Explanation
AOM Library Services (LIBSERV) has detected a tape
library error condition. In the message text:
- libid
- The 5-digit library identifier (serial number).
- text
- One of the following:
- RETURNED INCORRECT AFFINITY DATA
- Affinity data is only used for the 3494 and 3495
tape library. This error message indicates that an installation error
or microcode error has caused the 3494 or 3495 to report incorrect
volume affinity data. Volume affinity data is an ordered list
of subsystem port ids that are used by host software to control device
allocation. The ordered list allows the library manager (LM) to direct
host allocations to the most appropriate subsystem. The error that
has been detected is that the port IDs in the affinity list do not
match those that are known to the host. Port ids that are known to
the host are obtained from the library during IPL or device VARY.
As an example, if the library contains subsystems with port IDs 01,02,03,04,
those port IDs would be known to the host, and an ordered list from
the LM might correctly contain 03,02,01,04. The correct list indicates
that a device from subsystem 03 should be allocated if possible, followed
in preference by 02, 01 and 04. In the error case, the ordered list
from the LM might incorrectly contain 03,04,05,06. Because port IDs
05 and 06 are unknown to the host, they cannot be used.
- DEVICE(dev) FOUR MINUTE I/O TIMEOUT,REQUEST=request-type,CMDCODE=command-code,CMDORDER=command-suborder,CMDTYPE=command-type
- A library request was issued to library (libid)
using device (dev) and the I/O for the request
did not complete within 4 minutes. The system will attempt to recover
the failed I/O by selecting another device in the library. If the
I/O is successfully recovered, no permanent error is posted. However,
if a second 4 minute timeout occurs, a second IEA439I message is issued
and the library request is posted in error. In the
message text, the following diagnostic data is displayed, as appropriate
for the command, with zeroes being displayed if a value is not applicable:
- request-type = 1-byte library (LIBSERV) request
type
- command-code = 1-byte command code
- command-suborder = 1-byte command suborder
code
- command-type = 1-byte command information
type
- DEVICE(dev) 6D STATE SAVE ISSUED
- dev
- The device number of the failing ATLDS device.
To help diagnose the cause of the 6D DEMOUNT error,
an X'87' CCW was issued to the device in order to obtain
a hardware state save. In order for an X'87' CCW to cause
a state save, the hardware service representative must have first
prepared the hardware to take state save.
Recovery Action:
- For INCORRECT AFFINITY DATA, contact your hardware service representative
to resolve the cause of the incorrect volume affinity data. After
the error condition is corrected, the host begins to use the corrected
LM affinity list (host IPL is not required).
- For FOUR MINUTE I/O TIMEOUT, if this condition persists, contact
your hardware service representative to resolve the cause of the 4
minute timeouts.
- For DEVICE(dev) 6D STATE SAVE ISSUED, in order to
obtain diagnostic data, should more 6D demount errors occur, have
the hardware representative prepare the device to take state save.
System action
- For INCORRECT AFFINITY DATA, allocations will not fail. Library
allocations are made using a software generated 'affinity' list. The
generated list will contain all of the port ids available to the system,
in the order that they were initialized. Because the affinity list
provides load balancing in the library, until the error is corrected,
library performance can be affected.
- For FOUR MINUTE I/O TIMEOUT, if the I/O is successfully recovered
then there is no impact on the system (other than the 4 minute delay).
If the retry of a FOUR MINUTE I/O TIMEOUT receives another FOUR MINUTE
I/O TIMEOUT, the I/O request is posted in error. The impact of the
error on the system depends on the library request that failed and
which component made the request. Refer to additional messages issued
by the system component that made the request.
- For DEVICE(dev) 6D STATE ISSUED, the system will
continue to use the device. If a volume is found to be mounted when
the device is next used, the volume is demounted.
Source
AOM Tape Library Services(LIBSERV)
Module
Routing code
Descriptor code