Re: [LTP] [PATCH 1/3] ioctl_ficlone02.c: set all_filesystems to zero

[Petr Vorel <pvorel@suse.cz>]

> Hi!
> > > > It's a nice feature to be able to force testing on filesystem even it's set to
> > > > be skipped without need to manually enable the filesystem and recompile.
> > > > (It helps testing with LTP compiled as a package without need to compile LTP.)
> > > > Therefore I would avoid this.

> > > I guess that this should be another env variable e.g.
> > > LTP_FORCE_SINGLE_FS_TYPE and it should print a big fat warning that it's
> > > only for development purposes.

> > Well, LTP_SINGLE_FS_TYPE already has "Testing only"

> That was maybe how we intended it but we exposed the API and it seems
> that there is a usecase for it so people are possibly using it.

> > and that was the reason it just forced filesystem regardless "skip"
> > setup. Sure, we can turn it into "normal" variable and introduce
> > LTP_FORCE_SINGLE_FS_TYPE if it's needed.  But that would be an use
> > case if anybody uses LTP really to test particular filesystem. And it
> > would affect only .all_filesystem tests (e.g. user's responsibility
> > would be to point TMPDIR to that particular system on non-
> > .all_filesystem tests).

> There is a usecase we haven't figured out, when you want to test a
> single filesystem, you do not want to waste time on the rest of the
> filesystems and LTP_SINGlE_FS_TYPE nearly works for that usecase.

Yes, I understood this use case, this was probably the reason of this PR.
I'd appreciate Zorro's confirmation we understood him properly (e.g. that
somebody really needs this). I suppose you vote for this feature anyway
and it's fairly simple, thus I can prepare it.

Kind regards,
Petr