CMMVC9291E Task failed because volume is non-mirrored with fully allocated copy and is part of a Metro Mirror or Global Mirror relationship with -nofmtdisk specified
Explanation
To expand a non-mirrored volume that is fully allocated and that is part of a Metro Mirror or Global Mirror relationship, the region of expansion must be formatted. In this case, the -nofmtdisk parameter cannot be used to skip formatting.
User response
Retry the command, omitting the -nofmtdisk parameter.