Re: ext4 quota tests fail with CONFIG_QFMT_V2=n

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On Thu, Jan 18, 2018 at 01:21:25PM +0100, Jan Kara wrote:
> On Wed 17-01-18 20:28:31, Theodore Ts'o wrote:
> > On Wed, Jan 17, 2018 at 05:09:36PM -0800, Omar Sandoval wrote:
> > > Hello,
> > > 
> > > If I run xfstests on ext4 with a kernel with CONFIG_QFMT_V2=n, the following
> > > tests fail:
> > > 
> > > generic/082
> > > generic/219
> > > generic/230
> > > generic/231
> > > generic/232
> > > generic/233
> > > generic/234
> > > generic/235
> > > generic/244
> > > generic/270
> > > generic/382
> > > 
> > > Would it be possible to handle this case and skip the test instead?
> > 
> > I'd like to ask a different question, which is there a reason to
> > support CONFIG_QFMT_V1 && !CONFIG_QFMT_V2?  Maybe we should just
> > always enable CONFIG_QFMT_V2, and simplify the test matrix?
> 
> Well, with ancient setups you could be using V1 quota format and then you
> don't need CONFIG_QFMT_V2. So I don't see a great reason to force enabling
> of CONFIG_QFMT_V2...
> 
> Omar's problem is actually that he had no quota format enabled so tools
> failed miserably to enable quotas although xfstests thought quota should be
> available. That could be viewed as a bug in _require_quota() macro in xfstests
> but OTOH userspace has no way of knowing which quota formats are available
> - it can only try to enable quota on a particular fs and that either fails
> or not. So implementing proper _require_quota() macro would mean you have
> to do full quota setup for some filesystem, try to enable quotas, and see if
> that fails. Doable but frankly I'm not hugely interested in that for such a
> cornercase...

Yeah, I'll just disable these tests. Thanks, Jan and Ted.
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