HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

IEA494I and IEA491E console messages
When a pair is suspended, whether user-requested or caused by failure, the MCU generates sense
information to notify the hosts. If the PPRC ERP PTF is installed and PPRC support by host = Yes is
selected on the CU Option dialog box, this notification results in an IEA494I system console message
and an IEA491E message. The IEA491E message indicates the reason for suspension. The IEA494I
and IEA491E messages are generated by the zSeries and S/390 host based upon SSBs (sense
bytes) from the storage system and not SIMs from the storage system. Therefore, SIMs reported by
the storage system to the host are not used by the GDPS scripting.
The IEA494I message is recommended as a trigger for automation over the IEA491E message.
The IEA491E message is reported to only the host system that issued the IO operation that detected
the error, whereas the IEA494I message is reported to all attached MVS LPARs that have the device
address online each time the P-VOL pair status changes. GDPS uses the IEA494I message with
extended long busy as a trigger for CGROUP (FREEZE/RUN).
If PPRC support by host = No is selected on the CU Option dialog box, the host generates the
system console message that includes the SIM instead of the IEA494I or IEA491E message.
IEA494I message
When a Cnt Ac-S Z pair status changes, with the exception of the transition states suspending and
deleting, the MCU reports state change interrupt (SCI) to all hosts. In response to the SCI, the
IEA494I system console message is generated (if supported by the host). The XP P9500 reports
SCI for both online and offline devices, but the host system does not generate console messages
for offline devices. Therefore, the IEA494I message is never generated with an S-VOL device
address.
• The MCU reports SCI for all P-VOLs that are in the SCP state due to the CGROUP/FREEZE
command. The following example shows an IEA494I message indicating the extended long
busy state:
IEA494I 0FC3,RD0FC3,PPRC PAIR SUSPENDING,SSID=0FC0,CCA=03, EXTENDED
LONG BUSY STATE
• The MCU reports SCI for all P-VOLs that are suspended due to the CGROUP/FREEZE command.
This IEA494I message indicates the extended long busy state.
• When the FREEZE option is enabled, the MCU reports SCI for a pair that is suspended due
to a failure. When the host supports GDPS, this IEA494I message with extended long busy
triggers the CGROUP (FREEZE/RUN) command.
IEA491E message
When a pair is suspended due to a failure, the MCU reports SCI and unit check status and sense
bytes with F/M = FB. In response to the F/M=FB sense bytes, the IEA491E system console message
is generated (if supported by the host). The following is an example of an IEA491E message:
IEA491E DSLFC0,PPRC SUSPENDED, SECONDARY NOT READY,
INTERVENTION_REQUIRED,(PRI)SER=0113-90797,CCA=00 (SEC)SER=0113-90217,CCA=
120 Pair operations using PPRC