From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhang Haoyu" Subject: [question] updating the base image for all clones which have been running for months Date: Mon, 3 Nov 2014 20:04:14 +0800 Message-ID: <201411032004120698212@sangfor.com> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 7bit Cc: "Kevin Wolf" , "Stefan Hajnoczi" To: "qemu-devel" , "kvm" Return-path: Received: from smtp.sanfor.com ([58.251.49.30]:58325 "EHLO mail.sangfor.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751846AbaKCMEn (ORCPT ); Mon, 3 Nov 2014 07:04:43 -0500 Sender: kvm-owner@vger.kernel.org List-ID: Hi, all I used base image A to clone so many vm, after running for months, each vm has its own private applications and data, which maybe different from each other. Now, I want to install some applications for all of the clones, what should I do? Can I rebase image A to B which have the applications to be installed, then change the base image to B for all clones? I don't think it can work, the clone images maybe corrupted latter. If the clone image's space is not enough, what will happen? Any ideas? My bad idea is to push the applications from center to each clone's guest-agent, which is responsible to install the applications. Thanks, Zhang Haoyu