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Setting Up HDLM, Checking the Current Settings

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you install HDLM or change the hardware configuration, check the structure and statuses of the paths. You can use the HDLM command's view operation from the remote management client to check path information. The following describes how to check path information by using the dlnkmgr command's view operation. For details about the view operation, see view (Displays Information) on page 6-22. 1. Execute the following command: >dlnkmgr -s host-name -u user-name -p password view -path > redirect-destination-file 2. Open redirect-destination-file and check the following: ¢ Make sure that there is at least one LU being accessed by a path. A path can be identified by PathName. The LU that is accessed by a path can be identified by both DskName and iLU. ¢ Make sure that all the paths are online. Make sure that PathStatus is Online. If a path is not online, Reduced will be displayed. ¢ Make sure that for each path the combination of the CHA port (ChaPort), through which multiple paths are accessing the same LU, and the HBA port (the host port number and bus number displayed in the PathName column) is different. The digits displayed on the left of PathName indicate a host port number. The numbers displayed between the period to the right of the host port number and the next period indicate a bus number. Setting Up HDLM HDLM includes functions like the load balancing function, the audit logging function, etc. You can configure these functions by using the HDLM command's set operation from the remote management client. This section describes how to set up the HDLM functions. Checking the Current Settings Check the current settings by executing the following command to set the HDLM functionality by using the dlnkmgr command's view operation. >dlnkmgr -s host-name -u user-name -p password view -sys -sfunc HDLM Version : x.x.x-xx Service Pack Version : Load Balance : on(extended lio) Intermittent Error Monitor : off KAPL01001-I The HDLM command completed normally. Operation name = view, completion time = yyyy/mm/dd hh:mm:ss Creating an HDLM Environment 3-9 Hitachi Dynamic Link Manager User Guide (for VMware(R))

Section	Page
User Guide (for VMware(R))	1
Contents	3
Preface	9
Intended audience	10
Product version	10
Release notes	10
Document revision level	10
Document organization	10
Referenced documents	11
Document conventions	11
Convention for storage capacity values	13
Getting help	13
Comments	14
Overview of HDLM	15
What is HDLM?	16
HDLM Features	17
HDLM Functions	19
Devices Managed by HDLM	20
System Configuration	20
LU Configuration	21
Program Configuration	22
HDLM driver and NMP positions	23
Distributing a Load Using Load Balancing	24
Paths to Which Load Balancing Is Applied	26
Load Balancing Algorithms	27
Performing Failovers and Failbacks Using Path Switching	29
Automatic Path Switching	29
Manual Path Switching	31
Path Status Transition	32
Monitoring Intermittent Errors	34
Checking Intermittent Errors	34
Setting Up Intermittent Error Monitoring	34
Intermittent Error Monitoring Actions	35
When a User Changes the Intermittent Error Information	37
Detecting Errors by Using Path Health Checking	39
Error Management	39
Types of Collected Logs	40
Collecting Error Information Using the Utility for Collecting HDLM Error Information (DLMgetras)	41
Collecting Audit Log Data	41
Categories and Audit Events that HDLM Can Output to the Audit Log	43
Requirements for Outputting Audit Log Data	44
Destination and Filtering of Audit Log Data	45
Audit Log Data Formats	45
Creating an HDLM Environment	49
HDLM System Requirements	50
Hosts and OSs Supported by HDLM	50
Storage Systems Supported by HDLM	50
Memory and Disk Capacity Requirements	51
Number of Paths Supported in HDLM	51
Flow for Creating an HDLM Environment	52
HDLM Installation Types	52
Notes on Creating an HDLM Environment	52
Installing HDLM	53
Performing a New Installation of HDLM	53
Performing a Re-installation of HDLM	56
Checking the Path Configuration	56
Setting Up HDLM	57
Checking the Current Settings	57
Setting Up the HDLM Functions	58
Checking the Updated Settings	60
Setting Up Integrated Traces	61
Uninstalling HDLM	63
Preparations for HDLM Uninstallation	63
Uninstalling HDLM	64
HDLM Operation	67
HDLM Operations Using Commands	68
Notes on Using Commands	68
Viewing Path Information	68
Changing the Status of Paths	69
Viewing LU Information	70
Initializing Statistical Information for Paths	71
Viewing and Setting Up the Operating Environment	71
Viewing License Information	72
Updating the License	73
Viewing HDLM Version Information	73
Troubleshooting	75
Information Collected by the DLMgetras Utility for Collecting HDLM Error Information	76
Checking Error Information in Messages	76
What To Do for a Path Error	76
Examining the Messages	78
Obtain Path Information	78
Identifying the Error Path	78
Narrowing Down the Hardware That Might Have Caused the Error	78
Identifying the Error Location and Correcting any Hardware Error	78
Placing the Path Online	78
What To Do for a Program Error	79
Examining the Messages	79
Obtaining Program Information	79
What To Do for the Program Error	80
Contacting your HDLM Vendor or Maintenance Company	80
What To Do for Other Errors	80
Command Reference	81
Overview of the HDLM Command dlnkmgr	82
clear (Returns the Path Statistics to the Initial Value)	83
Format	83
Parameters	84
help (Displays the Operation Format)	85
Format	85
Parameter	85
offline (Places Paths Offline)	87
Format	88
Parameters	88
online (Places Paths Online)	91
Format	91
Parameters	92
set (Sets Up the Operating Environment)	95
Format	95
Parameters	96
view (Displays Information)	102
Format	102
Parameters (To display program information)	104
Utility Reference	129
The DLMgetras Utility for Collecting HDLM Error Information	130
Format	130
Parameters	130
List of Collected Error Information	131
Messages	135
Before Viewing the List of Messages	136
Format and Meaning of Message IDs	136
Terms Used in Messages and Message Explanations	136
KAPL01001 to KAPL02000	137
KAPL09001 to KAPL10000	157
KAPL10001 to KAPL11000	158
KAPL13001 to KAPL14000	163
KAPL15001 to KAPL16000	164
KAPL20001 to KAPL21000	165
KAPL21001 to KAPL22000	169
Acronyms and abbreviations	171
Glossary	177

Match case Limit results 1 per page

you install HDLM or change the hardware configuration, check the structure

and statuses of the paths.

You can use the HDLM command's

view

operation from the remote

management client to check path information.

The following describes how to check path information by using the

dlnkmgr

command's

view

operation. For details about the view operation, see

view

(Displays Information) on page

Execute the following command:

>dlnkmgr -s

host-name

-u

user-name

-p

password

view -path >

redirect-destination-file

Open

redirect-destination-file

and check the following:

Make sure that there is at least one LU being accessed by a path.

A path can be identified by

PathName

. The LU that is accessed by a

path can be identified by both

DskName

and

iLU

Make sure that all the paths are online.

Make sure that

PathStatus

Online

. If a path is not online,

Reduced

will be displayed.

Make sure that for each path the combination of the CHA port

(

ChaPort

), through which multiple paths are accessing the same LU,

and the HBA port (the host port number and bus number displayed in

the

PathName

column) is different.

The digits displayed on the left of PathName indicate a host port

number. The numbers displayed between the period to the right of the

host port number and the next period indicate a bus number.

Setting Up HDLM

HDLM includes functions like the load balancing function, the audit logging

function, etc. You can configure these functions by using the HDLM

command's

set

operation from the remote management client. This section

describes how to set up the HDLM functions.

Checking the Current Settings

Check the current settings by executing the following command to set the

HDLM functionality by using the

dlnkmgr

command's

view

operation.

>dlnkmgr -s

host-name

-u

user-name

-p

password

view -sys -sfunc

HDLM Version

x.x.x-xx

Service Pack Version

Load Balance

: on(extended lio)

Intermittent Error Monitor

: off

KAPL01001-I The HDLM command completed normally. Operation name =

view, completion time =

yyyy

dd hh

Creating an HDLM Environment

3-9

Hitachi Dynamic Link Manager User Guide (for VMware(R))