Re: [PATCH] generic/258: check filesystem support for negative timestamps

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On Tue, Mar 31, 2020 at 10:14:35AM +0100, Luis Henriques wrote:
> On Wed, Mar 04, 2020 at 08:28:40PM +0200, Amir Goldstein wrote:
> > On Wed, Mar 4, 2020 at 6:11 PM Luis Henriques <lhenriques@xxxxxxxx> wrote:
> > >
> > > Some filesystems do not support negative c/m/atime timestamps.  And for
> > > these filesystems, generic/258 will fail.  Since there's currently no way
> > > to check sb->s_time_min from userspace, this patch adds a new common/rc
> > > function _require_negative_timestamps() that will _notrun depending on the
> > > $FSTYP variable.
> > >
> > > Signed-off-by: Luis Henriques <lhenriques@xxxxxxxx>
> > 
> > Looks fine,
> > 
> > Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx>
> 
> Hi Eryu,
> 
> I forgot Cc'ing you in the initial email.  Has this patch fell between the
> cracks, or is it not really acceptable?

I missed it totally.. Thanks for the heads up! I'll pick it up in this
week's update.

Thanks,
Eryu

> 
> Cheers,
> --
> Luis
> 
> > 
> > > ---
> > > Hi!
> > >
> > > I'm only adding 'ceph' to the _require_negative_timestamps() case because
> > > that was the only filesystem with s_time_min = 0 that I was able to test.
> > > However, a simple grep indicates there are a few other filesystems that
> > > would also be required there (e.g. nfs version < 4).
> > >
> > > Cheers,
> > > --
> > > Luis
> > >
> > >  common/rc         | 8 ++++++++
> > >  tests/generic/258 | 1 +
> > >  2 files changed, 9 insertions(+)
> > >
> > > diff --git a/common/rc b/common/rc
> > > index 0306e93cb1ca..067f30cecde7 100644
> > > --- a/common/rc
> > > +++ b/common/rc
> > > @@ -4157,6 +4157,14 @@ _check_xfs_scrub_does_unicode() {
> > >         return 0
> > >  }
> > >
> > > +_require_negative_timestamps() {
> > > +       case "$FSTYP" in
> > > +       ceph)
> > > +               _notrun "$FSTYP does not support negative timestamps"
> > > +               ;;
> > > +       esac
> > > +}
> > > +
> > >  init_rc
> > >
> > >  ################################################################################
> > > diff --git a/tests/generic/258 b/tests/generic/258
> > > index 68b8155d4a9f..dab1a476ed20 100755
> > > --- a/tests/generic/258
> > > +++ b/tests/generic/258
> > > @@ -30,6 +30,7 @@ trap "_cleanup ; exit \$status" 0 1 2 3 15
> > >  _supported_fs generic
> > >  _supported_os Linux
> > >  _require_test
> > > +_require_negative_timestamps
> > >
> > >  TESTFILE=$TEST_DIR/timestamp-test.txt
> > >



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