On 16 September 2013 19:48, John McKown <[email protected]> wrote: > HFS UNIX filesystems are supported in the OMVS address space itself. zFS > filesystems are supported in a colony address space called ZFS.
In passing, there is no strong connection between running a filesystem in the UNIX kernel address space or in a colony address space. Most file systems can run in the kernel, and all can run in a colony, unchanged (as the book says). Only those that use a particular colony thread service cannot run in the kernel. There are pros and cons to each environment. > Why not support another filesystem type, allocated on the "unit record" FBA > device, > in another colony address space? Perhaps even a z/Linux formatted > filesystem such as ext4 or btrfs. In this case the single user only > allocation is a moot point since all filesystem I/O would be done by the > colony address space. Nothing technical stops you from writing one. You can certainly do it in C or assembler, and who knows - maybe in some other languages that don't have too much run-time baggage. Tony H. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
