Obtaining DFSMShsm host serialization information

As DFSMShsm processes volumes and data sets, it obtains control of certain control data set records. While DFSMShsm in one z/OS® image has control of a control data set record, other hosts in the same or different z/OS image cannot use that control data set record. To determine which control data set records that a particular DFSMShsm host has control of, issue the following command:
LIST HOST(hostid)
If one DFSMShsm host in a multiple DFSMShsm-host environment fails and you want it to relinquish control of all CDS records, issue the following command:
LIST HOST(hostid) RESET

LIST HOST and LIST HOST RESET also list the host holding a copy pool resource. When RESET is specified, associated serialization fields are reset.