This operation reports
the storage control sessions that exist for a device. You can perform
this operation regardless of whether XRC or concurrent copy is active
on the system. You may only issue the MODIFY command with the DVCDATA
operation from a system which has the ANTAS000 address space active.
Specify the device address for the device for which you want session
information. The storage control Licensed Internal Code (LIC) must
at least support concurrent copy.
Example: Issue the following command to list the existing
sessions for the device F40:
F ANTAS000,DVCDATA F40
Result: Possible output in response to this command would
be:
ANTX8965I F40 XA01
This means that storage control
session 1 is an active XRC session.
The operation output contains: the system data mover message number,
ANTX8965I; the specified device (in this case, it is F40); and an
individual session report about each session for the specified device
(in the example, it is XA01), which includes the following information:
- Type of storage control session
- Status of storage control session
- Storage control session number
- Host connection status
This information for each session has a format of
tsnnc,
where the following apply:
- t
- C = concurrent copy session, X = XRC session.
- s
- A = active session, S = suspended session, Q = quiesced session,
T = timed-out session.
- nn
- The storage control session number.
- c
- The connection status of the storage control session, as known
by the system that issued the command. If c is
blank, this host processor owns the session. If c is "*",
another processor owns the session. If c is "?",
this host processor owns the session, but may or may not have access
to the session.
Results: Typical responses for this command are:
- ANTX8965I F40 XA01—This means that storage control session 1 is
an active XRC session.
- ANTX8965I F40 CA02—This means that storage control session 2 is
an active concurrent copy session.
- ANTX8965I F40 - CA03 XQ04—This means that there are two storage
control sessions: Session 3 is an active concurrent copy session,
and Session 4 is a quiesced XRC session.
- ANTX8966I F40 NO SYSTEM DATA MOVER STORAGE CONTROL SESSIONS—This
means that there are no sessions for the storage control that is associated
with device F40.
Note: If errors occur, this command might also issue I/O error messages.