From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56242) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aT9AB-0005Pd-Nu for qemu-devel@nongnu.org; Tue, 09 Feb 2016 09:21:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aT9A7-00034u-Nn for qemu-devel@nongnu.org; Tue, 09 Feb 2016 09:21:07 -0500 Received: from mail-wm0-x230.google.com ([2a00:1450:400c:c09::230]:35531) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aT9A7-00034o-HS for qemu-devel@nongnu.org; Tue, 09 Feb 2016 09:21:03 -0500 Received: by mail-wm0-x230.google.com with SMTP id c200so62390599wme.0 for ; Tue, 09 Feb 2016 06:21:03 -0800 (PST) Date: Tue, 9 Feb 2016 14:21:00 +0000 From: Stefan Hajnoczi Message-ID: <20160209142100.GA19303@stefanha-x1.localdomain> References: <1454151394-52320-1-git-send-email-vsementsov@virtuozzo.com> <20160203081418.GC25746@ad.usersys.redhat.com> <56B45D3A.405@virtuozzo.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="tKW2IUtsqtDRztdT" Content-Disposition: inline In-Reply-To: <56B45D3A.405@virtuozzo.com> Subject: Re: [Qemu-devel] [PATCH v2 0/6] external backup api List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Denis V. Lunev" Cc: kwolf@redhat.com, Vladimir Sementsov-Ogievskiy , Fam Zheng , qemu-devel@nongnu.org, armbru@redhat.com, jsnow@redhat.com --tKW2IUtsqtDRztdT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Feb 05, 2016 at 11:28:42AM +0300, Denis V. Lunev wrote: > On 02/03/2016 11:14 AM, Fam Zheng wrote: > >On Sat, 01/30 13:56, Vladimir Sementsov-Ogievskiy wrote: > >>Hi all. > >> > >>These series which aims to add external backup api. This is needed to a= llow > >>backup software use our dirty bitmaps. > >> > >>Vmware and Parallels Cloud Server have this feature. > >What is the advantage of this appraoch over "drive-backup sync=3Dincreme= ntal > >..."? >=20 > This will allow third-party vendors to backup QEMU VMs into > their own formats or to the cloud etc. Backup software can implement NBD to receive the incremental blocks from QEMU. Use drive-backup sync=3Dincremental and the backup appliance as the NBD target. It's more complicated to add this QMP command flow to backup software than to implement NBD. Stefan --tKW2IUtsqtDRztdT Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJWufXMAAoJEJykq7OBq3PIxeYIAMH/uq7IWcuwnemC/D8uGFZ7 t6FDDRxbifDH3eA50Ghl/BeLBCkZrndh8BW+ifq3TG0m4FCZp4mrmeyNBGbYoAJK 7bQylKRbWPFs/MLyh9I7L7N0un0ZLOf9lyUncddcenG8eLWrsh04HZEIFHv6/Gew 8VCEs7uUbhB/oDQpRTWBstQVvz3sEWYJdJGoiZW5TpBS8VBzjBKHlfWJATmqGTUX ONCzShiBUUNRdnw3nPMBYXWc3h5CoQUjnuWRWtJ9ncEAw5BlqWxWwfaaFkeuLcMJ oyEk6FADMsv9uPBvFegaSu86ma7xx8aMOP/Mq+XOm0O0n4xlN6YmA0pIkzJKW38= =Zkli -----END PGP SIGNATURE----- --tKW2IUtsqtDRztdT--