Re: [PATCH] common/rc: add _filter_scratch in _test_inode_flag

[Xiaoli Feng <xifeng@redhat.com>]

Hi,

----- Original Message -----
> From: "Eryu Guan" <guan@eryu.me>
> To: "XiaoLi Feng" <xifeng@redhat.com>
> Cc: fstests@vger.kernel.org
> Sent: Sunday, November 29, 2020 4:12:34 PM
> Subject: Re: [PATCH] common/rc: add _filter_scratch in _test_inode_flag
> 
> On Mon, Nov 23, 2020 at 02:25:26PM +0800, Xiaoli Feng wrote:
> > From: Xiaoli Feng <xifeng@redhat.com>
> > 
> > Avoid the invalid failure when the path of file include test flag.
> > 
> > Signed-off-by: Xiaoli Feng <xifeng@redhat.com>
> 
> Would you please elaborate this issue in more details? It seems your
> SCRATCH_MNT contains a string that matches $flag so _test_inode_flag
> returns a false positive. But that only fixes SCRATCH_MNT, what if
> TEST_DIR contains the string as well?

When test generic/608 for dax on xfs, "_check_xflag $t_file 0" is always 
failed if the $f_file has dax string. Yes, here should also include filter
for TEST_DIR.

> 
> Thanks,
> Eryu
> 
> > ---
> >  common/rc | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/common/rc b/common/rc
> > index b5a504e0..04080331 100644
> > --- a/common/rc
> > +++ b/common/rc
> > @@ -3069,7 +3069,7 @@ _test_inode_flag()
> >  	local flag=$1
> >  	local file=$2
> >  
> > -	if $XFS_IO_PROG -r -c 'lsattr -v' "$file" | grep -q "$flag" ; then
> > +	if $XFS_IO_PROG -r -c 'lsattr -v' "$file" | _filter_scratch | grep -q
> > "$flag" ; then
> >  		return 0
> >  	fi
> >  	return 1
> > --
> > 2.18.1
> 
>