.255.1.8.5

SCSI ID = SCSI Offset + SCSI Index = 255 + 255 = 511

LUN = LUN Offset + ((Target ID)x8) + LUN Value

LUN = 128 + (8x8) + 5 = 197

Understand Device Numbering

When the driver is configured, there are various configuration parameters that rely upon device

numbers. This section explains the two levels of device numbering and how they apply to specific

configuration parameters.

The first level of device numbering is the driver instance number. This is the number that is displayed in

log messages to syslog or the console, for example: lpfcX. The adapCfg.h configuration parameters that

use lpfcXtY rely on X to be the driver instance number and Y to be the FCP target number. This format is

used to configure persistent binding. In systems where adapters are moved around or changed, it is

possible for the driver instance number to exceed the number of adapters.

The second level of numbering is the SCSI controller number. This number is assigned by the system for

each Pseudo HBA driver it detects. It is typically in the special files created to access each SCSI device:

for example, /dev/dsk/cZt0d0s2.

Once these numbers are assigned, they stay the same between reboots if there are no LightPulse

hardware changes to the system.

adapCfg.h File Parameters

The driver parameters determine some aspects of the driver behavior. The following table lists the driver

parameters and their descriptions. The table also lists the default, minimum and maximum values for

these parameters.

Table 1: adapCfg.h File Parameters

Variable Default Min Max Comments

CFG_ACK0 0 0=Off 1=On Use ACK0 for Class 2.

CFG_AUTOMAP 1 0 3 Automatically assigns SCSI IDs

to FCP targets detected.

CFG_CHECK_COND_ERR 0 Boolean

0=false

1=true

Treat certain FCP Check

conditions as FCP RSP errors.

CFG_DELAY_RSP_ERR 1 Boolean

0=false

1=true

Treat FCP RSP errs like no-

device-delay.

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