Proper Shutdown Sequence for TOPS-10 under TS10

Douglas H. Quebbeman

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May 13, 2001, 10:06:16 AM5/13/01

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TSSIA...

Currently, I'm just taking timesharing down, logging out,
and then exiting the emulator. Should I be doing something
else? I was never an operator on a DEC-10, just another
student/staff user (we had a 1080 running TOPS-10 6.02a
that had been upgraded from a KI10 with 32+64 to a KL10
with a (currently unknown) memory configuration... this was
at IUPUI...

-dq

John Sauter

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May 13, 2001, 11:46:30 AM5/13/01

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When I was supporting a KA10 I once asked the wizards
at DEC this question. We concluded that it would be
sufficient to log off all jobs and then halt the processor.
This was the 4-series monitor, though, and things might
have changed.
John Sauter (J_Sa...@Empire.Net)

jmfb...@aol.com

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May 14, 2001, 4:20:01 AM5/14/01

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In article <3AFEAC56...@Empire.Net>,

John Sauter <J_Sa...@Empire.Net> wrote:
>When I was supporting a KA10 I once asked the wizards
>at DEC this question. We concluded that it would be
>sufficient to log off all jobs and then halt the processor.
>This was the 4-series monitor, though, and things might
>have changed.

The Operator's Manual should have a blurb about graceful shutdowns.

Remember the message that would type out on all terminals...

Timesharing ends in n minutes

/BAH

Subtract a hundred and four for e-mail.

those who know me have no need of my name

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May 14, 2001, 8:56:08 AM5/14/01

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<9dod95$2ln$3...@bob.news.rcn.net> divulged:

>The Operator's Manual should have a blurb about graceful shutdowns.

type ``shutdown'' to the kl parser or ``sh'' to the ks mpu console.

>Remember the message that would type out on all terminals...

if galaxy is around then:

.r opr
*set ksys date/time or ``now''

or

.r opr
*enter config
*shutdown comment...

all of which just (eventually) deposit -1 in location 30 (octal).

--
okay, have a sig then

Timothy Stark

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May 14, 2001, 9:59:08 AM5/14/01

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For TS10 Emulator, on TS10> promot, enter 'HALT' command to shut down
system immediately. It returns back to BOOT> Prompt.

-- Tim Stark

--
Timothy Stark <>< Inet: swo...@speakeasy.org
--------------------------------------------------------------------------
"For God so loved the world, that he gave his only begotten Son, that
whosoever believeth in him should not perish, but have everlasting life.
Amen." -- John 3:16 (King James Version Bible)

Douglas H. Quebbeman

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May 14, 2001, 11:33:29 AM5/14/01

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<jmfb...@aol.com> wrote in message news:9dod95$2ln$3...@bob.news.rcn.net...

Yeah, SET KSYS in OPR, I've got that... my concern was ensuring
everything's been written to disk before shutting down. Perhaps
this was simply never a problem with TOPS-10?

-dq

Joe Smith

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May 14, 2001, 4:10:34 PM5/14/01

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In article <3afff...@news.iglou.com>,

Douglas H. Quebbeman <dhque...@theestopinalgroup.com> wrote:
>Yeah, SET KSYS in OPR, I've got that... my concern was ensuring
>everything's been written to disk before shutting down. Perhaps
>this was simply never a problem with TOPS-10?

Not as much as other Operating Systems.

When you create a new file, the ENTER UUO does not return to the
user until after all related disk I/O is done. (Rewrite the data
block in the UFD that points to the new file, rewrite the SAT block
that says this disk cluster is in use, write out the disk block
with the new RIB, showing a zero-length file).

When you CLOSE a file, the UUO does not return until the data on
the disk is completely consistent.

Long-running programs that create log files (such as OPSER) would
usually hold a one-block buffer in memory, and when that was full,
open the log file for appending, write the one block and close
the file. This way the log file would survive an unexpected halt.
-Joe
--
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