From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:34913) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UfEgr-0008Jh-9t for qemu-devel@nongnu.org; Wed, 22 May 2013 15:27:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UfEgm-0006Qi-7m for qemu-devel@nongnu.org; Wed, 22 May 2013 15:27:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:28227) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UfEgm-0006Qe-0f for qemu-devel@nongnu.org; Wed, 22 May 2013 15:27:08 -0400 Date: Wed, 22 May 2013 20:26:56 +0100 From: "Richard W.M. Jones" Message-ID: <20130522192656.GX4515@redhat.com> References: <20130516134415.GB9846@redhat.com> <20130522164219.GW4515@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [Qemu-devel] [RFC] block-trace Low Level Command Supporting Disk Introspection List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Wolfgang Richter Cc: Paolo Bonzini , qemu-devel , stefanha On Wed, May 22, 2013 at 02:32:37PM -0400, Wolfgang Richter wrote: > On Wed, May 22, 2013 at 12:42 PM, Richard W.M. Jones wrote: > > > Run up to two extra guestfish instances, with the same result. The > > fourth guestfish instance hangs at the 'run' command until one of the > > first three is told to exit. > > > And your interested on being notified when a snapshot is "safe" to read > from? > Or is it valuable to try reading immediately? I'm not sure I understand the question. I assumed (maybe wrongly) that if we had an NBD address (ie. Unix socket or IP:port) then we'd just connect to that and go. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW