Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Chapter 6 Creating and administering disk groups ...................... 207
About disk groups ....................................................................... 208
Specification of disk groups to commands ................................. 210
System-wide reserved disk groups ........................................... 210
Rules for determining the default disk group ............................. 210
Disk group versions .............................................................. 212
Displaying disk group information ................................................ 216
Displaying free space in a disk group ........................................ 217
Creating a disk group .................................................................. 218
Creating a disk group with an earlier disk group version .............. 219
Adding a disk to a disk group ........................................................ 219
Removing a disk from a disk group ................................................ 220
Moving disks between disk groups ................................................. 221
Deporting a disk group ................................................................ 222
Importing a disk group ................................................................ 223
Setting the automatic recovery of volumes ................................ 224
Handling of minor number conflicts .............................................. 224
Moving disk groups between systems ............................................. 226
Handling errors when importing disks ..................................... 227
Reserving minor numbers for disk groups ................................. 229
Compatibility of disk groups between platforms ......................... 231
Handling cloned disks with duplicated identifiers ............................. 232
Writing a new UDID to a disk .................................................. 233
Importing a disk group containing cloned disks ......................... 233
Sample cases of operations on cloned disks ............................... 235
Considerations when using EMC CLARiiON SNAPSHOT
LUNs ............................................................................ 241
Renaming a disk group ................................................................ 241
Handling conflicting configuration copies ....................................... 243
Example of a serial split brain condition in a cluster ................... 243
Correcting conflicting configuration information ....................... 248
Reorganizing the contents of disk groups ........................................ 250
Limitations of disk group split and join ..................................... 254
Listing objects potentially affected by a move ............................ 255
Moving objects between disk groups ........................................ 257
Splitting disk groups ............................................................. 260
Joining disk groups ............................................................... 262
Disabling a disk group ................................................................. 263
Destroying a disk group ............................................................... 264
Recovering a destroyed disk group ........................................... 264
Upgrading the disk group version .................................................. 264
About the configuration daemon in VxVM ...................................... 265
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