On Wednesday, 05/26/2010 at 10:06 EDT, Bob Atton <bob.j.at...@rrd.com> wrote: > We have had a very strange and unusual message today on our z/VM 5.4 system. > > I had a report that our zLinux guests were not accessible (putty, ping, ssh all > no good). I logged on to MAINT OK but soon after when I had issued a command I > got the following messages. > > 10:29:47 * MSG FROM MAINT : DMSITM319T Machine check interrupt was > encountered; MCIC = X'4002AFBD 400B0000 00000000 00000000' > 10:29:47 * MSG FROM MAINT : DMSITM319T Disabled wait entered, please re-IPL > CMS. > HCPGIR450W CP entered; disabled wait PSW 000A0000 817C009E > > CMS would not IPL but I could IPL 190.
D'oh: One other thing, check the operator's console for paging errors (paging volume or spool). > When I tried to start the zLinux guests they initially failed with the messages > above because they IPL CMS but when I IPLed 190 and ran the profile etc to > start linux I saw > > HCPMCV1459E The virtual machine is placed in check-stop state due to a system > malfunction with CPU 00. The machine check above is what you would get if the guest had page 0/1 resident when the paging error occurred. You can get this if CP cannot page in guest page 0 or 1 in order to store PSWs and logout data in order to present said machine check. I do wish CP was just a tad more specific than simply "system malfunction". Alan Altmark z/VM Development IBM Endicott
