Re: [RFC PATCH 1/1] Remove nfsv4

[Petr Vorel <pvorel@suse.cz>]

Hi Bruce, Trond,

> > On Mon, Jul 20, 2020 at 01:32:09PM +0000, Trond Myklebust wrote:
> > > On Mon, 2020-07-20 at 11:14 +0200, Petr Vorel wrote:
> > > > Reasons to drop:
> > > > * outdated tests (from 2005)
> > > > * not used (NFS kernel maintainers use pynfs [1])
> > > > * written in Python (we support C and shell, see [2])

> > > > [1] http://git.linux-nfs.org/?p=bfields/pynfs.git;a=summary
> > > > [2] https://github.com/linux-test-project/ltp/issues/547


> > > Unlike pynfs, these tests run on a real NFS client, and were designed
> > > to test client implementations, as well as the servers.

> > > So if they get dropped from ltp, then we will have to figure out some
> > > other way of continuing to maintain them.

> > Just for fun, I grepped through old mail to see if I could find any
> > cases of these tests being used.  I found one, in which Chuck reports an
> > nfslock01 failure.  Looks like it did find a real bug, which we fixed:

> > 	https://lore.kernel.org/r/8DF85CB6-5FEB-4A25-9715-C9808F37A4B1@oracle.com
> > 	https://lore.kernel.org/r/20160807185024.11705.10864.stgit@klimt.1015granger.net

> Thanks for your explanation, this obviously justify these tests in LTP, unless
> you want to move it to git.linux-nfs.org and maintain on your own.
Actually, that fix 42691398be08 ("nfsd: Fix race between FREE_STATEID and LOCK")
from v4.8-rc2 reported by Alexey Kodanev (LTP network maintainer) was found by
nfslock01 test [1], which is integrated into other LTP NFS tests [2]. I'd
definitely keep these in LTP.

nfsv4 I proposed to remove as outdated and not being used are testing ACL [3]
and fcntl locking [4]. ACL tests use rsh and aren't integrated into LTP
framework (use their custom [5] runtest file thus I doubt anyone is using it).
fcntl locktests are at least integrated into LTP (use fcntl-locktests runtest
file[6], I forget to remove it in this patch).
Both tests are written in 2005. I don't want to push for removal, if you see any
use in it.

Kind regards,
Petr

[1] https://github.com/linux-test-project/ltp/tree/master/testcases/network/nfs/nfslock01/
[2] https://github.com/linux-test-project/ltp/blob/master/runtest/net.nfs
[3] https://github.com/linux-test-project/ltp/tree/master/testcases/network/nfsv4/acl
[4] https://github.com/linux-test-project/ltp/tree/master/testcases/network/nfsv4/locks
[5] https://github.com/linux-test-project/ltp/blob/master/testcases/network/nfsv4/acl/runtest
[6] https://github.com/linux-test-project/ltp/blob/master/runtest/fcntl-locktests