To: Kay Sievers <kay.sievers@vrfy.org>
Cc: device-mapper development <dm-devel@redhat.com>,
       Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org
Subject: Re: [dm-devel] Re: 2.6.24-rc4-mm1
In-Reply-To: Your message of "Fri, 07 Dec 2007 00:24:04 +0100."
             <1196983444.2829.38.camel@lov.site>
From: Valdis.Kletnieks@vt.edu
References: <20071204211701.994dfce6.akpm@linux-foundation.org> <3941.1196941764@turing-police.cc.vt.edu> <20071206040420.6c89c675.akpm@linux-foundation.org> <4374.1196968688@turing-police.cc.vt.edu> <20071206193843.GA25125@kroah.com> <3ae72650712061404w170fc434nb1172e048216e139@mail.gmail.com> <2955.1196982750@turing-police.cc.vt.edu>
            <1196983444.2829.38.camel@lov.site>
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Date: Fri, 07 Dec 2007 13:20:30 -0500
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On Fri, 07 Dec 2007 00:24:04 +0100, Kay Sievers said:
> On Thu, 2007-12-06 at 18:12 -0500, Valdis.Kletnieks@vt.edu wrote:
> > On Thu, 06 Dec 2007 23:04:12 +0100, Kay Sievers said:
> > 
> > > What's the value of SYSFS_DEPRECATED? Care to set it to yes, if it isn't,
> > > and try again?
> > 
> > I *knew* there was a D'Oh! error in here. ;)
> > 
> > Bisection is fast closing in on gregkh-driver-block-device.patch, which broke
> > my LVM almost the exact same way the *last* time it showed up in -mm ;)
> 
> Oh, it must not, if SYSFS_DEPRECATED=y is set. I hope we fixed all
> issues. Please let us know if it does not work, then we will need to
> look into it.

I changed SYSFS_DEPRECATED to y, and it was able to boot with the same old
initrd I've been using for a while.

Note that I had it set to 'n' for at least the last 4-5 -mm kernels, so it
*was* working fine without it..

> > > A fix for LVM to handle symlinks instead of directories is in the LVM
> > > CVS tree, but there wasn't a release since August.
> > 
> > I seem to recall it was 'nash' rather than LVM that had the indigestion the
> > last time around.
> 
> I think that a recent nash should work, even with SYSFS_DEPRECATED=n.
> Anyway, nothing should change when SYSFS_DEPRECATED set, nash works fine
> here, with that.

It was working fine with =n here until -rc4-mm1 as well, that's why it's a bit
of a surprise.  What got added to the 'deprecated' list in this iteration?

Now for the truly odd part - I just tried with a rebuilt initrd that included
the lvm.static from last night's Rawhide (lvm2-2.02.29-1.fc9).  And that didn't
work any better.

So to summarize: (old lvm == 2.02.24)

release	SYSFS_DEPRECATED	lvm2		works
-rc3-mm2		N	old	yes
-rc4-mm1		N	old	no
-rc4-mm1		Y	old	yes
-rc4-mm1		N	new	no

(I'm sure looking at that, everybody is now going 'WTF??!?' ;)

gregkh-driver-driver-core-fix-class-glue-dir-cleanup-logic.patch and
gregkh-driver-block-device.patch are the only patches left in the (very small)
bisect window that reference SYSFS_DEPRECATED at all (according to grep)

Anybody got any brilliant ideas? :)


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