user manual

6 Contents
DCO volume versioning .............................................................................. 68
FastResync limitations ............................................................................... 74
Hot-relocation ...................................................................................................... 75
Volume sets .......................................................................................................... 75
Chapter 2 Administering disks
Disk devices .......................................................................................................... 77
Disk device naming in VxVM ..................................................................... 78
Private and public disk regions ................................................................. 80
Discovering and configuring newly added disk devices ................................ 82
Partial device discovery .............................................................................. 82
Discovering disks and dynamically adding disk arrays ......................... 83
Third-party driver coexistence .................................................................. 84
Administering the Device Discovery Layer ............................................. 85
Placing disks under VxVM control ................................................................... 90
Changing the disk-naming scheme ................................................................... 91
Regenerating persistent device names .................................................... 93
Changing device naming for TPD-controlled enclosures ...................... 94
Discovering the association between enclosure and OS based disk names 94
Issues regarding persistent simple or nopriv disks with enclosure-based
naming ................................................................................................... 94
Installing and formatting disks ......................................................................... 96
Displaying and changing default disk layout attributes ............................... 97
Adding a disk to VxVM ....................................................................................... 97
Reinitializing a disk ...................................................................................101
Using vxdiskadd to place a disk under control of VxVM .....................101
Rootability .........................................................................................................102
VxVM root disk volume restrictions .......................................................103
Root disk mirrors .......................................................................................103
Booting root volumes ................................................................................104
Setting up a VxVM root disk and mirror ................................................104
Creating an LVM root disk from a VxVM root disk ..............................106
Adding swap volumes to a VxVM rootable system ...............................107
Adding persistent dump volumes to a VxVM rootable system ..........107
Removing a persistent dump volume .....................................................108
Dynamic LUN expansion ..................................................................................108
Removing disks ..................................................................................................110
Removing a disk with subdisks ................................................................ 111
Removing a disk with no subdisks ..........................................................112
Removing a disk from VxVM control .............................................................112
Removing and replacing disks .........................................................................112
Replacing a failed or removed disk .........................................................115
Enabling a disk ...................................................................................................117