In some circumstances, you may want to restore an LVM volume group from a VxVM disk group, for example:
An error occurred during conversion, such as a system crash or a disk failure, that caused the conversion to be corrupted.
Conversion was only partially successful for a set of LVM volume groups.
The ability to restore the original LVM configuration using vxvmconvert depends on whether any changes have been made to the VxVM configuration since the original conversion was performed. Any of the following actions changes the VxVM configuration, and makes restoration by vxvmconvert impossible:
Adding or removing disks to a converted disk group.
Adding or removing converted disk groups.
Changing the names of VxVM objects in a converted disk group.
Resizing of volumes.
Complete restoration from backups of the LVM configuration and user data is required if the VxVM configuration has changed.
If a conversion is interrupted, you can complete it by running the command /etc/vx/bin/vxlvmconv, provided that you have not made any changes to the system that would make conversion impossible.