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Re: A success story with apt and rsync



On Sun, Jul 06, 2003 at 07:28:09PM -0400, Matt Zimmerman wrote:
> On Sun, Jul 06, 2003 at 11:36:34PM +0100, Andrew Suffield wrote:
> 
> > On Sun, Jul 06, 2003 at 05:48:24PM -0400, Theodore Ts'o wrote:
> > > Err, no.  If the htree (hash tree) indexing feature is turned on for
> > > ext2 or ext3 filesystems, they will returned sorted by the hash of the
> > > filename --- effectively a random order.  (Since the hash also
> > > includes a secret, random, per-filesystem secret in order to avoid
> > > denial of service attacks by malicious users who might otherwise try
> > > to create huge numbers of files containing hash collisions.)
> > 
> > I can only presume this is new or obscure, since everything I tried
> > had the traditional behaviour. Can't see how to turn it on, either.
> 
> I believe htree == dir_index, so tune2fs(8) and mke2fs(8) have the answer.

My /home has that enabled and readdir() returns files in creation order.

-- 
  .''`.  ** Debian GNU/Linux ** | Andrew Suffield
 : :' :  http://www.debian.org/ | Dept. of Computing,
 `. `'                          | Imperial College,
   `-             -><-          | London, UK

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