Issue

For the disks in a diskgroup, VxVM would report an error V-5-1-663

Error Message

VxVM vxconfigd WARNING V-5-1-663 Group group: Duplicate virtual device number(s): Volume volume remapped from major,minor to major,minor ...

Cause

The configuration of the named disk group includes conflicting device numbers.

A disk group configuration lists the recommended device number to use for each volume in the disk group. If two volumes in two disk groups happen to list the same device number, then one of the volumes must use an alternate device number. This is called device number remapping.

Remapping is a temporary change to a volume. If the other disk group is deported and the system is rebooted, then the volume that was remapped may no longer be remapped. Also, volumes that are remapped once are not guaranteed to be remapped to the same device number in further reboots.

Solution

Use the vxdg reminor command to renumber all volumes in the offending disk group permanently.