[LTP] [PATCH v2 04/15] lib/tst_test: Add .all_filesystems flag

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> > > 3) fs_fill test is still quite verbose
> > > 
> > > # ./fs_fill > log2 2>&1
> > > # du -h log2
> > > 688K	log2
> > > 
> > > # grep Got log2
> > > fs_fill.c:96: PASS: Got 5713 ENOSPC
> > > fs_fill.c:96: PASS: Got 9 ENOSPC
> > > fs_fill.c:96: PASS: Got 1709 ENOSPC
> > > 
> > > I'm running this on single CPU KVM guest, which is (presumably due to
> > > caching
> > > and host SSD) able to trigger ENOSPC many times in those 2 seconds.
> > > 
> > > I expect baremetal systems with many CPUs producing lot of output as well,
> > > because we start tst_fill_fs() in NR_CPU+2 threads.
> > 
> > Okay. What about rewriting the main loop to sleep in short intervals and
> > check the ENOSCP counter and exit if reasonably large number was found.
> 
> There might be systems, where I/O is very slow and waiting for 100
> ENOSPC might take too long. So, I think it should be both enospc_cnt
> and total time as well. Whatever comes first, we exit. That should
> limit max test output to ~10kB.

Sure so what about exitting either at 100 ENOSPC or after 1s in a case
that we got at least one ENOSPC?

-- 
Cyril Hrubis
chrubis@suse.cz