[linux-lvm] pvmove hangs

[Alasdair G Kergon]

On Sun, Aug 17, 2003 at 08:26:03PM +0200, Jan Niehusmann wrote:
> only reads ~30MB/s with dd. The only strange thing I saw was that there
> sometimes where some seconds without any disk activity at all. 

That'll be because of the pvmove polling mode - by default
it only checks (and displays) each segment's pvmove progress
every 15 seconds.   For 5 sec. intervals use pvmove -i5
or for best performance (but no progress displays *during*
segments) try -i0.

Alasdair