From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx01.extmail.prod.ext.phx2.redhat.com [10.5.110.25]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u8HErIHa002725 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Sat, 17 Sep 2016 10:53:18 -0400 Received: from smtp1.dds.nl (smtp1.dds.nl [83.96.147.43]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E6CA4B6F4D for ; Sat, 17 Sep 2016 14:53:15 +0000 (UTC) Received: from webmail.dds.nl (app1.dds.nl [81.21.136.61]) by smtp1.dds.nl (Postfix) with ESMTP id 0CFD1A6807 for ; Sat, 17 Sep 2016 16:53:16 +0200 (CEST) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Date: Sat, 17 Sep 2016 16:53:14 +0200 From: Xen In-Reply-To: <8340e33605f0a84b10ed1d626cfecfbe@dds.nl> References: <368387847.156920.1474117496841.ref@mail.yahoo.com> <368387847.156920.1474117496841@mail.yahoo.com> <8340e33605f0a84b10ed1d626cfecfbe@dds.nl> Message-ID: <8ebe6d1f9dc01bf7bfa843d8dcf3a0b8@dds.nl> Subject: Re: [linux-lvm] creating DD copies of disks Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@redhat.com Xen schreef op 17-09-2016 16:16: > I just won't be able to use the old system until I change it back. > Time to test, isn't it. Indeed both Linux and Windows have no issues with the new disk, I think. I was making a backup onto a bigger-sized disk, but neither Windows nor Linux have an issue with it. They just see the old partition table of the old disk and are fine with that. Now I only need to know if the Linux system will run with the new disk, but I'm sure there won't be issues there now. The system is not actually *on* that disk. Call it a data disk for an SSD system. So perhaps you can see why I would want to have the two disks loaded at the same time: - if they work, I can copy data even after the DD (perhaps, to make some rsync copy as you indicate) but now I already have all the required structures (partition tables...) without any work. - I wasn't actually yet done with the old disk. This was also just research. Better make a backup first before you finalize things. I want to do more work on the "old" system before I finalize things. But having a backup sitting there that I can use is a plus. Having to not be able to use both disks at the same time is a huge detriment. It is also not that hard now to change the system back but I still don't know how I can manually change the UUIDs that a VG/LV references. It is a huge plus if I can just exchange one PV with another at will.