Emulex LP9802DC Manual do Utilizador descarregar pdf (Página 5)

Driver for HP-UX - Installation Section Page 2

Known Issues

The adapCfg.h File

The adapCfg.h is a configuration header file specifying tunable parameters for LightPulse® adapters

attached to the host machine; this file is located in /opt/lpfc/conf.

You may need to modify the adapCfg.h file after installing the driver. You might also need to modify the

file if the hardware configuration changes, e.g., by adding additional disk drives to the Fibre Channel

interface.

Configuring this file is discussed in greater detail in the Configuration manual.

Discovering Disk Drives

To list all the SCSI devices discovered by the lpfc driver, or to list newly attached devices, enter:

ioscan -fkC disk

Sometimes, the driver recognizes disk drives at boot time but you won't be able to use those drives

because special file entries for them do not exist. To create these special files, run:

insf -e

Ioscan on 64-bit HP-UX 11i

If the ioscan does not report the software state correctly for lpfd (Pseudo HBA) and devices attached to

it, the I/Os are still sent to those devices. You may be required to run ioscan multiple times to report the

software state correctly.

FCP - Different SCSI Target IDs on Different Hosts

A Fibre Channel target is assigned its D_ID at loop initialization time; the SCSI target ID for that target is

assigned by the device driver when the device is first discovered. It is possible for the D_ID to change

between one loop initialization and the next. Every time a system boots or a target is added to, or

removed from, the Fibre Channel, the loop will be re-initialized. After a system has booted, it will

maintain a constant view of the same target ID because the driver software remaps the SCSI target ID to

the new D_ID on the fly. However, a second system may use a different SCSI target ID for that target.

Thus, if you are seeking to work with the same target across multiple hosts you must be prepared to

encounter the situation where the same Fibre Channel target is known by different SCSI target IDs. The

persistent binding feature of this device driver can be used to maintain a consistent target ID on all

systems.

Drive Light Turns Off

On some disk drives with down level firmware, the drive light will turn off. Typically, the drive light does

not turn on again under its own power. In some situations, however, the light will turn on when a

command to it times out and the driver tries to abort the command. It may also turn on at the next loop

event. Contact the drive manufacturer for new firmware to fix the problem.

LIP type F8

Some disk drive firmware does not recover from a LIP type F8 the way other Fibre Channel devices

expect. This situation can result in a loop full of confused devices. To recover from this situation, reboot

all the hosts and power cycle all the disk drives.

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