From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fam Zheng Subject: Re: I/O redirection Guest VM Date: Fri, 14 Mar 2014 14:32:41 +0800 Message-ID: <20140314063241.GI31322@T430.nay.redhat.com> References: <20140314052529.GE31322@T430.nay.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: kvm@vger.kernel.org To: Shivaramakrishnan Vaidyanathan Return-path: Received: from mx1.redhat.com ([209.132.183.28]:17518 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754916AbaCNGcc (ORCPT ); Fri, 14 Mar 2014 02:32:32 -0400 Content-Disposition: inline In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On Fri, 03/14 02:00, Shivaramakrishnan Vaidyanathan wrote: > Hello Fam, > Thanks a lot to your reply. > I think I needed to bit more clear in my explanation. > Here is my requirement: > At first,I have a guest vm with its virtual disk performing no storage > intrusion detection running on top of kvm hypervisor. Then later I create > this new VM app that performs the storage intrusion detection functionality > again running on top of kvm hypervisor.I run nfs share inside this vm. Once > I do this,I need the I/O's that is happening on guest vm to undergo the > intrusion detection functionality before writes are performed on the disks. > > > How could I point the image to the NFS share if the guest vm prior didn't > had this functionality? > And If I do the functionality now,Only NFS-shared partitions could be > intercepted.What about the other partition writes occurring at the guest vm? > Sounds like you need to change the backend of VM on flight to you NFS share. But I don't think it's supported for now. (Assuming you use QEMU as device virtualizer). Fam