[linux-lvm] Convert striped lv to single pv on another disk?

Bryn M. Reeves bmr at redhat.com
Thu Dec 13 16:38:42 UTC 2012

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 <n> parameter but doesn't
do anything useful with it and doesn't report an error.


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