VERITAS Volume Manager 5.0 Migration Guide (September 2006)

Contents
Chapter 1 VxVM and LVM
Introducing Veritas Volume Manager ........................................................................7
Notable features of VxVM .................................................................................8
VxVM and LVM—conceptual comparison .............................................................10
Coexistence of VxVM and LVM disks ....................................................................13
Chapter 2 Converting LVM to VxVM
Converting unused LVM physical volumes to VxVM disks ....................................16
Removing LVM disk information ....................................................................16
Initializing disks for VxVM use .......................................................................17
Converting LVM volume groups to VxVM disk groups ..........................................17
Volume group conversion limitations ..............................................................18
Conversion process summary ...........................................................................20
Conversion steps explained ..............................................................................21
Restoring the LVM volume group configuration .....................................................28
Rollback to LVM using vxvmconvert ..............................................................30
Full LVM restoration ........................................................................................31
Examples ...................................................................................................................32
Example: displaying the vxvmconvert menu ...................................................32
Example: listing disk information ....................................................................32
Example: listing LVM volume group information ...........................................33
Example: analyzing LVM volume groups ........................................................34
Example: converting LVM volume groups to VxVM disk groups ..................37
Example: list, listvg, and vxprint outputs of an LVM volume group before and after
conversion .................................................................................................41
Example: VxVM to LVM rollback ...................................................................43
General information regarding conversion speed .....................................................44
Chapter 3 Command differences
LVM and VxVM command equivalents ..................................................................48
Comparison of LVM and VxVM tasks .....................................................................54
Tasks with no direct LVM equivalents .....................................................................64
Existing Features in LVM not supported in VxVM .................................................66
Chapter 4 SAM and the VEA