IOS210I

Explanation
The system displays this message when a path recovery-related
error occurs and the installation has specified PATH_SCOPE=CU option
in the IECIOSxx member of SYS1.PARMLIB or via the SETIOS command.
The system will attempt to vary the channel path offline for all devices
on the control unit.
In the message text: chp
The channel path identifier (CHPID) that encountered the path
recovery error.
cccc
The control unit for the device that encountered the path recovery
error.
rsntext
The reason why the channel path is being varied offline. One of
the following: LINK RECOVERY THRESHOLD REACHED
The hardware FICON® link
recovery threshold has been reached and the path is no longer available
to all devices on the control unit. This message may be preceded by
message IOS2001I or IOS2002I.
PATH ERROR THRESHOLD REACHED
The system has determined that the number of errors on a path
over a period of time has reached an installation-specified threshold
and the path needs to be taken offline to all devices on the control
unit. This message may be preceded by message IOS050I or IOS051I.
DYNAMIC PATHING ERROR
The system encountered an error on a path while validating a dynamic
pathing device. As a result of the error, the path was taken offline
from all devices on the control unit. This message may be preceded
by message IOS450E.
REQUESTED BY DEVICE ERP ROUTINE
The device support error recovery procedure routine requested
that control unit path error recovery be performed. As a result, the
path is taken offline from all devices on the control unit.

System action
The system attempts to vary the path offline to
all devices on the control unit. If the reason text does not indicate
LINK RECOVERY THRESHOLD REACHED, the path will not be taken offline
to a particular device if it is the last path to the device and the
device is online, reserved, assigned, or in use by a system component.
Otherwise, the path is not operational to all devices for the control
unit, so the path will be taken offline.

Operator response
Once the problem that caused the path-related
errors to occur has been corrected, you must bring the path online
manually; the path is not automatically varied back online by the
system. To bring the path back online, issue one of the following
commands: VARY CU, VARY PATH, or CONFIG CHP. It is recommended that
you first vary the path online to a single device to ensure that the
problem has been corrected before varying the path online to the remaining
devices.

System programmer response
Correct the errors that caused the
path to be taken offline and vary the path back online. See the associated
error messages for guidance on how to identify and correct the error.

Source
Input/output supervisor (IOS)

Module
IOSVIOPH

Routing code
2

Descriptor code
12