Hi,
I am having trouble configuring SLES 12 to logoff the z/VM guest when it shuts
down (in some situations). In SLES 11 I updated the parameters in
/etc/zipl.conf and specified 'vmpoff=LOGOFF' and also modified the ctrl-alt-del
line in /etc/inittab from
ca::ctrlaltdel:/sbin/shutdown -r -t 4 now
to
ca::ctrlaltdel:/sbin/shutdown -h -t 4 now
The z/VM guest is automatically logged off with the above if the 'shutdown
-h..' command is issued from Linux or if 'signal shutdown guest-name within
...' from an authorized z/VM guest. By automatically logged off I mean that
the z/VM login screen is displayed if you are connected to the guests console.
With SLES 12 /etc/inittab no longer exists - because systemd is now used where
systemv was used in prior releases. I modified the zipl parameters, which were
incorporated into the grub2 parameters, and specified 'vmpoff=LOGOFF'. Issuing
Linux's 'shutdown -h...' command causes the guest to log off from z/VM.
If I issue the 'signal shutdown..' command Linux shuts down but the guest is
not logged off - the last line on the console is the disabled wait PSW
HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 00000FFF
I need for the guest to log off when a 'signal shutdown' is issued. My
production system only uses mainframe dasd (mirrored) and we shutdown all
production servers (via a REXX EXEC) just after midnight on Friday night to get
a clean backup of the dasd. After the servers come down, Operations runs a
batch job on z/OS to break the mirrors and when this job completes (after a few
minutes) they reply to a prompt issued by the REXX exec which then boots all
of the servers. The mirror for each volume is reconnected when the FDR backup
on z/OS completes for that volume. If the guest does not log off, the
'xautolog guest-name' command fails
xautolog lnxadmin
HCPLGA054E Already logged on LDEV L0005
A Novell technician pointed me at an IBM manual, "Device Drivers, Features, and
Commands on SUSE Linux Enterprise Server 12", which mentions a relatively new
command called chshut. It aappears that it was introduced with one of the SLES
11 Service Packs. I've issued the following chshut commands but a 'signal
shutdown' still does not cause the guest to log off:
chshut halt vmcmd LOGOFF
chshut poff VMCMD LOGOFF
After issuing the commands I display the settings with 'lsshut'. It shows
Trigger Action
========================
Halt vmcmd ("LOGOFF")
Power off vmcmd ("LOGOFF")
Reboot reipl
Restart kdump,stop
Panic kdump,stop
When I reboot the server the Action for the 'Halt' setting once again is set to
'stop'.
I have also tried to modify how systemd handles the 'signal shutdown' and this
change also does not log the guest off. Maybe I'm not doing something
correctly? These are the commands that I've issued (which I found via Google
searches).
cd /usr/lib/systemd/system
rm ctrl-alt-del.target
ln -s poweroff.target ctrl-alt-del.target
rm halt.target
ln -s halt.target ctrl-alt-del.target
systemctl daemon-reload
I've read about systemd and found that a better way may be to copy files to
/etc/systemd/system and make my changes there (so that they aren't 'lost'
if/when maintenance is applied to systemd). I will do that once I get the
shutdown to work properly.
My SLES 12 server has had maintenance applied up to around 10:00 AM on 12/17.
It is running on a z/VM 6.3 non-SSI system.
Any ideas?
Harley Linker
HARLEY LINKER JR.
Sr. Systems Programmer (z/Linux, z/OS, z/VM)
[Acxiom_IT_color]
Acxiom Corporation
EML harley.lin...@acxiom.com<mailto:harley.lin...@acxiom.com>
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