From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43377) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e7cf4-0001m8-50 for qemu-devel@nongnu.org; Thu, 26 Oct 2017 03:33:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e7cf3-0003P4-3c for qemu-devel@nongnu.org; Thu, 26 Oct 2017 03:33:05 -0400 References: <20171025133115.GA23458@lemon> From: Max Reitz Message-ID: Date: Thu, 26 Oct 2017 09:32:50 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="1SUvOoKcF8eGp0KF64BfUcl40tG9SGUGo" 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" , Qemu-block This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --1SUvOoKcF8eGp0KF64BfUcl40tG9SGUGo From: Max Reitz To: Changlimin , Fam Zheng Cc: "qemu-devel@nongnu.org" , Qemu-block 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 09:18, Changlimin wrote: > If the qcow2 file is created with preallocation=3Dfull, I think metadat= a will not corrupt when it is shared between two vms? Snapshot is not req= uired.=20 >=20 > Is this right? I wouldn't count on it. If you really want to take the risk, you can probably use the file.locking=3Doff option again. Max --1SUvOoKcF8eGp0KF64BfUcl40tG9SGUGo Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQFGBAEBCAAwFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAlnxj6MSHG1yZWl0ekBy ZWRoYXQuY29tAAoJEPQH2wBh1c9AQ8wIAL9es6xNwIpVoXhF/A/oOMTUvkI3eSTq fzsa/jIPhyJ/8ShAWERr1kovkxVwx5R2/sn3DFfKsAhDExXcA1WhxxvrFUA/lv0R AIKA9LBzBS9S2AFgmkdbQvsvjTs/Z1PqlQImWvMQpTg61ojkQff20WK5LBJFEBQs E4TpNpAl6dgufZZt2/q89wRgCZ4iBWd/7LGLTh8dOFl0xPOagdIKOZlEWafmaX7n cuaEqI8P6bXuW1dvy4iPbK0Oc2a2kWNx0EKMaTyBxzB+Ux5E+qjby6tBFJ9abv/7 AEmixmEpJf/q0+oD/XE1sTjXHKylOUlwqYtcCkOOP4l29hbtcc6GQ9k= =gUCw -----END PGP SIGNATURE----- --1SUvOoKcF8eGp0KF64BfUcl40tG9SGUGo--