[LTP] [PATCH v2] kernel/fs/fsnotify-stress: fsnotify stress test

[Murphy Zhou]

Hi Petr,

On Thu, Mar 3, 2022 at 11:22 PM Petr Vorel <pvorel@suse.cz> wrote:
>
> > This is a stress tests that exercises fanotify and inotify interfaces
> > while IO going on. It ignores some failures of syscalls to let the
> > stress go on. If the kernel does not panic or hang after a certain
> > period of time of testing, test pass.
>
> > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > ---
> > v2:
> >       Merge all into one C programme.
> >       Changed dirname of the testcase.
> >       Run fs_racer.sh from this.
> Also tests in testcases/kernel/fs/racer/ are very old scripts with questionable
> code quality. I would not use them with new tests.  Not sure whether these tests
> are useful at all, but if yes they please take the idea and implement it in new
> C API, so that they can be called by forked thread.

Fair enough. I'll test to see if this part is necessary.

Thanks!

>
> Why C? Running shell test from C is probably not acceptable. We have enough
> problems with shell tests which use C binaries. Doing it vice versa can bring
> even more problems.
>
> fs_racer.sh runs many times fs_racer_file_create.sh, which mainly does:
> dd if=/dev/zero of=$DIR/$file bs=1k count=$SIZE
>
> => nothing hard to implement in C.
>
> Kind regards,
> Petr