HP Hitachi Dynamic Link Manager Software User Manual

Page 411

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Item name

Default value

Recommended value

extended load

balancing

Dynamic I/O path
control

#

off
The checking interval is 10

minutes.

off
The recommended checking

interval depends on the operating

environment.

#

This item is applied only when Hitachi AMS2000 series, Hitachi SMS

series, or HUS100 series storage is used.

-lb {on [-lbtype {rr|exrr|lio|exlio|lbk|exlbk}]|off}

Enables or disables load balancing.
on: Enabled
off: Disabled

-lbtype {rr|exrr|lio|exlio|lbk|exlbk}

Specify the algorithm to be used for load balancing.
rr: The Round Robin algorithm
exrr: The Extended Round Robin algorithm
lio: The Least I/Os algorithm
exlio: The Extended Least I/Os algorithm
lbk: The Least Blocks algorithm
exlbk: The Extended Least Blocks algorithm
The type of algorithm specified by the -lbtype parameter remains
stored in the system, even when you disable the load
balancing function by specifying -lb off. Therefore, if you re-

enable the load balancing function without specifying an algorithm,

load balancing will be performed according to the algorithm that is

stored in the system.

-ellv error-log-collection-level

Specify the level of error information you want to collect for an error log.
The HDLM manager log (dlmmgr[1-16].log) contains log files in which an

error log collection level can be set.

Table 6-3 Values of the Error Log Collection Levels on page 6-17

shows

the values of the error log collection level. If an error occurs, you may

have to set the error log collection level to 1 or higher to collect log

information.

Table 6-3 Values of the Error Log Collection Levels

Value

Description

0

Collects no error log.

1

Collects error information for the Error or higher level.

Command Reference

6-17

Hitachi Dynamic Link Manager User Guide for Linux

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