Hitachi Dynamic Link Manager Software Users Guide for Solaris (6.6) (HIT5205-96009, April 2011)

7. Utility Reference
467
Do not use the output result of the dlmvxexclude utility as is for the
vxvm.exclude file. If a device other than the HDLM-managed devices has
already been invalidated in VxVM, then the invalidated setting might be
canceled.