From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44488) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WjsYG-0007bX-6S for qemu-devel@nongnu.org; Mon, 12 May 2014 11:54:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WjsYA-00073c-JO for qemu-devel@nongnu.org; Mon, 12 May 2014 11:54:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47411) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WjsYA-00072s-B6 for qemu-devel@nongnu.org; Mon, 12 May 2014 11:53:58 -0400 Message-ID: <5370EE94.8090703@redhat.com> Date: Mon, 12 May 2014 09:53:56 -0600 From: Eric Blake MIME-Version: 1.0 References: <1399898143-28288-1-git-send-email-ncmike@ncultra.org> <5370E340.5090401@redhat.com> <20140512151356.GC4371@noname.redhat.com> <5370E6A0.3030406@redhat.com> In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="MRBiHGkxlqqDbgLNDFDCn80KciD2aunck" Subject: Re: [Qemu-devel] [PATCH] Add backing file option to qemu-img create help. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Mike Day Cc: Kevin Wolf , "qemu-devel@nongnu.org" , Stefan Hajnoczi This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --MRBiHGkxlqqDbgLNDFDCn80KciD2aunck Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 05/12/2014 09:36 AM, Mike Day wrote: > On Mon, May 12, 2014 at 11:20 AM, Eric Blake wrote:= >> Online where? In 'qemu-img --help', or on some web page (at what URL)= ? >=20 > http://qemu.weilnetz.de/qemu-doc.html#vm_005fsnapshots Not an official qemu reference; nothing we can do about out-of-date third-party references. >=20 > -o backing file is not documented in the help command. Ah, but it is: $ qemu-img create -f qcow2 -o help Supported options: size Virtual disk size compat Compatibility level (0.10 or 1.1) backing_file File name of a base image backing_fmt Image format of the base image encryption Encrypt the image cluster_size qcow2 cluster size preallocation Preallocation mode (allowed values: off, metadata) lazy_refcounts Postpone refcount updates and more importantly, it only appears in the help output of -f modes that actually support a backing file. Contrast: $ qemu-img create -f raw -o help Supported options: size Virtual disk size --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --MRBiHGkxlqqDbgLNDFDCn80KciD2aunck 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/ iQEcBAEBCAAGBQJTcO6UAAoJEKeha0olJ0NqjfMH/1/s8WLncXdobTWwj/3gc7sw O88iGODF9r/m9EreThZ7EeQ1DbyA4QO/si0CajKPY1FwJ13Vor6ceBgs+rcA2N/d PhrBpzS98r0Dnosrgeewb3KzXy5ay8ydbIUTfDJzWMlcnhsFVbM3yTSRJQ/aaT4v UqnlngQJ6sM6+n1aHB+gsVmEyBK4YXMUjwFoJ2kmAogEACGycNw4zCQaDkDeHCuq Mo1SuPKvCcafywfs5lanIRlx5RatSNiwDa50gVKXr/4WhIDwjzC6EokVwYxUCFxH aiGIBWgTdzbBeqOgzE9/0XBSREoMHeYfDbYP0CdbgbLa1k3coAVqk+F8CSxmZEU= =rNgw -----END PGP SIGNATURE----- --MRBiHGkxlqqDbgLNDFDCn80KciD2aunck--