On Wednesday, 03/25/2009 at 03:54 EDT, Dieltiens Geert <geert.dielti...@inf.vanbreda.be> wrote:
> I made that device available to a VM in another LPAR on the same CEC, and there > the IPL worked. > Our 3 LPARs share the same Escon channels to an EMC box. Each LPAR only uses > it's own set of DASD devices (the other devices are set offline according to > SYSTEM CONFIG "OFFLINE_AT_IPL"). > > In the production LPAR I see msgs like this on the OPERATOR console: > HCPMHT2153I DASD B03C I/O CANCELLED DUE TO A MISSING INTERRUPT > They started appearing since the moment that I IPL'd another VM in another LPAR > last weekend. I thought that maybe some devices were being used in both LPARs, > but I checked, and that's not the case. > > Maybe EMC can find out more... I have seen odd I/O incidents (tho not on EMC) when the number of devices defined in an I/O configuration exceeds the number supported by the control unit. E.g. every dasd chpid with every device on the chpid defined to all the LPARs. As soon as a device "beyond the limit" is used, it pulls the device away from whoever had it first. But working it through EMC will be good. Alan Altmark z/VM Development IBM Endicott
