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Message-ID: <1a2ad4e0142c6a80a0930c9d4841facb75a8f93b.camel@kernel.org>
Subject: Re: [PATCH fstests 2/2] generic/732: don't run it on NFS
From: Jeff Layton <jlayton@kernel.org>
To: Zorro Lang <zlang@redhat.com>
Cc: Anna Schumaker <anna@kernel.org>, Trond Myklebust
 <trondmy@hammerspace.com>,  Chuck Lever <chuck.lever@oracle.com>, Yongcheng
 Yang <yoyang@redhat.com>, linux-nfs@vger.kernel.org, 
 fstests@vger.kernel.org
Date: Thu, 11 Jan 2024 16:13:11 -0500
In-Reply-To: <20240111204931.oqbub6crymt2misb@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com>
References: <20240110-fixes-v1-0-69f5ddd95656@kernel.org>
	 <20240110-fixes-v1-2-69f5ddd95656@kernel.org>
	 <20240111204931.oqbub6crymt2misb@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com>
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On Fri, 2024-01-12 at 04:49 +0800, Zorro Lang wrote:
> On Wed, Jan 10, 2024 at 01:27:28PM -0500, Jeff Layton wrote:
> > This test sets up two independent superblocks with the same backend
> > server, and then does RENAMES of the same files in the two servers. Thi=
s
> > is basically trying to simulate the case where two clients are competin=
g
> > to rename files in the same directory on the same server.
> >=20
> > This test would usually pass vs. an NFSv4 server that doesn't have
> > dfdd2630a7398 ("nfsd: fix change_info in NFSv4 RENAME replies"), becaus=
e
> > the client would end up improperly invalidating the dcache for the whol=
e
> > dir after most RENAMEs.
> >=20
> > However, this test doesn't (and shouldn't) pass on NFS, because the
> > client has no idea that a rename has happened on the second mount. The
> > expected behavior for the NFS client is for it to use the cache timeout=
s
> > in this case, which is what it now does with the above server bug fixed=
.
> >=20
> > Exempt NFS from running this test, since we don't expect it to pass.
> >=20
> > Cc: Yongcheng Yang <yoyang@redhat.com>
> > Signed-off-by: Jeff Layton <jlayton@kernel.org>
> > ---
>=20
> This case is written for a nfs fix at first. If nfs would like to skip th=
is
> test, I don't know if it makes sense to keep it in fstests?
>=20
>=20

It might make sense to keep this test in place for stuff like cephfs,
but if dropping it altogether is best, then that's fine with me.

>=20
> >  tests/generic/732 | 4 +---
> >  1 file changed, 1 insertion(+), 3 deletions(-)
> >=20
> > diff --git a/tests/generic/732 b/tests/generic/732
> > index 785aac58f361..5b5087d5accd 100755
> > --- a/tests/generic/732
> > +++ b/tests/generic/732
> > @@ -22,9 +22,7 @@ _cleanup()
> >  }
> > =20
> >  # real QA test starts here
> > -_supported_fs generic
> > -[ "$FSTYP" =3D "nfs" ] && _fixed_by_kernel_commit fdd2630a739819 \
> > -	"nfsd: fix change_info in NFSv4 RENAME replies"
> > +_supported_fs ^nfs
> > =20
> >  _require_test
> >  _require_scratch
> >=20
> > --=20
> > 2.43.0
> >=20
> >=20
>=20

--=20
Jeff Layton <jlayton@kernel.org>