Emulex LightPulse LPe1105-M4 HBA Instalační příručka stáhnout pdf (Strana 89)

Editing the configuration files

Installing and Configuring the Linux Host with the Emulex Driver

Note: For FCoE adapters, the FC link is virtualized within a 10 gigabit

ethernet link. As such, modification of this setting will not affect the FC link

speed.

lpfc_topology

Specifies the link topology.

0x0 = attempt loop mode then point-to-point

0x02 = attempt point-to-point mode only

0x04 = attempt loop mode only

0x06 = attempt point-to-point mode then loop

In certain environments, attempting to log into a fabric in loop-mode

may cause undesirable behavior. In such environments, EMC

recommends explicitly setting the link topology. Explicitly setting the

lpfc_topology parameter may reduce the time to complete the login

to a target. Hence, if the host is connecting only to a FC-AL

environment, this parameter should be set to 0x04. Similarly, if the

host is connecting only to a FC-SW environment, this parameter

should be set to 0x02.

lpfc_nodev_tmo Specifies the amount of time [0-255] that all I/O errors will be held on

devices that disappear. EMC recommends that this value be set to 30.

In certain high-stress, non-production environments, a higher

timeout value has helped recover over-exercised LUNS. In such

environments, this value has been set to 60 seconds.

lpfc_log_verbose Specifies the bit mask to record specific types of verbose messages.

0x0 = No verbose logging

0x1 = ELS events

0x2 = Link Discover events

0x4 = Mailbox events

0x8 = Initialization events

0x10 = Link events

0x20 = IP traffic history

0x40 = FCP Traffic History

0x80 = Node Table events

0x400 = Miscellaneous events

0x800 = SLI events

0x1000 = FCP Check Condition Flag

0x2000 = LIBDFC events

0xffff = Log All Messages

The logging level may be increased by setting the desired flags.

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Emulex LightPulse LPe1105-M4 HBA Instalační příručka Strana 89