10/09/92 io_error_summary

Syntax as a command:  io_error_summary {-control_args}


Function:  scans the syserr log and summarizes I/O errors in a brief
report.


Control arguments:
-channel, -chn
   reports per channel status information for each device. The
   channel is displayed following the device name.
-cylinders, -cyl
   separates the disk device error by cylinder, head, sector and
   record. Only disk_control syserr messages can be separated.
-detailed_status, -dtst
   displays detailed status if available.
-device STRs, -dv STRs
   reports information for the device(s) named, where STRs are device
   types ("prt") or device names ("prtb").


-for T
   computes the ending time from the starting time, where T is a
   relative time (such as "1 hour").
-from DT, -fm DT
   starts scanning the log at the date/time given.
-hex_detailed_status, -hxdtst
   displays detailed status in hexidecimal if available.
-io_command, -ioc
   display the I/O command that was being executed when the abnormal
   status occurred.  The command will be displayed in octal, in
   parenthesis, prior to the interpreted status.
-status status_list, -st status_list
   reports information for the IOM status listed, where status_list is
   the IOM major and substatus ("0310" or "4310").


-tape_data_bit_in_error, -tdbie
   displays the data bit(s) in the detailed status that were in error.
-to DT
   stops scanning the log at the date/time given.


Access required:  Read permission is required on the log segments
themselves and status permission is required on their containing
directories.


Notes:  If -from DT is not specified, the scan starts with the earliest
message in the syserr log.  The ending time can be specified by using
-for, or -to, but not both.  If both are omitted, the scan terminates
with the last message in the log.  All dates and times must be in a
format acceptable to convert_date_to_binary_ described in the Multics
Subroutines and I/O Modules manual, Order No.  AG93).


                                          -----------------------------------------------------------


Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

                                          -----------------------------------------------------------

Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved