HP StorageWorks XP Remote Web Console Software - Manual (Page 157)

TrueCopy for z/OS user guide 157
Output Example: CQUERY
CGROUP (FREEZE/RUN) Support
The TC390 feature supports the CGROUP (FREEZE/RUN) TSO command for PPRC, which is also used in
IBM’s Geographically Dispersed Parallel Sysplex (GDPS) environment. The CGROUP TSO command is
used to control I/O operations for TC390 Synchronous pairs on a specific MCU-RCU pair. The CGROUP
command is supported for the XP128/XP1024/XP10000/XP12000 (and other XP disk arrays)
functioning as TC390 MCUs. The XP disk arrays provides all required host reporting for CGROUP
operations (for example, IEA494I with extended long busy (ELB) state), which is a key component of GDPS
operations. For disaster recovery implementations, you must use the XP128/XP1024/XP10000/XP12000
at both sites because the RCUs will become MCUs in the event of a disaster.
The CGROUP command has two parameters, FREEZE and RUN. The CGROUP/FREEZE command stops
all host I/O operations to the specified TC390 M-VOLs as well as all TC390 update copy operations to
their associated R-VOLs. The CGROUP/RUN command changes the pair status to suspended and allows
the M-VOLs to start accepting host I/Os.
NOTE: For 2105 controller emulation, do not use the FREEZE option. Use the CGROUP option of the
CESTPATH command (see ” CESTPATH ” on page 150).
*************** PPRC REMOTE COPY CQUERY - VOLUME *********************
* (PRIMARY) (SECONDARY)*
* SSID CCA SSID CCA *
*DEVICE LEVEL STATE PATH STATUS SERIAL# SERIAL# *
*------ --------- ---------- ----------- --------- --------- *
* 0A32 PRIMARY.. PENDING... ACTIVE.. 7700 32 7740 12 *
* CRIT(NO) A00SNG030982 000000030954 *
* PATHS SAID/DEST STATUS: DESCRIPTION *
* ----- --------- ------ ------------------- *
* 1 001D 0000 01 PATH ESTABLISHED... *
* ---- ---- 00 NO PATH............ *
* ---- ---- 00 NO PATH............ *
* ---- ---- 00 NO PATH............ *
* IF STATE = PENDING/SUSPEND: FIRST CYL OUT OF SYNC = 00117 *
* LAST CYL OUT OF SYNC = 03338 *
* PERCENT OF COPY COMPLETE = 004% *
**********************************************************************
Table 38 CQUERY output for serial and Fibre Channel
LINK Parameter Serial (ESCON) Interface Fibre Channel Interface
aa FREEZE option
0x00:keep the status
0x01:Enabled
0x02:Disabled
Bit 0-3: RCU controller ID
x2-xF: Number stands for RCU
controller ID.
Bit 4-7: FREEZE option
x0:keep the status
x1:Enabled
x2:Disabled
bb MCU port number (0x00-0x1f) MCU port number (0x00-0xff)
cc Link Adr (0x00-0xff) RCU port number (0x00-0xff)
dd CU number (0x00-0x1f) CU number (0x00-0xff)