> So I made a small modification to my patch and that was how I got the 4k > blocksize with VDISK. Personally, I don't think the label is all that > important when you get that much more throughput. ;-) But, since it's not > 100% correct, I can see why IBM didn't allow for it.
Oh, it would certainly be an advantage to have the diag250 interface use 4K blocks rather than 512. I fail to see why the diag driver was coded to insist on CMS block size equal to physical block size. It hurts for FBA and is a useless check for ECKD. Rob
