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Appendix B VMware Configuration & Management
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>
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>
PARAMETER
atto_log_mask
atto_max_sectors
can_queue
change_notification
cmd_per_lun
cmd_retry_count
event_log_mask
heap_initial
heap_max
io_time_out
num_sas_addr
num_sg_lists
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.
The following table lists the configurable parameters
along with a brief description.
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).
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.
Number of SAS addresses to assign to the
adapter's PHYs. Addresses are assigned
sequentially from the base address. Valid settings
are 1, 2, 4, 8. Default is 1.
Number of SGL pages. Default is 256.
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