Driver Configuration - ATTO Technology Celerity FC-164E Installation And Operation Manual

Supplemental Guide for VMware ESX/ESXi
The following information should be used by advanced users only. Please consult with our Technical Support
Department before applying any of the following information.

1 Driver Configuration

Use the esxcfg-module command to query and
configure the ATTO adapter driver parameters. In
the examples that follow, <driver name> should be
replaced with the ATTO driver name.
To obtain a list of available driver parameters:
# esxcfg-module -i <driver name>
The following table lists the configurable parameters along with a brief description. Supported driver
abbreviations are: A - All drivers, C - celerityfc, celerity8fc, E - esashba, esas2hba.
PARAMETER
atto_log_mask
atto_max_sectors
can_queue
change_notification
cmd_per_lun
cmd_retry_count
event_log_mask
fab_alternate_exchanges
heap_initial
heap_max
io_time_out
max_logins
num_erq
To list the driver parameters that have been set:
# esxcfg-module -g <driver name>
To set a driver parameter:
# esxcfg-module -s param=value <driver name>
Configuration changes made with the esxcfg-
module -s command are persistent across system
reboots. However, the changes will not take affect
until the system is rebooted.
DESCRIPTION
Defines the log mask for sending ATTO driver
information to the system log. Default is 0 (none).
Maximum number of disk sectors in a single data
transfer. Default is 65535 (largest possible value).
Maximum number of commands per adapter
channel. Default is 128.
Enable notifying the OS of the arrival and departure
of target devices. Default is 1 (on).
Maximum number of commands per LUN. Default
is 16.
Maximum number of retries allowed for a
command. Default is 20.
A bit mask of events to report to the system log.
Default is 0x00000001 (crtitical events only).
Causes the chip to alternate between to exchanges
when it runs out of credits on a fabric. This may
improve performance in multiple initiator/target
environments. Default is 0 (off).
Initial heap size allocated for the dirver.
Maximum attainable heap size of the driver.
Time (in seconds) before an I/O command is timed
out by the driver. Set to 0 for no timeout. Default is
30.
Defines the maximum number of ports that can be
logged in at once. Default is 256.
Exchange Request Queue entries. In general, one
ERQ entry is required for each SEST entry. Default
is 256.
Driver
Support
A
A
A
A
A
A
A
C
A
A
A
C
C
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