From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1E26Lh-0005Jv-Cy for mharc-grub-devel@gnu.org; Mon, 08 Aug 2005 08:03:21 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1E26Le-0005J5-0T for grub-devel@gnu.org; Mon, 08 Aug 2005 08:03:18 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1E26Lb-0005Ic-L7 for grub-devel@gnu.org; Mon, 08 Aug 2005 08:03:17 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1E26KJ-0004bq-UL for grub-devel@gnu.org; Mon, 08 Aug 2005 08:01:56 -0400 Received: from [145.74.66.11] (helo=mail-cn.han.nl) by monty-python.gnu.org with esmtp (Exim 4.34) id 1E26JV-0007lF-76 for grub-devel@gnu.org; Mon, 08 Aug 2005 08:01:05 -0400 Received: from vscan-cn.han.nl (venus.han.nl [145.74.65.6]) by mail-cn.han.nl (Postfix) with ESMTP id 50E5982F6 for ; Mon, 8 Aug 2005 13:46:55 +0200 (CEST) Received: from mail-cn.han.nl ([145.74.66.11]) by vscan-cn.han.nl (venus.han.nl [145.74.65.6]) (amavisd-new, port 10024) with ESMTP id 31199-04 for ; Mon, 8 Aug 2005 12:57:00 +0200 (CEST) Received: from mail1.han.nl (mail1.han.nl [145.74.103.11]) by mail-cn.han.nl (Postfix) with ESMTP id 29FD08932 for ; Mon, 8 Aug 2005 13:46:53 +0200 (CEST) Received: from localhost.localdomain (mgerards.xs4all.nl [82.92.27.129]) by mail1.han.nl (Postfix) with ESMTP id EF80DC046 for ; Mon, 8 Aug 2005 13:46:52 +0200 (CEST) Mail-Copies-To: metgerards@student.han.nl To: The development of GRUB 2 References: <42F72A1A.3090605@gmail.com> From: Marco Gerards Date: Mon, 08 Aug 2005 13:46:58 +0200 In-Reply-To: <42F72A1A.3090605@gmail.com> (Vladimir Serbinenko's message of "Mon, 08 Aug 2005 11:47:06 +0200") Message-ID: <87fytkfy6l.fsf@student.han.nl> User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Virus-Scanned: by amavisd-new (2.2.0) at vscan-cn.han.nl Subject: Re: [DISCUSSION] Journal playback X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Aug 2005 12:03:18 -0000 Vladimir Serbinenko writes: > I've seen that journal playback is one of TODO items. I think it's bad > idea because: > > 1) It'll increase the size of FS modules. And fs modules are often embed > in core image. So their size is critical The size of a filesystem module is now about 4KB. We do not know yet how much the size will increase when journaling is possible. > 2) It'll decrease safety because now GRUB doesn't write to FS and then > it'll be so the GRUB's bugs could damage FS. > 3) It'll be impossible to use resume/resume2 because the fs environment > is not more the same as at the hibernation. The data should not be written to the filesystem. Instead the journal should be played back for the data that is read. I am not yet sure if it is possible, easy and fast enough. But I do think it is worthwhile to consider journaling support. -- Marco