Setting up load balancing -191 – HP Hitachi Dynamic Link Manager Software Licenses User Manual

Page 263

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Function

Default value

Recommended value

Trace level

0: Do not output trace files

0: Do not output trace files

File size for the Error

log

9900 (KB)

9900 (KB)

Number of files for the

Error logs

2

2

File size for trace

information

1000 (KB)

1000 (KB)

Number of files for trace

information

4

4

Collection of audit log

data

off

The recommended value

depends on the operating

environment.
Set on, if you want to collect

audit log data.

Audit log facility

user

local0 to local7

#

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

series, HUS100 series storage is used.

Setting Up Load Balancing

You can select whether to enable load balancing.

The following is an example of using a command to set load balancing.

# /opt/DynamicLinkManager/bin/dlnkmgr set -lb on -lbtype exlio

To enable load balancing, specify on. Specify off otherwise. When you set
on, specify one of the following algorithm values after the -lbtype option:

rr for the Round Robin algorithm

exrr for the Extended Round Robin algorithm

lio for the Least I/Os algorithm

exlio for the Extended Least I/Os algorithm

lbk for the Least Blocks. algorithm

exlbk for the Extended Least Blocks algorithm

The type of algorithm specified by the -lbtype parameter remains stored in

the system, even if, you disable the load balancing function by specifying -lb
off. If you decide to re-enable load balancing at a later time, and you do not

specify an algorithm, load balancing will still be executed by using the

algorithm that was previously specified.

Creating an HDLM Environment

3-191

Hitachi Dynamic Link Manager (for Linux®) User Guide

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