From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <50CA0492.1050906@redhat.com> Date: Thu, 13 Dec 2012 16:38:42 +0000 From: "Bryn M. Reeves" MIME-Version: 1.0 References: <50C9F6AF.50908@redhat.com> In-Reply-To: Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] Convert striped lv to single pv on another disk? 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" To: Gianluca Cecchi Cc: LVM general discussion and development On 13/12/12 16:11, Gianluca Cecchi wrote: > I found in another thread that the resulting LV with pvmove remains a > striped one on only one disk as far as its structure is concerned... > with degraded performance... > Have you an example of pvmove command options to test to execute based > on my test? > So that I can verify with my loop devices? Yes, you're right. You will end up with both stripes still present but on a single disk. The best I could do using pvmove was to move individual extents around (!) to make the LV contiguous on-disk. Of course, this doesn't remove the striping and inflates the number of segments since each pair of striped extents effectively becomes a segment. The lvconvert command also still accepts a -i parameter but doesn't do anything useful with it and doesn't report an error. Regards, Bryn.