From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39134) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7cKZ-00059p-U0 for qemu-devel@nongnu.org; Thu, 26 Oct 2017 03:11:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e7cKW-0005S2-OQ for qemu-devel@nongnu.org; Thu, 26 Oct 2017 03:11:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51676) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e7cKW-0005RE-FM for qemu-devel@nongnu.org; Thu, 26 Oct 2017 03:11:52 -0400 References: <20171025133115.GA23458@lemon> From: Max Reitz Message-ID: Date: Thu, 26 Oct 2017 09:11:46 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="xcxxtJarGcoTRq9EuvUmoVOa5BvDeiAPq" Subject: Re: [Qemu-devel] Block format 'raw' does not support the option 'locking' when disable image locking with option locking=off List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Changlimin , Fam Zheng Cc: "qemu-devel@nongnu.org" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --xcxxtJarGcoTRq9EuvUmoVOa5BvDeiAPq From: Max Reitz To: Changlimin , Fam Zheng Cc: "qemu-devel@nongnu.org" Message-ID: Subject: Re: [Qemu-devel] Block format 'raw' does not support the option 'locking' when disable image locking with option locking=off References: <20171025133115.GA23458@lemon> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2017-10-26 03:06, Changlimin wrote: > share-rw=3Don is good for raw format file, but bad for qcow2 format fil= e: >=20 > Failed to get "write" lock > Is another process using the image? >=20 > Is this intented? Yes, because you can never share qcow2 image files between VMs. The qcow2 format itself does not support this, as it may lead to metadata corruption. Max --xcxxtJarGcoTRq9EuvUmoVOa5BvDeiAPq Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQFGBAEBCAAwFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAlnxirISHG1yZWl0ekBy ZWRoYXQuY29tAAoJEPQH2wBh1c9ABA0H/07M1/RRe4us+Y1tKI3KiIYBuejK/kVf xm5vWNT5oO/a74mN03Svop++9TDAGk+R3ZXO6n6+Hfy6CFewc2a5kX3BzCsDr+8U Xe9F0ROK6d8iY/ZTxQEifSO0WI7fOZB5lCgAxUMbIJGrp6BbGs01dLXxFIhWsB4s Ydv6Ec0diC+7ebK5A4AoBZryz2ZLrHSKFWlFX93yd2ulWv1Tkurvn/msqKFmKTFZ FGqsglzOqa7VkQmDIDjWCvNR/lAJwnSl79cKyz7ao6TLoY830cx3pHjqQ2Wpb0xg U6jwymDsAAP+5q+iNH4CaCfu0NhSIy3/cSGMjl4PYalzLcrfjGrt+fA= =HScl -----END PGP SIGNATURE----- --xcxxtJarGcoTRq9EuvUmoVOa5BvDeiAPq--