Joe Poole wrote: > I should think, however, that the best mediator of I/O conflicts > would be z/VM itself, working the multiple exposures on behalf > of the Linux images at a different level.
That would be true if you were running one single-threaded application on multiple Linux guests under VM. However, in the case where you are running multiple applications, or multithreaded applications doing simultaneous disk access, Linux will serialise those accesses if it cannot do PAV itself. Cheers, Vic -- Vic Cross Networking, Linux, for zSeries and S/390 Independent Systems Integrators Pty Ltd
