From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42447) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xvp6W-0004FJ-Iu for qemu-devel@nongnu.org; Tue, 02 Dec 2014 10:11:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xvp6S-0004mn-1o for qemu-devel@nongnu.org; Tue, 02 Dec 2014 10:11:04 -0500 Received: from mx1.redhat.com ([209.132.183.28]:43663) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xvp6R-0004mg-NX for qemu-devel@nongnu.org; Tue, 02 Dec 2014 10:10:59 -0500 Date: Tue, 2 Dec 2014 15:10:54 +0000 From: Stefan Hajnoczi Message-ID: <20141202151054.GC12390@stefanha-thinkpad.redhat.com> References: <20141125093258.29019.8645.malonedeb@wampee.canonical.com> <20141125093258.29019.8645.malonedeb@wampee.canonical.com> <20141127092059.GB3899@grmbl.mre> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="KN5l+BnMqAQyZLvT" Content-Disposition: inline In-Reply-To: <20141127092059.GB3899@grmbl.mre> Subject: Re: [Qemu-devel] [Bug 1396052] [NEW] migration failed when running BurnInTest in guest List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Amit Shah Cc: Kevin Wolf , Juan Quintela , Bug 1396052 <1396052@bugs.launchpad.net>, qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , aik@ozlabs.ru --KN5l+BnMqAQyZLvT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 27, 2014 at 02:50:59PM +0530, Amit Shah wrote: > On (Tue) 25 Nov 2014 [09:32:58], z08687 wrote: > > Public bug reported: > >=20 > > Hi, =20 > > I found a live migration problem and have found out the reason, but I c= an't fix it up myself. I really need help. > > When live migration vm and it's block device in save time, it will occu= r probabilistic . > >=20 > > Step: > > 1. start a windows vm,and run burnInTest(it will write dirty data to b= lock device in migration) > > 2. migrate vm with it's block device. > > 3. a few minutes later, dest vm was killed and migration will be fail= ed (probabilistic ) >=20 > That's a nice test case, as well as good analysis. This is a known issue: https://lists.gnu.org/archive/html/qemu-devel/2014-09/msg02959.html Please try this patch: commit 7ea2d269cb84ca7a2f4b7c3735634176f7c1dc35 Author: Alexey Kardashevskiy Date: Thu Oct 9 13:50:46 2014 +1100 block/migration: Disable cache invalidate for incoming migration Stefan --KN5l+BnMqAQyZLvT Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUfdZ+AAoJEJykq7OBq3PICuEH/0K0orFi4oz3YdLero8Kt6hl PDYbWaM5T8pvVfzRcrRAtnOBljNUwhP4adbLoS7j1iE6mdQPnrYVCDqpt80JGQBm da+LugrqB50fMPqE4OuLXDo6bnvOrKcFVI5Vw0yoPP2K16V0PBlVOxfyXTqNlOqp xPDsjvh1tmGbiTA9UHYNOMKlV1ktenWfgwxnDdLOmCPCM/kuWFUB9jv1PmGZekJV iKU1ZA4zfP2jMQFXRS7mqoR69B+MTjXV5ga1EYbRNneE8K5hNiFGW8jxhHUyN9Gz Ew4qfsFUOpFlyyo6958VHwESbEFOmR2XFrKd6/ocjx1E1iuadv9+ZBv3Pk23emg= =gz92 -----END PGP SIGNATURE----- --KN5l+BnMqAQyZLvT--