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6
Command Reference
This chapter describes the HDLM command (dlnkmgr) and its operations.
□
Overview of the HDLM Command dlnkmgr
□
clear (Returns the Path Statistics to the Initial Value)
□
help (Displays the Operation Format)
□
offline (Places Paths Offline)
□
online (Places Paths Online)
□
set (Sets Up the Operating Environment)
□
view (Displays Information)
Command Reference
6-1
Hitachi Dynamic Link Manager User Guide for AIX®
- Dynamic Link Manager Software 1
- Contents 3
- Intended audience 12
- Product version 12
- Release notes 12
- Document revision level 12
- Document organization 12
- Referenced documents 13
- Document conventions 14
- Getting help 15
- Comments 15
- Overview of HDLM 17
- What is HDLM? 18
- Features 18
- HDLM Functions 21
- Cluster support 22
- Devices Managed by HDLM 23
- System Configuration 23
- Components Description 24
- LU Configuration 25
- Program Configuration 26
- Program name Functions 27
- Load Balancing Algorithms 32
- Automatic 34
- path switching 34
- Figure 2-8 Path switching 35
- Automatic failbacks 38
- Manual path switching 39
- Path status transition 40
- Status transitions of a path 41
- Checking intermittent errors 43
- Monitoring 46
- Function 48
- Error management 49
- Types of Collected Logs 50
- Filtering 52
- of error information 52
- Collecting 53
- Collecting Audit Log Data 54
- Audit Log Data Formats 59
- Explanation 60
- HDLM System Requirements 65
- AIX V7.1 (Virtual I/O Server) 66
- (where xx is a number) 66
- Storage Systems 67
- Configurations 68
- OS Related Programs 69
- Memory Requirements 71
- Disk Capacity Requirements 72
- Types of HDLM Installation 73
- Notes on Installing HDLM 74
- Notes on a License Key 76
- Notes on Trace Files 77
- Notes on Storage Systems 77
- Notes on the Cluster 78
- Installing HDLM 79
- Environments 80
- Set Up the Hardware 84
- Switch the Kernel Mode 85
- Performing a New Installation 86
- of HDLM 86
- # lsdev -Cc disk 87
- . Execute the chdev 89
- . Execute the dlnkmgr 89
- # umount /cdrom 93
- # rm -r /cdrom 93
- # shutdown -Fr 93
- Stop Applications 97
- File Description 98
- . Execute the dlmrmdev 100
- Creating an HDLM Environment 102
- (in a Boot Disk Environment) 119
- . Insert the DVD-ROM 124
- . Unmount the DVD-ROM 126
- . Mount the DVD-ROM 128
- Setting up HDLM 132
- Checking the Current Settings 133
- Setting Up the HDLM Functions 133
- Setting Up Load Balancing 134
- Setting the Trace Level 138
- Setting the Trace File Size 139
- Value (severity) Explanation 140
- Value Explanation 140
- Checking the Updated Settings 141
- Setting up Integrated Traces 142
- Settings 143
- Interval 146
- Settings 148
- About the Reservation Policy 149
- Settings for Using PowerHA 149
- Storage System Settings 150
- Settings for Using GPFS 152
- Settings for Using VCS 155
- Removing HDLM 156
- HDLM Operation 167
- Notes on Using HDLM 168
- Storage System 169
- Notes on Shutting Down a Host 169
- Notes on Errors in a Host 169
- Viewed From the Same Server 170
- Environment 170
- Notes on Replicating a System 171
- Notes on Using Commands 171
- Viewing Path Information 171
- Changing the Status of Paths 172
- Viewing LU Information 174
- Path IDs, and LDEVs 174
- Viewing License Information 177
- Updating the License 178
- Starting the 180
- HDLM Manager 180
- Stopping the HDLM Manager 180
- HDLM Resident Processes 181
- Changing hdisk attributes 183
- Changing a Path 187
- . Delete the path 188
- Replacing 189
- # cfgmgr -l fcsn 192
- Replacing a Fiber Cable 194
- Troubleshooting 199
- Checking 200
- What To Do for a Path Error 201
- Examining 204
- the Messages 204
- Obtaining Program Information 204
- What To Do for Other Errors 205
- Command Reference 207
- Command format 208
- Parameters 209
- Parameter 210
- Example 3 211
- Reference 217
- To Place Paths Online 217
- Value Description 225
- Table 6-4 Trace Level Values 226
- Table 6-6 License Key Types 233
- To Display Path Information 238
- To display path information 238
- [vg] [dpc] 239
- [[slpr] [vg] 239
- Examples 245
- Displayed path information 252
- number (the xx 256
- To Display LU Information 258
- To display LU information 258
- Example 2 261
- Displayed LU information 263
- Item Description 270
- Utility Reference 273
- Overview of the Utilities 274
- Time of the Utilities 275
- Output directory 280
- Files Explanation 280
- Supplemental Information: 284
- Information 287
- Environment ODM 292
- . Execute the dlmpr 296
- [ODM_SETTINGS] section 302
- Log file 309
- Messages 311
- Format Meaning 313
- Terms Meaning 313
- KAPL01001 to KAPL02000 314
- Message Text Explanation 315
- KAPL03001 to KAPL04000 338
- KAPL04001 to KAPL05000 341
- KAPL05001 to KAPL06000 350
- KAPL06001 to KAPL07000 354
- KAPL07001 to KAPL08000 357
- KAPL08001 to KAPL09000 358
- KAPL09001 to KAPL10000 361
- KAPL10001 to KAPL11000 387
- . Check whether you 389
- . Check whether the 389
- . Check that the disk 389
- KAPL11001 to KAPL12000 412
- KAPL13001 to KAPL14000 416
- KAPL15001 to KAPL16000 423
- Component 425
- Message ID Explanation 426
- Versions of HDLM 431
- Add-in HDLM Driver Module 434
- Commands of the utilities for 435
- Corresponding AIX commands 435
- 0: Ignoring the reservation 437
- 2: Persistent reservation 437
- PR_exclusive 437
- Virtual SCSI Disks 438
- Acronyms and abbreviations 439
- Acronyms-2 440
- Acronyms-3 441
- Acronyms-4 442
- Acronyms-5 443
- Acronyms-6 444
- Glossary 445
- Glossary-2 446
- Glossary-3 447
- Glossary-4 448
- Glossary-5 449
- Glossary-6 450
- Glossary-7 451
- Glossary-8 452
- MK-92DLM111-21 460
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