Given the lack of direction, I suppose that you can do almost anything, so long as you are consistent. There is no right or wrong, so logging off will work so long as the watchdog machine does not bring logged off users back on. Is there any way for a user to determine if it is being targeted alone, by a "signal shutdown user userid" or is included in a "signal shutdown all"? I suspect not, but I can see where that might be useful at times. Also, CP does notice when a user who has requested the shutdown signal logs off and cancels the request, does it not? It must because a virtual machine can log off at any time, regardless of the shutdown signal, and CP has to handle it correctly. Does CP disallow new logons when it receives "signal shutdown all" command?
Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Alan Altmark > Sent: Tuesday, June 28, 2011 1:56 PM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: SHUTTRAP > > On Tuesday, 06/28/2011 at 03:10 EDT, "Schuh, Richard" > <rsc...@visa.com> > wrote: > > No only is it not obvious, so far I have been unable to find it in > > the documentation. You can specify a wait state code on the > SHUTDOWN > > command > and > > it can be anything between 1 and FFFF. I cannot find where > the default > is FFF. > > Is that a true system default or is it a code you have adopted for > > your > use? > > You will not find any published information on the mechanism. > > I *observe* that if you SIGNAL SHUTDOWN to a 2nd level VM, it > will load wait state FFF and the SIGNAL SHUTDOWN command > gives a "successful termination" message. > > Draw your own conclusions. > > Alan Altmark > > Senior Managing z/VM and Linux Consultant IBM System Lab > Services and Training ibm.com/systems/services/labservices > office: 607.429.3323 > mobile; 607.321.7556 > alan_altm...@us.ibm.com > IBM Endicott >
