From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59336) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YJ6AE-0008HN-1k for qemu-devel@nongnu.org; Wed, 04 Feb 2015 15:03:06 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YJ6A9-00079b-4o for qemu-devel@nongnu.org; Wed, 04 Feb 2015 15:03:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:53567) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YJ6A8-00079N-T1 for qemu-devel@nongnu.org; Wed, 04 Feb 2015 15:03:01 -0500 Message-ID: <54D27AF1.8020302@redhat.com> Date: Wed, 04 Feb 2015 13:02:57 -0700 From: Eric Blake MIME-Version: 1.0 References: In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Ol6r176X4OwqQ24usJ3TmBagPxhBT6Xpo" Subject: Re: [Qemu-devel] Network Migration in QEMU during Live Migration List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Azizul Hakim , qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ol6r176X4OwqQ24usJ3TmBagPxhBT6Xpo Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 02/04/2015 12:01 PM, Azizul Hakim wrote: > Hi all, >=20 > Does QEMU support network migration so that the migration process is > transparent to users? For example if my VM has a web server, I would li= ke > my user still be able to send request to the server after the migration= > process is completed. But since migration causes a change of the physic= al > machine, the IP address is different. So how do I achieve this? I > understand that I've to create bridge network. What other things do I'v= e to > take care off? Is it possible at all? The IP address of the host is different, but the IP address seen by the guest is the same. Live migration has been possible for several years with qemu, and people do it all the time. The guest sees very minimal downtime (a few milliseconds). If you use a higher-layer software, like libvirt, then triggering a live migration of a guest is quite easy. --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --Ol6r176X4OwqQ24usJ3TmBagPxhBT6Xpo Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJU0nrxAAoJEKeha0olJ0NqFoAIAJuAnl/rvL6dRry9xc9tmIF6 ATSGrD4Zm494WuIvXNn3OIOuSDiyff3JcTh4EZnXJVynHKgnDqru619vvB9WXBS0 UctvhVpBLzC/TPAwRDMmxsYooppHrsIBmnsQmYxgiS90zix20SPfLle6rxXFD9Di zRF+9Rw/bgthCB1NDCT/tO8yijGC1G44PxwbmtjDfbIP63exubsJMWAh3eC/2GBw dN5tNLoAYEbJ/2lD7HAV5XPhlq0kwjng/FtN8xoHFtyYivZoUu0KRRfj+BQs1oy1 JlESF45r78Gg0p3w4aBPvSVUB51RN0X0PcvBvNRQ7hSFYFxr8e1Sy2odx/BQNLE= =rlcy -----END PGP SIGNATURE----- --Ol6r176X4OwqQ24usJ3TmBagPxhBT6Xpo--