From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:50167) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QM4Kb-0005DB-MD for qemu-devel@nongnu.org; Mon, 16 May 2011 16:23:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QM4Ka-0008W6-PO for qemu-devel@nongnu.org; Mon, 16 May 2011 16:23:57 -0400 Received: from verein.lst.de ([213.95.11.211]:35671 helo=newverein.lst.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QM4Ka-0008Vx-I3 for qemu-devel@nongnu.org; Mon, 16 May 2011 16:23:56 -0400 Date: Mon, 16 May 2011 22:23:54 +0200 From: Christoph Hellwig Message-ID: <20110516202354.GA8955@lst.de> References: <20110516181023.7142.33402.sendpatchset@skannery> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20110516181023.7142.33402.sendpatchset@skannery> Subject: Re: [Qemu-devel] [RFC Patch 0/3]Qemu: Enable dynamic cache change through qemu monitor List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Supriya Kannery Cc: Kevin Wolf , Christoph Hellwig , qemu-devel@nongnu.org, Prerna Saxena Why are you even trying this again? As explained very clearly last time you can't change from a writeback-style to a write-through style I/O from the monitor without creating massive data integrity problems. See my patchset that allows changing this from the guest for how it should be done - I just need to get back and revisit the virtio protocol support for it.