[linux-lvm] pvmove on the same PV
Aran Cox
acox at ia.primustel.com
Tue Dec 7 02:37:13 UTC 2004
Is it possible to move an extent from one position to another on the
same PV? It used to be possible under LVM1.
The reason I ask is that a long time ago I wrote a sort of LVM
defrag/repacker program. Basically it was a higher level interface to
the pvmove program. I wrote it because when I would shrink a LV and
enlarge another on a mostly utilized VG the logical extents would end up
highly non-contiguous, especially after a few such re-organizations.
In any case, I was updating it for LVM2 today and it seems that pvmove
refuses to move an extent from one position on a PV to another position
on the same PV. I guess I can work around this but it means lots of
wasted moves. Also, I'd be happy to share this tool if anyone's
remotely interested, once I've updated it for LVM2.
Thanks,
--
Aran Cox <acox at ia.primustel.com>
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