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Conference csc32::consolemanager

Title:POLYCENTER Console Manager
Notice:Kits, Scans, Docs on CSC32:: as PCM$KITS:,PCM$DOCS:, PCM$SCANS:
Moderator:CSC32::BUTTERWORTH
Created:Thu Aug 06 1992
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1541
Total number of notes:6564

317.0. "PCM - LAT set BROADCAST" by CSC32::N_SCHENK () Fri Jul 22 1994 23:01

    Hello,
    
    PCM V1.5 running on OpenVMS dynamically creates the LTA devices for
    nodes set up to use the LAT transport.  The LTA devices appear to be
    set up with BROADCAST enabled as a terminal characteristic.  I have 
    encountered one customer so far that finds this undesirable.  Is there
    a reason why PCM has to set up the LTA devices like this?
    
    Thanks,
    
    Nancy Schenk
    CSC Customer Support
T.RTitleUserPersonal
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317.1CSC32::BUTTERWORTHGun Control is a steady hand.Sat Jul 23 1994 00:005
    Nancy,
      I sounds like an oversight in the SETCHAR/SETMODE QIO's. Of course Phil 
    will probably want *me* to fix it now....;-}
    
    Dan
317.2OPG::PHILIPAnd through the square window...Sat Jul 23 1994 12:168
>>      I sounds like an oversight in the SETCHAR/SETMODE QIO's. Of course Phil 
>>    will probably want *me* to fix it now....;-}

 Sure you can fix it if you want, stick it on your list of stuff to do.

Cheers,
Phil

317.3CSC32::BUTTERWORTHGun Control is a steady hand.Mon Jul 25 1994 19:218
    >Sure you can fix it if you want, stick it on your list of stuff to do.
    
    Ahhhhhhhhhhheeeemmmmmmmmm!!
    
    I uh... need source code access to do that ......;-}
    
    Regs,
      Dan
317.4OPG::PHILIPAnd through the square window...Mon Jul 25 1994 19:289

  I know you need access, thats why I only said stick it on your
  list and not my normal response of "I'll test your fix in the morning". ;-)

Cheers,
Phil

Patience, I'm still trying to get the new source system going properly.
317.5Spurious shutdown caused by broadcast messageGMTNET::SYSTEMSYSINIT-F-NOPAYRISEThu Nov 17 1994 11:2439
    
    	Hi,
    		I'll stick this here cos its relevant I guess....
    
    	VAXstation 4000 (GMTSNA) ,OpenVMS6.1,PCM 1.5...
    
    I had a C3 window open,with many console connections open.For some
    reason or other,I needed to reboot the PCM workstation.I initiated
    the reboot,without shutting down the C3,yeah I know,silly thing
    to do,but I did it anyway.Next thing I know,two of my  cluster nodes
    (MV3800's) had gone unreachable.When I looked,the shutdown braodcast
    messages had been "blasted" to all the consoles.Most of them had
    just read the message and barfed,but two of the VAXes actually
    interpreted the word shutdown <cr> and proceeded to shutdown !!
    
    See below
    				Any ideas ??
    
    						Mick
    --------------------------------------------------------------------
     $
     $ SHUTDOWN message on GMTSNA from user SYSTEM at _GMTSNA$FTA13:
      17:06:45
     %DCL-W-DEFOVF, too many command procedure parameters - limit to
    eight
     $ GMTSNA will shut down in 0 minutes; back up LATER.  Please log
    off node GMTSN
    A
     .
     %DCL-W-IVVERB, unrecognized command verb - check validity and spelling
      \GMTSNA\
     $ SHUTDOWN
    
    
            SHUTDOWN -- Perform an Orderly System Shutdown
                        on node DGMT01
    
                                                                        
    etc etc.....
317.6OPG::PHILIPAnd through the square window...Thu Nov 17 1994 11:306
  Hmm, do you have the ECO1 patch kit installed, I put a
  fix in for just this problem.

Cheers,
Phil
317.7How does the ECO prevent this from happening?CX3PST::ANASAZ::J_BECKERThere&#039;s no substitute for a good bootThu Nov 17 1994 16:5818
phil:
>
>  Hmm, do you have the ECO1 patch kit installed, I put a
>  fix in for just this problem.
>


It sounds to me the user had the 3xxx logged in and had a symbol for shutdown
defined in their logged in environment, so when the message to shutdown
appeared, the system reacted as requested.  Does your patch fix this or 
prevent this from happening?  How does it do this?  I would like to understand 
the mechanism.  


thanks for your time!

john becker
csc/cs
317.8OPG::PHILIPAnd through the square window...Thu Nov 17 1994 17:1915
John,

  The patch set the characteristics of the terminal line (be
  it a Direct, LAT, or Pseudo-Terminal) to NOBROADCAST. So,
  Any broadcast messages on the PCM host should not affect
  the managed systems.

  Now just because the user is logged in to the PCM host and
  connected shouldnt mean that the shutdown broadcast message
  reaches the remote console as it should only break through
  on the users sys$output which we do not accept any input
  from, we read and echo sys$input to the managed system.

Cheers,
Phil