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Re: duplicate entries on ext3 when using readdir/readdir64



On Wed, 2008-08-06 at 10:07 -0400, Theodore Tso wrote:
> On Tue, Aug 05, 2008 at 12:53:51PM +0200, Thomas Trauner wrote:
> > On Fri, 2008-08-01 at 08:16 -0400, Theodore Tso wrote:
> > > On Fri, Aug 01, 2008 at 11:43:40AM +0200, Thomas Trauner wrote:
> > > > 
> > > > I have a problem with directories that contain more than 10000 entries
> > > > (Ubuntu 8.04.1) or with more than 70000 entries (RHEL 5.2). If you use
> > > > readdir(3) or readdir64(3) you get one entry twice, with same name and
> > > > inode.
> > > > 
> > I made new tests with the code under
> > <http://www.unet.univie.ac.at/~a9100884/readdir.c> on a bunch of freshly
> > generated and empty filesystems, every about 38GB large, of type fat
> > (aborted after about 22000 entries because it took to long), ext2, xfs,
> > jfs and again ext3....
> 
> OK, I have a workaroud for you.  It appears there's a kernel bug
> hiding here, since there shouldn't be duplicates returned by readdir()
> even if we have hash collisions.  

Thank you for your fast help and detailed explanation! Now I've
something to read at home ;)

Thanks!
Tom


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