From owner-freebsd-hackers@FreeBSD.ORG Tue Apr 5 14:31:50 2011 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7CE02106564A for ; Tue, 5 Apr 2011 14:31:50 +0000 (UTC) (envelope-from freebsd-hackers@m.gmane.org) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mx1.freebsd.org (Postfix) with ESMTP id 349E08FC1C for ; Tue, 5 Apr 2011 14:31:49 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Q77ID-0003oq-B7 for freebsd-hackers@freebsd.org; Tue, 05 Apr 2011 16:31:41 +0200 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 05 Apr 2011 16:31:41 +0200 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 05 Apr 2011 16:31:41 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-hackers@freebsd.org From: Ivan Voras Date: Tue, 05 Apr 2011 16:31:23 +0200 Lines: 20 Message-ID: References: <4D9B1DC2.1050205@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.12) Gecko/20101102 Thunderbird/3.1.6 In-Reply-To: <4D9B1DC2.1050205@gmail.com> X-Enigmail-Version: 1.1.2 Subject: Re: [gsoc] HTree Directory Index and Journal in ext2fs X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Apr 2011 14:31:50 -0000 On 05/04/2011 15:48, gnehzuil wrote: > Hello, > > I would like to apply a new project "HTree Directory Index and Journal > in ext2fs" in GSoC 2011. This project is not in ideas page. But this > project can improve ext2fs in FreeBSD. > > Last year, I have participated GSoC 2010 and have implemented a > preallocation algorithm in ext2fs and make it can read ext4 file system > in read-only mode. I have try to read htree dir index in ext4 read-only > mode. Yet I don't finish it. I am plan to implement a htree dir index in > ext2fs before midterm evaluation. > > Next I will try to implement journal in ext2fs. I think I can borrow > some ideas from WAPBL in NetBSD. When you say 'journal in ext2fs' do you mean ext3-compatible or something different entirely? I don't think that a journalling addition to our ext2fs which would not make it compatible with ext3 would be useful.