Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

See “About SMH and the VEA” on page 449.
The vxvmconvert command is provided to enable LVM disks to be converted to a
VxVM disk format without losing any data.
See “Converting LVM volume groups to VxVM disk groups” on page 402.
Converting LVM to VxVM
About LVM to VxVM conversion
This chapter explains how to convert your LVM configuration to a VxVM
configuration.
The basic tools for conversion are the VxVM commands, vxvmconvert and
vxdiskadm, and the LVM administrative utilities such as pvremove and
vgcfgbackup. The discussion here details how to use these tools and gives some
insights into how these tools work.
The disks on your system that are managed by LVM can be of two types: LVM
disks in volume groups, and unused disks.
The former are disks that contain logical volumes and volume groups. Unused
disks contain no user data, and are not used by any volume group, but have LVM
disk headers written by pvcreate. Conversion is done differently for these two
types of disks.
For unused LVM disks you can use a combination of pvremove and vxdiskadm.
For LVM disks in volume groups, the primary tool for conversion is the
vxvmconvert command. More information is available on the vxdiskadm command.
See the man page vxdiskadm(1M) or the Veritas Volume Manager Administrator’s
Guide.
The vxvmconvert utility is an interactive command. You can also use the
vxautoanalysis command and the vxautoconvert command to perform
non-interactive analysis and conversion of LVM volume groups. The
vxautorollback command also lets you reverse the conversion, and turn a disk
group back into a volume group.
See “Non-interactive conversion of volume groups” on page 432.
Offline data migration
Converting LVM to VxVM
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