From: Theodore Tso Subject: Re: ask for help; hash-directory machanism of ext3 cannot work well Date: Thu, 21 Jun 2007 12:57:49 -0400 Message-ID: <20070621165749.GA5664@thunk.org> References: <467a39a0.1997600a.2ec2.ffffd4d1@mx.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: LIOU Payphone Return-path: Received: from THUNK.ORG ([69.25.196.29]:48849 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752763AbXFUQ6A (ORCPT ); Thu, 21 Jun 2007 12:58:00 -0400 Content-Disposition: inline In-Reply-To: <467a39a0.1997600a.2ec2.ffffd4d1@mx.google.com> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On Thu, Jun 21, 2007 at 04:40:55PM +0800, LIOU Payphone wrote: > > my problem : First of all, what version of e2fsprogs and kernel are you using?n > (1) when i want to format /dev/sda1 to be ext3-filesystem, i set > "s_def_hash_version" of "struct ext3_super_block" to be "DX_HASH_LEGACY". > when the filesystem was formatted successfully, i mounted it under a > directory named "/mnt". How did you set the s_def_hash_version? Were you using debugfs? And did you turn on the dir_index feature? With recent versions of e2fsprogs the dir_index feature is enabled default, with DX_HASH_TEA as the default. > (2) subsequently, i created 40000 empty regular-files under "/mnt" named > from "0" to "39999". > (3) then , "ls -li /mnt" was executed; i saw a puzzling thing : there are > two indentical entries of the directory named "mnt"! both inode->i_ino and > filename are in the same. Huh? What do you mean by that? Are you seeing two entries named "mnt" in the /mnt directory? I wasn't able to reproduce this. > 32203 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24010 > 32204 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24011 > 32205 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24012 > 32206 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24013 > 32207 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24014 > 32208 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24015 > 32209 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 24016 > 33220 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:37 25027 > 3220 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:31 3090 > 3350 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:31 3220 > 3350 -rwxrwxrwx 1 liupf liupf 0 Jun 14 11:31 3220 You didn't list any "mnt" entries above. So I don't know what you saw. - Ted