Access counts.

[Pawel Jakub Dawidek]

On Fri, Sep 17, 2004 at 11:01:49AM +0200, Poul-Henning Kamp wrote:
+> >Now, let's go back to George's problem. Gmirror detects da0s1 as a part
+> >of the mirror, it creates consumer, etc. Geom gives da0s1a for tasting.
+> >Gmirror opens it for reading, but da0s1 is opened r1w0e1.
+> >In the same time, gmirror's working thread wants to update metadata,
+> >but it cannot do this, because it cannot open da0s1 for writing,
+> >because it has exclusive bit already. In such situation gmirror
+> >disconnects this component.
+> 
+> Gmirror does something wrong.
+> 
+> You can upgrade your open from r1w0e1 to r1w1e1 if you want to.

You misunderstud me. We have something like this here:

	taste thread			gmirror thread
	------------			--------------
	g_access(da0s1a, 1, 0, 0)
	GEOM:g_access(da0s1, 1, 0, 1)
					g_access(da0s1, 0, 1, 1) -> EPERM

This is not the same consumer in taste thread and gmirror thread.

-- 
Pawel Jakub Dawidek                       http://www.FreeBSD.org
pjd at FreeBSD.org                           http://garage.freebsd.pl
FreeBSD committer                         Am I Evil? Yes, I Am!
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