From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Gh5Hl-00073f-6O for qemu-devel@nongnu.org; Mon, 06 Nov 2006 09:17:13 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Gh5Hd-00072P-2m for qemu-devel@nongnu.org; Mon, 06 Nov 2006 09:17:12 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Gh5Hc-00072M-Un for qemu-devel@nongnu.org; Mon, 06 Nov 2006 09:17:04 -0500 Received: from [206.190.48.218] (helo=web52615.mail.yahoo.com) by monty-python.gnu.org with smtp (Exim 4.52) id 1Gh5Hc-0001Tr-RJ for qemu-devel@nongnu.org; Mon, 06 Nov 2006 09:17:05 -0500 Message-ID: <20061106141704.72500.qmail@web52615.mail.yahoo.com> Date: Mon, 6 Nov 2006 06:17:04 -0800 (PST) From: Ottavio Caruso MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] -snapshot otion and writes to (flash) disk Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Hello qemu-devel, I'm trying to determine whether the -snapshot option is a valid one to minimize writes to disk (in my case a flash drive). In particular I wonder if the final write, that is the one you do with the 'commit hda' in the qemu monitor, is the exact sum of all the individual writes or smaller. As an empiric test, I have loaded a Debian image, installed a program (5 Mb, according to apt-get), removed the program, committed the snapshot, halted the system: the original qcow image has grown of about 18 MB. What do you think? Ottavio ____________________________________________________________________________________ Sponsored Link Try Netflix today! With plans starting at only $5.99 a month what are you waiting for? http://www.netflix.com/Signup?mqso=80010030