Veritas Volume Manager 5.0 Administrator's Guide (September 2006)

8 Contents
Specifying a disk group to commands ....................................................................159
System-wide reserved disk groups .................................................................159
Rules for determining the default disk group .................................................160
Displaying disk group information .........................................................................161
Displaying free space in a disk group .............................................................162
Creating a disk group ..............................................................................................163
Adding a disk to a disk group .................................................................................164
Removing a disk from a disk group ........................................................................164
Deporting a disk group ...........................................................................................165
Importing a disk group ............................................................................................167
Handling disks with duplicated identifiers .............................................................168
Writing a new UDID to a disk ........................................................................168
Importing a disk group containing cloned disks .............................................169
Sample cases of operations on cloned disks ...................................................171
Renaming a disk group ...........................................................................................175
Moving disks between disk groups .........................................................................176
Moving disk groups between systems ....................................................................177
Handling errors when importing disks ............................................................178
Reserving minor numbers for disk groups ......................................................179
Compatibility of disk groups between platforms ............................................181
Handling conflicting configuration copies .............................................................182
Example of a serial split brain condition in a cluster ......................................182
Correcting conflicting configuration information ...........................................186
Reorganizing the contents of disk groups ...............................................................187
Limitations of disk group split and join ..........................................................191
Listing objects potentially affected by a move ...............................................192
Moving objects between disk groups ..............................................................195
Splitting disk groups .......................................................................................197
Joining disk groups .........................................................................................198
Disabling a disk group ............................................................................................199
Destroying a disk group ..........................................................................................200
Recovering a destroyed disk group .................................................................200
Upgrading a disk group ...........................................................................................200
Managing the configuration daemon in VxVM ......................................................204
Backing up and restoring disk group configuration data ........................................205
Using vxnotify to monitor configuration changes ..................................................205
Chapter 5 Creating and administering subdisks
Creating subdisks ....................................................................................................207
Displaying subdisk information ..............................................................................208
Moving subdisks .....................................................................................................209
Splitting subdisks ....................................................................................................209
Joining subdisks ......................................................................................................210