If a user greatly reduces their file usage, you can create a new home
directory, copy the remaining files over, and release the old directory.
If it's a separate z/OS file system, you get the space back.

On Tue, Aug 8, 2023, 07:11 Jack Zukt <jzuk...@gmail.com> wrote:

> As someone pointed out, it is only one more user file and I suppose that
> you no not manage your space by restricting the number of user files. As it
> has also been noticed, it can, and will be HSM migrated.
> And when you delete a RACF userid the zfs file goes with all the others,
> there is no USS directory to be located and deleted.
> Never looked back after we implemented it a few years ago.
> Best wishes
> Jack
>
>
> On Tue, Aug 8, 2023, 00:27 Andrew Rowley <and...@blackhillsoftware.com>
> wrote:
>
> > On 8/08/2023 12:37 am, Jon Perryman wrote:
> > > Automount was created specifically to address some filesystem
> > > blemishes. There's a problem they needed to solved and they allowed
> > > people to continue without the use of automount. For those who choose
> > > automount, they decided that with all its faults, it solved more
> > > problems than it created.
> >
> > IBM didn't create automount. It was a standard unix thing before IBM did
> > unix. IBM just came up with the idea of HSM migrating home directories
> > as a use case.
> >
> > The primary problem with individual filesystems is that freespace
> > doesn't get returned to the system. Deleted a file? The space still
> > can't be used by someone else. If you accidentally fill up your
> > filesystem, when you delete the file after all those "growing
> > filesystem" messages: congratulations, you own the empty space.
> >
> > The secondary problem is that migrating filesystems makes file and
> > directory level management impractical.
> >
> > # du --sh /home/*
> >
> > # find /home -size 2G
> >
> > Don't even think about it, unless you like HSM recalls.
> >
> > File level backup also gets complicated when filesystems are migrated.
> >
> > Pretty much all the problems that automounted individual filesystems are
> > supposed to solve are actually a result of having individual
> > filesystems. They don't have to be solved on other platforms because
> > they didn't create them in the first place (or there is a better
> > solution e.g. quotas).
> >
> > --
> > Andrew Rowley
> > Black Hill Software
> >
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