Hitachi XP P9500 User Manual page 8

Viewing HDLM Component Information............................................................4-14
Starting and Stopping the HDLM Manager...............................................................4-15
Starting the HDLM Manager.............................................................................4-15
Stopping the HDLM Manager...........................................................................4-15
HDLM Resident Processes......................................................................................4-16
Changing the Configuration of the HDLM Operating Environment.............................4-16
Precautions Regarding Changes to the Configuration of an HDLM Operating
Environment...................................................................................................4-17
Changing the Configuration of a System that Uses HDLM.........................4-17
When the Path Configuration Is Changed................................................4-17
Switching the Kernel Mode.....................................................................4-19
When the Path Configuration Is Changed in a Boot Disk Environment.......4-19
Dynamic Reconfiguration (DR) for Solaris................................................4-20
Overview of Reconfiguring the HDLM Device.....................................................4-20
Reconfiguring the HDLM Device..............................................................4-20
Notes on Reconfiguring the HDLM Device................................................4-21
Adding a New Logical Unit...............................................................................4-22
Notes...................................................................................................4-22
Adding a New LU (When Not Using Sun Cluster)......................................4-23
Adding a New LU By Restarting the Nodes (When Using Sun Cluster)........4-25
Adding a New LU Via Dynamic Reconfiguration (When Using Sun Cluster). 4-31
Configuration Changes Such as Deleting a Logical Unit......................................4-36
Changing the Configuration by Restarting the Host..................................4-37
Deleting an LU via Dynamic Reconfiguration............................................4-42
Specifying Whether a Logical Unit Is To Be Managed by HDLM (When Not Using Sun
Cluster)..........................................................................................................4-43
Changing an HDLM-managed Device to a Non-HDLM-Managed Device......4-44
Changing a Non-HDLM-Managed Device to an HDLM-Managed Device......4-44
Specifying Whether a Logical Unit Is To Be Managed by HDLM (When Using Sun
Cluster)..........................................................................................................4-47
Changing an HDLM-Managed Device to a Non-HDLM-Managed Device......4-47
Changing a Non-HDLM-Managed Device to an HDLM-Managed Device (When
the Node Must Be Restarted).................................................................4-52
Changing a Non-HDLM-Managed Device to an HDLM-Managed Device (For
Dynamic Reconfiguration)......................................................................4-58
5 Troubleshooting....................................................................................5-1
Information collected by using the DLMgetras utility for collecting HDLM error
information.............................................................................................................5-2
Checking Error Information in Messages...................................................................5-2
What To Do for a Path Error....................................................................................5-3
Examining the Messages...................................................................................5-5
Obtain Path Information....................................................................................5-5
Identifying the Error Path..................................................................................5-5
Narrowing Down the Hardware That Might Have Caused the Error.......................5-5
Identifying the Error Location and Correcting any Hardware Errors.......................5-5
Placing the Path Online.....................................................................................5-5
Actions to Take for a Path Error in a Boot Disk Environment......................................5-6
Path Errors During Boot Processing....................................................................5-6
When a Path Error Occurs at the Initial Stage of Boot Processing................5-6
When a Path Error Occurs After the HDLM Driver Starts Path Processing.....5-6
Path Errors After Boot Processing Completes......................................................5-7
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Hitachi Dynamic Link Manager User Guide (for Solaris(R))