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Date:	Fri, 15 Jun 2007 16:30:02 +0530
From:	"Tejas Sumant" <>
To:	"Theodore Tso" <>
Subject: Re: Couple of queries related to htree directory

Hi Theodore,

My file system has dir_index feature.
When I created new directory larger than blocksize and run htree
command of debugfs on it, I received message that the directory is not
in htree format.

Any idea why this happened?


On 6/15/07, Theodore Tso <> wrote:
> On Thu, Jun 14, 2007 at 06:52:01PM +0530, Tejas Sumant wrote:
> >
> > Any idea, how to search a directory on given ext3 file system, which
> > is having htree structure?
> The same way you search any other Linux/Unix system.  I.e., using
> opendir()/readir() from a C program, or /bin/ls from a shell program,
> etc.  It's completely transparent.
> > Also is there any way to create a htree indexed directory explicitly?
> > using some command or tool?
> Once the dir_index feature is enabled, for all new directories and all
> directories which are only take one disk block grow to bigger than one
> disk block, they automatically get indexed.  (There's no point
> indexing a single directory block since that's equivalent to a single
> leaf block.)
> To convert existing directories, you need to unmount the filesystem
> and use the command:
>        e2fsck -fD /dev/hdXX
> This really should be added to an FAQ on
>                                         - Ted

Tejas Sumant
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