Before I put something huge together to test this, I thought I¹d pass it by all the experts.
Linux has the ability to multipath, and z/VM supports multipathing via PAV. There¹s lots of documentation and studies showing that you can attach / dedicate the PAV addresses to a Linux LPAR or guest, and implement multipathing to DASD devices. This seems to be fairly clearly researched and understood. What I¹m wondering about would be multiple links to the same minidisk (partial 3390, as opposed to a full volume) backed by a PAV multi-address environment sustained by z/VM. Would it help I/O throughput to have multiple MW minidisks set up in Linux as multipathing, if they were on a DASD with PAV enabled, and having several physical addresses? Are there any got¹chas to this configuration? Any reason why it wouldn¹t work? -- Robert P. Nix Mayo Foundation .~. RO-OE-5-55 200 First Street SW /V\ 507-284-0844 Rochester, MN 55905 /( )\ ----- ^^-^^ "In theory, theory and practice are the same, but in practice, theory and practice are different."
