TR3271 Management Programming Manual

TR3271 EVENT MANAGEMENT
3: ZTR3-EVT-IOBUS-ERR
Volatile Tokens
ZEMS-TKN-CU is a standard EMS token that contains the controller
and unit number. This token is present in the event buffer only
if the controller uses subchannel-type I/O addressing.
Event-Message Text
In the text message, ldev corresponds to the value of ZEMS-TKN-
LDEV, n,n,%nn,%nnn corresponds to the value of ZEMS-MAP-EXIOADDR,
ldevname corresponds to the value of ZEMS-TKN-LDEVNAME, and file-
err corresponds to the value of ZTR3-TKN-FILE-ERR.
Probable Cause
An I/O-bus error occurred during a data transfer with the
indicated line. The TR3271 subsystem switches to the backup
process and aborts all requests. Note that the backup process
does not retry the operation once the switch has occurred.
The valid file-system error numbers given by the value file-err
in the text message must be in the range 214 through 229. The
values of file-err are as follows:
file-err Meaning
214 Channel timeout
215 I/O attempted to absent memory page
216 Memory breakpoint encountered
217 Memory parity error
218 Interrupt timeout
219 Illegal device reconnect
220 Protect violation
221 Controller handshake violation
222 Bad channel status from EIO instruction
223 Bad channel status from IIO instruction
224 Controller error
225 No unit, or multiple units assigned
For information on these file-system errors, refer to the
System Procedure Errors and Messages Manual .
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