Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261701AbVCOS0B (ORCPT ); Tue, 15 Mar 2005 13:26:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261735AbVCOSYg (ORCPT ); Tue, 15 Mar 2005 13:24:36 -0500 Received: from [195.23.16.24] ([195.23.16.24]:31434 "EHLO bipbip.comserver-pie.com") by vger.kernel.org with ESMTP id S261701AbVCOSWS (ORCPT ); Tue, 15 Mar 2005 13:22:18 -0500 Message-ID: <423727BD.7080200@grupopie.com> Date: Tue, 15 Mar 2005 18:21:49 +0000 From: Paulo Marques Organization: Grupo PIE User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton Cc: Phillip Lougher , greg@kroah.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH][2/2] SquashFS References: <20050314170653.1ed105eb.akpm@osdl.org> <20050314190140.5496221b.akpm@osdl.org> In-Reply-To: <20050314190140.5496221b.akpm@osdl.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1653 Lines: 40 Andrew Morton wrote: > [...] > Also, this filesystem seems to do the same thing as cramfs. We'd need to > understand in some detail what advantages squashfs has over cramfs to > justify merging it. Again, that is something which is appropriate to the > changelog for patch 1/1. Well, probably Phillip can answer this better than me, but the main differences that affect end users (and that is why we are using SquashFS right now) are: CRAMFS SquashFS Max File Size 16Mb 4Gb Max Filesystem Size 256Mb 4Gb? UID/GID 8 bits 32 bits Block Size 4K default 64k Probably the block size is the most responsible for this, but the compression ratio achieved by SquashFS is much higher than that achieved with cramfs. I just wanted to say one thing on behalf of SquashFS. We've been using SquashFS in production on a POS system we sell, and we have currently more than 1200 of these in use. There was never a problem reported that involved SquashFS. Although the workload patterns of these systems are probably very similar (so the quantity doesn't really matter much), it is a real world test of the filesystem, nevertheless. -- Paulo Marques - www.grupopie.com All that is necessary for the triumph of evil is that good men do nothing. Edmund Burke (1729 - 1797) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/