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5,14/daemon.doc
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DAEMON.DOC -- Changes from V21(772) to 22(1012)
May 1985
COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION
1971,1974,1978,1979,1980,1981,1982,1983,1986.
ALL RIGHTS RESERVED.
THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
TRANSFERRED.
THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
CORPORATION.
DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
DAEMON.DOC Page 2
DAEMON.DOC -- Changes from V21(772) to 22(1012)
May 1985
1.0 SUMMARY
DAEMON version 22 is primarily a maintenance release to support the
7.03 monitor.
2.0 EXTERNAL CHANGES
DAEMON V22(1012) has a slightly different naming scheme for renaming
AVAIL files at the end of a week. At the end of the week, DAEMON now
renames AVAIL.SYS to AVAIL.LWK (Last-WeeK) and renames any existing
AVAIL.LWK to AVAIL.ANN where "NN" is the next highest version number.
If AVAIL.A77 already exists, DAEMON will complain about it and will
not rename any files.
3.0 KNOWN BUGS AND DEFICIENCIES
None
4.0 INSTALLATION INSTRUCTIONS
DAEMON searches JOBDAT, MACTEN, and UUOSYM. To build DAEMON, type the
monitor commands:
.LOAD DAEMON
.SAVE DAEMON
Be sure to rename your previous version of DAEMON to DAExxx.EXE on
SYS: and then copy the new .EXE file to SYS:.
5.0 INTERNAL CHANGES
Edit #
773 AVAIL.SYS gets bad entries in it switching from 7.01(A) to
7.02. This is because we think the header for the AVAIL.SYS
working entry is the same length as the header for the
ERROR.SYS/AVAIL.SYS data entries. This changed with 7.02. Use
new symbol AWELEN where appropriate for dealing with the AWE.
Also, don't store EL.HED in working entry header.
774 Fix PEKDI6, where reading a KI paging crash would retrieve bad
addresses from crash file through PEKDSK.
775 Move CLRBFI from initialization code to right before the HIBER.
DAEMON.DOC Page 3
Helps avoid loops while debugging DAEMON on a terminal.
776 While we're in the code, combine the binary and source
copyright statements. Have them be on the first page.
777 Add system error block support as part of CI disk project.
Start version 22 here.
1000 Up the monitor version to 703
1001 MCO 11194, six character stopcode names. Stopcode name is now
in %SYSCD instead of %SYSPC.
1002 Bad range check at DSPERR, fixed.
1003 Do ORION messages when KLINIK events are logged
1004 In routine ERRFIN make DAEMON do multi-block output to
ERROR/AVAIL file so we don't write a partial entry if the
system crashes.
1005 In routine AVLAGE, rename LAST-WEEK'S AVAIL file to .Ann and
rename AVAIL.SYS to AVAIL.LWK (to make it the new LAST-WEEK
file). Complain if we already used AVAIL.A77.
1006 Since edit 1004, we get some entries in ERROR.SYS which are not
reflected in RIBSIZE. Perhaps the data was written but the
system crashed before the RIB was updated. Try to preserve
these entries when looking for EOF.
1007 Fix QUEUE. UUO argument block so WTO's aren't so messy.
1010 Do copyrights.
1011 First attempt to flag software-detected disk errors positively.
left half of 4 word ERRPT. block will contain a code to
indicate which of the several software-detected errors occur.
These include SAT errors, RIB errors, recovered transfer hung,
etc. all of these errors are detected in FILIO. this enlarges
the massbus-disk entry (11) by one word.
1012 Create new entry (code 74) for FILIO-detected CI disk error.
Similar to massbuss disk (code 11) entry, but without a lot of
useless information about controller status.
6.0 SUGGESTIONS
None.
[End of DAEMON.DOC]
DAEMON.DOC Page 4
[DMN21.DOC is appended as an integral part of DAEMON.DOC]
DMN21.DOC Page 5
DAEMON.DOC -- Changes from V20(757) to 21(772)
Jan 1983
1.0 SUMMARY
DAEMON version 21 contains major changes, both in content and in
philosophy, from version 20 which was shipped with the 7.01 monitor.
The significant changes are as follows:
It has become nearly impossible to continue supporting both the
current and previous versions of the monitor with each release of
DAEMON. The complexity of the code required and the difficulty of
complete testing has caused us to rethink the way we provide DAEMON
support for each monitor.
With this release, DAEMON will only provide support for the monitor
version with which it is released. We must obviously provide some
mechanism to support old monitors and this and all subsequent versions
of DAEMON will do so by invoking the previous version of DAEMON.
Since the previous version of DAEMON clearly supports the previous
version of the monitor, this seems like the idea solution to the "old
monitor" problem.
DAEMON determines if it is able to support the running monitor by
GETTABing %CNDAE and comparing the monitor version against an
assembled-in parameter. If the versions match, DAEMON continues
normally. if the monitor version is less than that expected by DAEMON
(or if the GETTAB fails), DAEMON assumes that the old version of
DAEMON is on SYS: as DAExxx.EXE, where "xxx" is the version number of
the old monitor. For example, if the 7.02 version of DAEMON was run
on a 7.01 monitor, it would invoke SYS:DAE701.EXE as the system
DAEMON. Therefore, each site must rename their 7.01 version of DAEMON
to DAE701 before installing the new 7.02 version.
Since the monitor and DAEMON find the system DAEMON by checking both
the name and the JACCT bit, DAEMON can't invoke the old DAEMON by
doing a RUN UUO. Instead, DAEMON opens the file by hand, interprets
the .EXE directory and reads the file into core. When the entire file
has been read in, DAEMON jumps into the ACs, BLTs the old DAEMON into
the locations in which it will run, returns unused memory, and starts
it at the normal starting address. This technique, while more
difficult than the RUN UUO, preserves both the program name and the
JACCT privilege.
If DAEMON invokes an old version, the following message appears on
device OPR:
[DAEMON: %DAEMON started on old monitor version]
[DAEMON: %Invoking SYS:DAE701.EXE as system DAEMON]
and indicates that DAEMON is invoking the old version.
Since this version of DAEMON doesn't support old monitors, it is not
DMN21.DOC Page 6
able to analyze crash dumps of old monitors. If it detects that a
crash dump is from an old monitor, DAEMON will issue a message to that
effect and abort the analysis of the crash file.
One of the largest advantages of not having to support old versions of
the monitor is that DAEMON can now take full advantage of new features
in the current version of the monitor. This version of DAEMON does
exactly that. We have placed all code that is not necessary for the
support of the 7.02 monitor under the FTUNSUPPORTED feature test
switch which is turned off. We chose to do this rather than deleting
the code from the source for reference purposes only. We have not
attempted to assemble DAEMON with the FTUNSUPPORTED feature test
switch turned on and we expressly do not support DAEMON with the
switch turned on. If you choose to turn the switch on, you do so at
your own risk. This feature test switch and the code that it
surrounds will be removed for the next release of the monitor.
This version of DAEMON no longer supports the DUMP or DCORE commands
(they have been removed from the monitor) or the .DCORE function of
the DAEMON UUO. The DCORE functionality doesn't lend itself well to
the virtual memory environment and the move to KL-PAGING made the
problems even worse.
All other monitor commands that used to invoke DAEMON have either been
removed or fully implemented in the monitor. This means that DAEMON
need not attach itself to users terminals and open itself up to
possible security violations. All code to do so has been placed under
the FTUNSUPPORTED feature test switch and thereby removed. DAEMON
will now detach itself at startup and remain detached.
DAEMON now takes full advantage of the monitor code to read and write
the swapping space if a JOBPEK is done on a swapped-out job. DAEMON
does not expect the JOBPEK UUO to fail (with the possible exception of
an address check) and will report such a condition if it occurs. No
attempt is made to read or write the swapping space if the JOBPEK
fails and all such code has been placed under the FTUNSUPPORTED
feature test switch.
If DAEMON detects a condition that it decides someone should know
about, it will output a message on device OPR and send the same
message to the GALAXY system using the WTO function of the QUEUE.
UUO. Every attempt has been made to provide as much information as
possible with the message to allow problems to be debugged.
This version of DAEMON supports both the KI-PAGING and KL-PAGING modes
for the running monitor and crash file analysis.
DAEMON support for FACT accounting has been placed under one master
feature test switch, FTFACT, in preparation for the move to usage
accounting. The feature test switch is turned on by default, but may
be turned off if FACT accounting is not desired. FACT accounting will
be turned off by default for the next monitor release.
This version of DAEMON has been tested under 7.02 on KL, and KS
processors and supersedes all previous versions. It will not run
DMN21.DOC Page 7
correctly on KI processors.
2.0 EXTERNAL CHANGES
See above
3.0 KNOWN BUGS AND DEFICIENCIES
None
4.0 INSTALLATION INSTRUCTIONS
DAEMON searches JOBDAT, MACTEN, and UUOSYM. To build DAEMON, type the
monitor commands:
.LOAD DAEMON
.SAVE DAEMON
Be sure to rename your previous version of DAEMON to DAExxx.EXE on
SYS: and then copy the new .EXE file to SYS:.
5.0 INTERNAL CHANGES
Edit #
760 Clean up the RP20 error reporting logic to make it less
dependent on assembled-in parameters.
761 Update edit number for 7.02, remove the FT603 conditional and
make some cosmetic changes.
762 Unconditionally link the state of FTCHKPNT to that of FTFACT.
You can no longer assemble DAEMON with FTFACT off and FTCHKPNT
on. This will allow us to turn off the FTFACT feature test
switch in preparation for the move to usage accounting.
763 Add the FT701 feature test switch that will surround code that
must exist for pre-702 monitors. The default value will be on.
The feature test switch and the code that it surrounds will be
removed on 703 ship.
764 Do some more general code cleanup.
765 Remove support for the SAVE and SSAVE commands. These commands
were only invoked by .SAV file writes for virtual programs.
766 Support KL-paging monitors; desupport E, D, VERSION, DCORE,
DMN21.DOC Page 8
and DUMP commands for 7.02 monitors.
767 SPR #32036 BCM 26-Mar-82
Increase the maximum number of CPUs we can report to the
current supported operating system maximum.
770 It has become nearly impossible to continue supporting both the
current and previous versions of the monitor with DAEMON. Fix
DAEMON to determine if it is running with a previous version of
the monitor and run the old version of DAEMON if it is. The
previous version is assumed to have a name of the form
DAExxx.EXE, where xxx is the monitor version, e.g., DAE701 for
the 701 monitor. We can also remove a great deal of code that
was necessary to support pre-702 monitors as a result. Instead
of removing this code completely from the source, it has been
placed under the FTUNSUPPORTED feature test switch. This
version of DAEMON has only been tested with that switch turned
off and we expressly do not support DAEMON with the switch
turned on. The switch is there strictly for reference purposes
and all code contained within the scope of the feature test
switch will be removed for the next release of the monitor.
771 Increase the size of the ERROR.SYS header to 5 words and add a
monotonically increasing sequence number in the new word.
DAEMON also writes the sequence number into the EOF word at the
end of the file when it writes an entry. Everytime it starts
up, DAEMON finds the EOF word in the file and uses that number
as the start for the new run. If it can't find the EOF mark in
the file for some reason, DAEMON will try to find the first
sequence number in the file. It then adds the size of the file
divided by the size of the smallest error entry to that number
and uses that as the sequence number. As part of this change,
DAEMON will continue to use ERROR.Xnn instead of ERROR.SYS if
it finds an .Xnn file. This means that the sequence numbers in
the files should start in ERROR.SYS and increase thru
ERROR.Xnn. note that this means that all ERROR.* files must be
processed as a unit. See the 7.02 beware file for more
information.
772 Symptom: The first entry in ERROR.Xnn is wrong size, and may
contain pieces of DAEMON code. Also, many re-sync pointers
generated.
Diagnosis: If you get an I/O error in ERRFIN while writing an
entry into the file, we create an ERROR.Xnn+1 file, and then
restart ERRFIN. unfortunately P4 (which should point to the
last word written into ERABUF), may have been changed into a
word count by ERFILL. When we get to ERFILL again, it tries to
convert P4 into a word count (again!). Things go down hill
from there.
Fix: Restore old value of P4 before restarting ERRFIN.
DMN21.DOC Page 9
6.0 SUGGESTIONS
None.
[End of DMN21.DOC]
[DMN20.DOC is appended as an integral part of DAEMON.DOC]
DMN20.DOC Page 10
DAEMON.DOC -- Changes from V17(732) to 20(757)
June 1980
1.0 SUMMARY
DAEMON version 20 is primarily a maintenance release to DAEMON with
fixes to version 17 which was released with the 7.00 monitor. It
contains some significant changes from the 6.03A version as described
in DMN17.DOC.
This version of DAEMON has been tested under 6.03A, 7.00, and 7.01 on
KI, KL, and KS processors and supersedes all previous versions.
2.0 EXTERNAL CHANGES
Save files may now be written into SFDs.
3.0 KNOWN BUGS AND DEFICIENCIES
Save files can only be written on a disk type device.
DAEMON files written by SAVE, DCORE, DUMP, and the like may not be
written to device LIB: or to a Logical Name device.
4.0 INSTALLATION INSTRUCTIONS
DAEMON searches UUOSYM and loads with no other files.
5.0 INTERNAL CHANGES
Edit #
733 Fix KLERR routine to correctly process entries on cpus other
than the boot CPU
734 Change the format of the ERPTBK table to use 4 word entries so
that the CPU number can be included in the error data returned
by the monitor.
735 Add support for new syserr entries for 7.01 monitor. these are
error types 51,52,54,55,56 and 57.
736 Fix data gathering problem in entry type 56.
737 Fix SBDIAG pointer in entry type 52
DMN20.DOC Page 11
740 Make another attempt at fixing the KLERR report.
741 FIX Ill Mem Ref in massbus error routine.
742 MONBTS now writes dumps that are not a contiguous physical core
image. Change PEKSPY to read and follow the .EXE directory
when reading words from the disk.
743 If a user ^C's DAEMON while it is writing a DUMP/DCORE/SAVE
file, DAEMON doesn't release the channel which causes the user
to get an FBM error when he trys to delete the TMP file.
744 Device OPR0 doesn't exist if FTNET is turned off or if a site
hacks their monitor. make DAEMON try harder to find a TTY to
TRMOP. to.
745 AVAIL has trouble figuring out when AVAIL.SYS started and when
it ended. Define 2 new entries, 46 and 47 which are the first
and last entries in AVAIL.SYS. These entries provide
timestamps for AVAIL.
746 Make processing of errors durring initialization cleaner.
747 Limit the number of entries made in the disk statistics entry
to avoid infinite error files if the UDB chains get screwed up.
750 Change DAEMON to use %CNSUP as the uptime instead of %NSUPT so
that it gets clock requests right if CPU0 isn't running.
751 Fix bug that caused error code 2 from JOBPEK when reading
fragmented core.
752 Add code to log RP20 disk device errors.
753 Fix routine "CHECK" to force a FACT.SYS update at each
checkpoint. This helps preserve more accounting data.
754 AVAIL.SYS update routines don't use ERRDEV and ERRPPN to do
their updates.
755 Fix routine "COMPRS" to avoid creating IOWDs over 128K.
756 Allow a user having POKE privileges to do the append to
ERROR.SYS DAEMON UUO function.
757 Look for crash files to process on the union of the system
search list and the system dump list.
6.0 SUGGESTIONS
None.
DMN20.DOC Page 12
[End of DAEMON.DOC]
[DMN17.DOC is appended as an integral part of DAEMON.DOC]
DMN17.DOC Page 13
DAEMON.DOC -- Changes from V16(612) to 17(732)
November 1979
1.0 SUMMARY
DAEMON version 17 is a major code rewrite from version 16. All of the
code specific to pre-6.03 monitors has been removed and all 6.03
specific code has been placed under a conditional. In addition, a
great deal of the code has been rewritten to fix bugs, remove bad
code, and update the code to 7.00.
This version of DAEMON has been tested under 6.03A and 7.00 on KI, KL,
and KS processors and supersedes all previous versions.
2.0 EXTERNAL CHANGES
Save files may now be written into SFDs.
3.0 KNOWN BUGS AND DEFICIENCIES
Save files can only be written on a disk type device.
DAEMON files written by SAVE, DCORE, DUMP, and the like may not be
written to device LIB: or to a Logical Name device.
4.0 INSTALLATION INSTRUCTIONS
See DAEMON.CTL, and DAEMON.DOC
5.0 INTERNAL CHANGES
Edit #
700 Add support for KS10 system error entries
701 Change the references to word 36 to .JBSYM (word 116). (Used
as the flag word for determining if a crash file has been
processed by DAEMON or not)
702 Fix magtape stats entry routine
703 (SPR 10-26436) Allow controller number to be reported to
SYSERR. Area affected: MBDVDN
704 Add code to log DX20 device errors. At present this means TU7x
DMN17.DOC Page 14
tape errors reported by TAPSER.
705 Remove all code specific to pre-603 monitors. This is the
first step in updating DAEMON for 701.
706 Add code to dump the CPU Status Block via error code 63
(.ESCSB)
707 Add code to dump the Device Status Block via error code 64
(.ESDSB)
710 Add code to send the date/time incremental change to %SIACT if
the system date/time changes. Invoked by subfunction 3 of
error code 15.
711 Bring all the code up to 7.00 level. Also fix a large number
of bugs in the error reporting code.
712 Add code to log software events of interest via code 14.
713 Rewrite miscelaneous parts of the code to clean it up and fix a
lot of bugs.
714 To be able to measure some sort of generic "availability" for a
system, make DAEMON wake up every 6 minutes and look around to
see what the system state is. Log this information to a new
file, SYS:AVAIL.SYS.
715 For systems with JOBN+SEGN-1 .GT. 511 (7.00 remember), the
GETTAB simulation fails for tables indexed by job or segment
number if the index is larger than 511. NUMTAB only has 9 bits
for the maximum tables size. the monitor uses JBTMXL
explicitly for such tables.
716 For systems with a large number of (possibly dual ported)
disks, error code 5, information extracted from a crash may
overflow while writing the entries for each disk. Remove the
disk stuff from error code 5 and write a new entry (45) which
contains the information.
717 Log node on and off-line via sub-codes 6 and 7 of the
configuration status change entry.
720 If the ERPTBK table in a crashed monitor is full and EPKIDX is
0, DAEMON will loop processing the entries. Redo the code at
READCR to avoid this problem.
721 DAEMON may reattach the wrong job to a terminal after
processing a request if the user attaches and logs out the job
doing the request and another user logs in and detaches before
the request is completed. Don't reattach a job to a terminal
if the job's login time doesn't match that saved at the start
of the request
722 Fix problem where DAEMON was returning a UUO error code while
DMN17.DOC Page 15
processing hardware errors.
723 If an error occurs when DAEMON is detached, the error message,
if any, is thrown on the floor. Use TRMOP. function .TODSP to
print the error message on device OPR.
724 Avoid problems with users getting a [1,2] job by always setting
DSKFUL ERROR when DAEMON starts up.
725 Since the 700 monitor is capable of changing the active
swapping list on the fly, we can no longer read SWPTAB when
DAEMON starts up. Read the information from SWPTAB on each
request to read/write the swapping space.
726 TC10C tape errors are reported by SYSERR as DX10 errors. the
device code for TC10Cs is 724 and DAEMON assumed that any
device code larger that 540 was an RH20. A complementing bug
in SYSERR then turned that into a DX10 error report.
727 Fix bug in PEKUSR that caused swap pointer inconsistencies
while reading funny space addresses.
730 Fix random error code 3 failures in DAEMON UUO fact function
caused by releasing the job without processing it if JS.DPM was
set.
731 Yet another security fix to prevent a user getting a [1,2] job.
732 Fix routine to dump KS10 halt status block.
6.0 SUGGESTIONS
None.
[End of DMN17.DOC]