Table of Contents
Advertisement
6
Driver parameters for SLES11
Link Down Time Parameter
Notes about the waiting time (Link Down Time) which waits for linkup in order that the
driver tries resending of the SCSI command after link down occurred at the time of
SLES11 use are explained.
In SLES11, in order that a driver tries resending of the SCSI command after link down
occurred, When the change of waiting time (Link Down Time) which waits for linkup is
needed, the rewriting of the "dev_loss_tmo" parameter can change the waiting time.
The "dev_loss_tmo" parameter is set as the optimal value in the general usage in the state
immediately after installation. Usually, it is not necessary to change this value.
Please refer to "a display and setup steps of dev_loss_tmo" for the procedure of displaying
or changing the value of the "dev_loss_tmo" parameter.
In other OS's (example: RHEL6), when the change of waiting time (Link Down Time) is
needed, it is possible to change waiting time (Link Down Time) by using "-p option of the
hfcmgr command", but in SLES11, it is not necessary to use "-p option of the hfcmgr
command" at the purpose of specifying waiting time (Link Down Time).
In SLES11, when "-p option of the hfcmgr command" is used, as shown in the following
figure, in the default state, the column of Link Down Time is displayed as 0 second.
# ./hfcmgr -p hfcldd0
Time: xxxx/xx/xx xx:xx:xx
--------------------------------------------------------
WWPN:50000870003021e0 Device:hfcldd0 [LinkUp]
--------------------------------------------------------
Connection Type
: Point to Point[fabric] (Point to Point)
Link Speed
: 1Gbps (1Gbps)
Max Transfer Size
: 16 MB (-)
Login Delay Time
: 0 sec (-)
Link Down Time
: 0 sec (-)
Reset Delay Time
: 19 sec (-)
Preferred AL-PA
: 0x01 (-)
Reset Timeout
: 20 sec (-)
Abort Timeout
: 8 sec (-)
Queue Depth
: 32 (-)
Machine Check
: 8 (-)
Allowed
: 5 (-)
Target Reset Mode
LUN Reset Delay
: 0 (-)
Interrupt Type
: Legacy Mode (-)
Logging Mode
: default (-)
Login Target Filter : none (-)
: off (-)
53
In the default state, it is set as 0.
Advertisement
Table of Contents
