[Ocfs2-devel] [RFC] to make files of ocfs2 under sysfs canonical

[Joel Becker]

On Fri, Dec 07, 2007 at 03:21:20PM +0800, rae l wrote:
> On Dec 7, 2007 1:12 PM, Joel Becker <Joel.Becker at oracle.com> wrote:
> > o2cb is, in theory, independent of the filesystem.  Thus, it doesn't
> > necessarily belong under /sys/fs.
> I agree it's independent, but /sys/oc2b just don't conform the uniform
> of the linux kernel sysfs usage.

	By your measure.  By others, it does.  In fact, we asked around
before we put it there.

> > The bigger problem is that there are tools expecting /sys/o2cb to be
> > there.  We can't just drop it.
> Do you mean the ocfs2-tools? We could also change it. Or any other tools?

	I mean ocfs2-tools.  We have to deal with existing
installations, not just new tools.

> The kernel community doesn't promise a stable kernel API, so does the sysfs,
> Except If it would break many userspace tools, we should consider with
> caution or keep the binary compatibility,

	sysfs is a userspace ABI.  The kernel *does* try to keep
userspace ABI stable or backwards compatible.

Joel

-- 

"What do you take me for, an idiot?"  
        - General Charles de Gaulle, when a journalist asked him
          if he was happy.

Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127