Re: [PATCH v5 06/10] xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl

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Hey Brian,

On Thu, Oct 18, 2012 at 08:16:57AM -0400, Brian Foster wrote:
> On 10/17/2012 06:40 PM, Ben Myers wrote:
> > On Tue, Oct 16, 2012 at 12:39:01PM +1100, Dave Chinner wrote:
> >> On Tue, Oct 16, 2012 at 10:49:02AM +1100, Dave Chinner wrote:
> >>> On Mon, Oct 15, 2012 at 05:46:26PM -0500, Ben Myers wrote:
> >>>> Hey Brian,
> >>>>
> ...
> >>>> I do think it is preferable to have a test case go in with the code where
> >>>> possible.  Since you don't mind waiting a bit, that seems to be the way to go.
> >>>> The other option could be to look for a volunteer to work on the test.  ;)
> >>>
> >>> FWIW, given the background cleanup code can be trivially verified to
> >>> work (open, apend, close, repeat, wait 5 minutes) and is the
> >>> functionality that is needed in mainline, having something to test
> >>> the ioctls should not stop the patchset from being merged.
> > 
> > Can we be assured that we'll get an xfstest for it eventually?
> > 
> 
> Absolutely. Getting a command into xfs_io to support such a test is now
> the top of my todo list with regard to XFS. :)

Excellent!

> > I think we can pull this in if Brian is willing post his test code.  Initially
> > it needn't be posted as an xfstest, that's fine.  As it stands today it appears
> > that Brian is the only one to ever use the ioctl and there is no way for anyone
> > else to test it.  Not an ideal situation.
> > 
> 
> The impetus for this work was some prototype quota work for the gluster
> distributed filesystem.

Now I'm curious where you're coming from.  Is gluster your primary project?

> Beyond testing via that, I just had a very
> simple/stupid program with the command and data structure bits
> copy/pasted in to open a file and invoke an xfsctl() with hardcoded
> parameters. I don't consider it post-worthy or very useful, but attached
> nonetheless since I have a couple things to deal with before I get a
> chance to play with xfs_io.

Thanks for posting it anyway.  That's enough for an interested party to do a
little fooling.  I believe Mark is finishing up a review of this series, so
we'll get it in soon.

Regards,
	Ben

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