From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758189AbYDMKAk (ORCPT ); Sun, 13 Apr 2008 06:00:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753664AbYDMKAa (ORCPT ); Sun, 13 Apr 2008 06:00:30 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:4912 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752478AbYDMKA3 (ORCPT ); Sun, 13 Apr 2008 06:00:29 -0400 Date: Sun, 13 Apr 2008 12:00:22 +0200 From: Pavel Machek To: Bob Copeland Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH 0/7] OMFS filesystem version 3 Message-ID: <20080413100022.GB4639@ucw.cz> References: <1208041121-26787-1-git-send-email-me@bobcopeland.com> <20080412170304.54f139e2.akpm@linux-foundation.org> <20080413033344.GA27494@hash.localnet> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080413033344.GA27494@hash.localnet> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > Uncached lookups in particular are very slow because directories are > essentially a huge hash table. You might have to seek through several > siblings in a bucket to get to the target file. > > They seem to have designed for online recovery with checksumming and > mirroring of every FS object. This module updates these, but it does > not do any online checking/repair. I have written an mkfs/fsck, though. This is actually quite interesting. Checksuming filesystem sounds pretty useful. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html