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SubjectRe: [Nbd] [PATCH v2] nbd: nbd sysfs framework
On Fri, Aug 05, 2011 at 03:47:52AM +0200, Wouter Verhelst wrote:
> On Thu, Aug 04, 2011 at 06:11:27PM -0400, paul.clements@steeleye.com wrote:
> > diff --git a/Documentation/ABI/testing/sysfs-block-nbd b/Documentation/ABI/testing/sysfs-block-nbd
> > new file mode 100644
> > index 0000000..3728d9f
> > --- /dev/null
> > +++ b/Documentation/ABI/testing/sysfs-block-nbd
> > @@ -0,0 +1,8 @@
> > +What: /sys/block/nbd<id>/nbd/pid
> > +Date: August 2011
> > +Contact: Paul Clements <paul.clements@steeleye.com>
> > +Description:
> > + The pid file is read-only and specifies the pid of the
> > + caller of NBD_DO_IT ioctl (normally this is the nbd-client).
> > + The pid will be zero if the nbd connection is not
> > + currently established.
>
> That's different from current behaviour: in the current implementation,
> the absense of a connection is signalled by the absense of the PID file,
> rather than the contents being zero. Dunno whether that change is
> intentional, but I thought I'd check before changing nbd-client code...

The current behavior should not change, so that would be a bug and yet
another reason to reject this patch :)


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