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8 Contents
Displaying the status of the DMP path restoration thread .................161
Displaying information about the DMP error-handling thread .........162
Configuring array policy modules ..........................................................162
Chapter 4 Creating and administering disk groups
Specifying a disk group to commands ............................................................167
System-wide reserved disk groups .........................................................167
Rules for determining the default disk group .......................................168
Displaying disk group information .................................................................169
Displaying free space in a disk group .....................................................170
Creating a disk group ........................................................................................170
Adding a disk to a disk group ...........................................................................171
Removing a disk from a disk group ................................................................172
Deporting a disk group .....................................................................................173
Importing a disk group .....................................................................................174
Handling disks with duplicated identifiers ...................................................175
Writing a new UDID to a disk ..................................................................176
Importing a disk group containing cloned disks ..................................176
Sample cases of operations on cloned disks ..........................................178
Renaming a disk group .....................................................................................183
Moving disks between disk groups .................................................................184
Moving disk groups between systems ............................................................185
Handling errors when importing disks ..................................................186
Reserving minor numbers for disk groups ............................................187
Compatibility of disk groups between platforms ..................................189
Handling conflicting configuration copies ....................................................190
Example of a serial split brain condition in a cluster ..........................190
Correcting conflicting configuration information ...............................194
Reorganizing the contents of disk groups .....................................................195
Limitations of disk group split and join .................................................199
Listing objects potentially affected by a move ......................................200
Moving objects between disk groups ......................................................203
Splitting disk groups .................................................................................205
Joining disk groups ....................................................................................206
Disabling a disk group .......................................................................................207
Destroying a disk group ....................................................................................208
Recovering a destroyed disk group .........................................................208
Upgrading a disk group ....................................................................................208
Managing the configuration daemon in VxVM ............................................212
Backing up and restoring disk group configuration data ............................213
Using vxnotify to monitor configuration changes .......................................213
Chapter 5 Creating and administering subdisks