From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:51670) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm0wF-000077-Kq for qemu-devel@nongnu.org; Tue, 03 Jul 2012 07:06:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sm0w9-0003Fv-Az for qemu-devel@nongnu.org; Tue, 03 Jul 2012 07:06:35 -0400 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:47086) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm0w8-0003Cj-IU for qemu-devel@nongnu.org; Tue, 03 Jul 2012 07:06:29 -0400 Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 3 Jul 2012 16:36:18 +0530 Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q63B5s9K590192 for ; Tue, 3 Jul 2012 16:35:54 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q63GZCqp012326 for ; Wed, 4 Jul 2012 02:35:12 +1000 From: xiawenc@linux.vnet.ibm.com Date: Tue, 3 Jul 2012 19:05:44 +0800 Message-Id: <1341313544-6256-1-git-send-email-xiawenc@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH] add text about how to use qemu-nbd with qemu List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: pbonzini@redhat.com, stefanha@linux.vnet.ibm.com, anthony@codemonkey.ws, Wenchao Xia From: Wenchao Xia Qemu system emulator reports only fails that make people confused about why, when it is invoked with nbd block device tring to connect qemu-nbd server. In fact qemu will try connect server for several times but server only accept one connect by default. I paid some times to find out why it fails. This patch add special text to explain how to use it in such case. Signed-off-by: Wenchao Xia --- qemu-nbd.texi | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 6955d90..014040a 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -44,6 +44,12 @@ Export QEMU disk image using NBD protocol. display this help and exit @item -V, --version output version information and exit + + Note: When qemu-nbd was used to export a disk that would be used by QEMU +block device, -t or --persistent must be set for that QEMU nbd client would try +connect more than one time. For eg: + qemu-nbd ./simple.img -p 10809 -t + qemu -hdb nbd:127.0.0.1:10809 @end table @c man end -- 1.7.1