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Table 1: FC/FCoE Driver Configuration Parameters (Continued)
Variable
Default
Min
Max
Dynamic
Comments
lpfc_max_scsicmpl_time
0
0
60000
Yes
Limits SCSI command
completion time (in mS) to
control I/O queue depth.
The default (0) means the
SCSI layer maintains
control.
lpfc_scan_down
1
0=Off
1=On
No
Select a method for
scanning ALPA to assign a
SCSI ID.
lpfc_tgt_queue_depth
8192
10
8192
No
Default maximum number
of commands sent to a
single target. By default,
there is no effective limit at
the target level.
lpfc_topology
0
0x0=loop
then P2P
0x1=internal
loopback
0x2=P2P only
0x4=loop only
0x6=P2P
then loop
No
FC link topology. (Defaults
to loop. If that fails, the
driver attempts to link in
point-to-point mode).
Note: Not supported for
FCoE.
lpfc_use_adisc
0
0=Off
1=On
Yes
Send ADISC instead of Port
Login (PLOGI) for device
discovery or Registered
State Change Notification
(RSCN).
lpfc_devloss_tmo
10
1
255
Yes
Number of seconds a
remote port can drop from
the SAN before that port is
removed from the driver.
lpfc_use_msi
0
0 = use INTX (min)
1 = use MSI
2 = use MSI-X (max)
No
Selects which interrupt
mode to use. By default, the
driver uses INTX. VMware
guidance is to use MSI-X,
but MSI is available.
lpfc_fcp_wq_count
4
1
31
No
Configures the number of
fast-path work queues used
by the host and port.
lpfc_fcp_eq_count
4
1
7
No
Configures the number of
fast-path event queues
used by the host and port.
lpfc_sg_seg_count
64
64
256
No
Configures the maximum
number of scatter-gather
elements the driver accepts
in a single SCSI command.
Drivers for VMware ESX/ESXi 4.1 - Configuration Section
Page 15