From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56689) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wkibz-0008Lq-AB for qemu-devel@nongnu.org; Wed, 14 May 2014 19:29:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wkibu-00006C-MM for qemu-devel@nongnu.org; Wed, 14 May 2014 19:29:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:63393) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wkibu-00005E-FJ for qemu-devel@nongnu.org; Wed, 14 May 2014 19:29:18 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s4ENTHqR004648 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 14 May 2014 19:29:17 -0400 From: Matthew Booth Date: Wed, 14 May 2014 19:28:43 -0400 Message-Id: <1400110123-2692-4-git-send-email-mbooth@redhat.com> In-Reply-To: <1400110123-2692-1-git-send-email-mbooth@redhat.com> References: <1400110123-2692-1-git-send-email-mbooth@redhat.com> Subject: [Qemu-devel] [PATCH 4/4] curl: Add usage documentation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com Signed-off-by: Matthew Booth --- qemu-options.hx | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 781af14..7587bce 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2191,6 +2191,74 @@ qemu-system-x86_64 --drive file=gluster://192.0.2.1/testvol/a.img @end example See also @url{http://www.gluster.org}. + +@item HTTP/HTTPS/FTP/FTPS/TFTP +QEMU supports read-only access to files accessed over http(s), ftp(s) and tftp. + +Syntax using a single filename: +@example +://[[:]@@]/ +@end example + +where: +@table @option +@item protocol +'http', 'https', 'ftp', 'ftps', or 'tftp'. + +@item username +Optional username for authentication to the remote server. + +@item password +Optional password for authentication to the remote server. + +@item host +Address of the remote server. + +@item path +Path on the remote server, including any query string. +@end table + +The following options are also supported: +@table @option +@item url +The full URL when passing options to the driver explicitly. + +@item readahead +The amount of data to read ahead with each range request to the remote server. +This value may optionally have the suffix 'T', 'G', 'M', 'K', 'k' or 'b'. If it +does not have a suffix, it will be assumed to be in bytes. The value must be a +multiple of 512 bytes. It defaults to 256k. + +@item sslverify +Whether to verify the remote server's certificate when connecting over SSL. It +can have the value 'on' or 'off'. It defaults to 'on'. +@end table + +Note that when passing options to qemu explicitly, @option{driver} is the value +of . + +Example: boot from a remote Fedora 20 live ISO image +@example +qemu-system-x86_64 --drive media=cdrom,file=http://dl.fedoraproject.org/pub/fedora/linux/releases/20/Live/x86_64/Fedora-Live-Desktop-x86_64-20-1.iso,readonly + +qemu-system-x86_64 --drive media=cdrom,file.driver=http,file.url=http://dl.fedoraproject.org/pub/fedora/linux/releases/20/Live/x86_64/Fedora-Live-Desktop-x86_64-20-1.iso,readonly +@end example + +Example: boot from a remote Fedora 20 cloud image using a local overlay for +writes, copy-on-read, and a readahead of 64k +@example +qemu-img create -f qcow2 -o backing_file='json:@{"file.driver":"http",, "file.url":"https://dl.fedoraproject.org/pub/fedora/linux/releases/20/Images/x86_64/Fedora-x86_64-20-20131211.1-sda.qcow2",, "file.readahead":"64k"@}' /tmp/Fedora-x86_64-20-20131211.1-sda.qcow2 + +qemu-system-x86_64 -drive file=/tmp/Fedora-x86_64-20-20131211.1-sda.qcow2,copy-on-read=on +@end example + +Example: boot from an image stored on a VMware vSphere server with a self-signed +certificate using a local overlay for writes and a readahead of 64k +@example +qemu-img create -f qcow2 -o backing_file='json:@{"file.driver":"https",, "file.url":"https://user:password@@vsphere.example.com/folder/test/test-flat.vmdk?dcPath=Datacenter&dsName=datastore1",, "file.sslverify":"off",, "file.readahead":"64k"@}' /tmp/test.qcow2 + +qemu-system-x86_64 -drive file=/tmp/test.qcow2 +@end example ETEXI STEXI -- 1.9.0