HP-UX System Administrator's Guide: Logical Volume Management (5900-3028, March 2013)

Information Collection.......................................................................................................110
Consistency Checks..........................................................................................................111
Maintenance Mode Boot..................................................................................................111
I/O Errors...........................................................................................................................112
Recoverable Errors...........................................................................................................112
Temporarily Unavailable Device....................................................................................113
Permanently Unavailable Device....................................................................................113
Nonrecoverable Errors......................................................................................................113
Media Errors..............................................................................................................114
Missing Device When the Volume Group Was Activated..................................................114
Volume Group Activation Failures...........................................................................................114
Quorum Problems with a Nonroot Volume Group.................................................................114
Quorum Problems with a Root Volume Group......................................................................115
Version 2.x Volume Group Activation Failures......................................................................115
Root Volume Group Scanning................................................................................................117
LVM Boot Failures.................................................................................................................118
Insufficient Quorum..........................................................................................................118
Corrupted LVM Data Structures on Disk...............................................................................118
Corrupted LVM Configuration File.......................................................................................118
Problems After Reducing the Size of a Logical Volume...............................................................118
Disk Troubleshooting and Recovery Procedures.........................................................................119
Step 1: Preparing for Disk Recovery....................................................................................119
Defining a Recovery Strategy........................................................................................119
Using LVM Online Disk Replacement (LVM OLR)..............................................................119
Mirroring Critical Information, Especially the Root Volume Group.......................................120
Step 2: Recognizing a Failing Disk.....................................................................................121
I/O Errors in the System Log.........................................................................................121
Disk Failure Notification Messages from Diagnostics........................................................121
LVM Command Errors..................................................................................................121
Step 3: Confirming Disk Failure.........................................................................................123
Step 4: Determining Action for Disk Removal or Replacement................................................126
Step 5: Removing a Bad Disk............................................................................................129
Removing a Mirror Copy from a Disk.............................................................................129
Removing Mirror Copy from Ghost Disk..........................................................................129
Moving the Physical Extents to Another Disk....................................................................130
Removing the Disk from the Volume Group ....................................................................130
Step 6: Replacing a Bad Disk (Persistent DSFs).....................................................................132
Replacing a Mirrored Nonboot Disk..............................................................................132
Replacing an Unmirrored Nonboot Disk.........................................................................134
Replacing a Mirrored Boot Disk....................................................................................137
Replacing an Unmirrored Boot Disk...............................................................................139
Step 7: Replacing a Bad Disk (Legacy DSFs)........................................................................140
Reporting Problems...............................................................................................................141
5 Support and Other Resources...................................................................143
New and Changed Information in This Edition..........................................................................143
About this Series...................................................................................................................143
Typographic Conventions.......................................................................................................143
Examples and Shells........................................................................................................144
Related Information...............................................................................................................145
Finding HP-UX Information.....................................................................................................145
HP-UX 11i Release Names and Operating System Version Identifiers............................................146
Determining Your System Version............................................................................................146
Publication History................................................................................................................146
HP Insight Remote Support Software........................................................................................147
6 Contents