From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35885) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fOmj4-0004AO-Cb for qemu-devel@nongnu.org; Fri, 01 Jun 2018 12:16:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fOmj3-0001Uo-J0 for qemu-devel@nongnu.org; Fri, 01 Jun 2018 12:16:26 -0400 References: <1487347224-8667-1-git-send-email-pl@kamp.de> <20170220145011.GJ21255@stefanha-x1.localdomain> <73412b92-353d-7109-cfbe-9c61bf91e7eb@kamp.de> From: Vladimir Sementsov-Ogievskiy Message-ID: Date: Fri, 1 Jun 2018 19:16:14 +0300 MIME-Version: 1.0 In-Reply-To: <73412b92-353d-7109-cfbe-9c61bf91e7eb@kamp.de> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-US Subject: Re: [Qemu-devel] [Qemu-block] [RFC PATCH V4] qemu-img: make convert async List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Lieven , Stefan Hajnoczi Cc: kwolf@redhat.com, famz@redhat.com, qemu-devel@nongnu.org, qemu-block@nongnu.org, mreitz@redhat.com Hi! 20.02.2017 17:59, Peter Lieven wrote: > Am 20.02.2017 um 15:50 schrieb Stefan Hajnoczi: >> On Fri, Feb 17, 2017 at 05:00:24PM +0100, Peter Lieven wrote: >>> this is something I have been thinking about for almost 2 years now. >>> we heavily have the following two use cases when using qemu-img=20 >>> convert. >>> >>> [...] >> Does this patch work with compressed images?=A0 Especially the >> out-of-order write mode may be problematic with a compressed qcow2=20 >> image. > > It does, but you are right, out-of-order writes and compression should > be mutually exclusive. Sorry for being late, but can you please explain to me, why? --=20 Best regards, Vladimir