From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] qemu: use statically allocate 512 byte buffer in the stack for sector in bdrv_commit Date: Mon, 07 Jan 2008 20:29:21 +0200 Message-ID: <47826F81.8090906@qumranet.com> References: <20080104071138.GB9285@tapir> <4781F08E.8060407@qumranet.com> <1199701358.19008.1.camel@frecb07144> <4782034C.4000805@qumranet.com> <1199719004.23380.22.camel@frecb07144> <90eb1dc70801070734l2062cac6r7a7bed1d6d3d2c0c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Javier Guerra Return-path: In-Reply-To: <90eb1dc70801070734l2062cac6r7a7bed1d6d3d2c0c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Javier Guerra wrote: > On 1/7/08, Laurent Vivier wrote: > >> What I'm wondering now is: is it really useful to have "cache=off" and >> "snapshot=on" at the same time ? >> > > does "cache=off" means disk cache? if so, it might be useful to test > clustering filesystems. > > so far, the only way is to setup a network block device (iSCSI, AoE, > nbd). i'd like to simply specify the same backing file for two > instances' hdb parameter. > For that to work you need to use the raw format (and then, cache=off doesn't matter, as a clustering filesystem ought to have a coherent cache). -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace