Re: [PATCH 21/38] union-mount: Support for mounting union mount file systems

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On Wed, Aug 04, 2010 at 03:50:08PM -0400, Valerie Aurora wrote:
> On Wed, Aug 04, 2010 at 04:55:39PM +0200, Miklos Szeredi wrote:
> > On Tue, 15 Jun 2010, Valerie Aurora wrote:
> > > Create and tear down union mount structures on mount.  Check
> > > requirements for union mounts.  This version clones the read-only
> > > mounts and puts them in an array hanging off the superblock of the
> > > topmost layer.
> > 
> > If I do
> > 
> >   mount -r fs1 /mnt
> >   mount -r fs2 /mnt
> >   mount -ounion fs3 /mnt
> > 
> > then only fs2 and fs3 will be unioned.
> > 
> > Or how are multiple read-only layers supposed to work?
> 
> You have it right, this is a bug in lookup in the last version I sent
> out.  I had commented out the part of my test suite that actually
> tested three layer mounts so I didn't notice when I broke it. :/ I'll
> post a new version with the fix today.

Try branch "for_miklos" in:

git://git.kernel.org/pub/scm/linux/kernel/git/val/linux-2.6.git

It's against 2.6.34, I'm rebasing against 2.6.35 tomorrow.

-VAL
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