On Tue, 23 Dec 2008 14:39:43 -0800, Schuh, Richard <[email protected]> wrot e:
>In looking at the VDISK Storage by User display (ESALPS) I noticed that >SYSTEM was the 10th largest user of VDISK during one interval, but fell >to 0 the next. What causes SYSTEM to show up as a user of VDISK? Perhaps >something in the DEFINE or DETACH processes? > >Regards, >Richard Schuh > > > I suspect this is an artifact of the vdisk design - the virtual storage behind vdisks is implemented as shared system-owned spaces. When a vdisk goes away, the vdisk address space can momentarily go through an oddball transient "system private" state, which may have been captured in that interval. Were vdisks being detached or vdisk users logging off right about then? - Bill Holder, z/VM Development, IBM
