Sam Sharpe lists.redhat@samsharpe.net writes:
On 5 February 2011 20:53, Nikolaus Rath Nikolaus@rath.org wrote:
JFTR, unfortunately PVs cannot be made smaller. The whole idea of LVM is to do all the resize operations *within* the containers.
JFTR, unfortunately, you'll need to raise a bug against the pvresize manpage then...
http://linux.die.net/man/8/pvresize
Shrink the PV on /dev/sda1 prior to shrinking the partition with fdisk (ensure that the PV size is appropriate for your intended new partition size):
pvresize --setphysicalvolumesize 40G /dev/sda1
When filing the report, please state why your assertion "for the record" is correct over the maintainer's.
You can shrink a PV, but you will loose the extents that are stored in the space that you have truncated. I don't consider that resizing.
From the same manpage that you looked up:
,---- | pvresize will refuse to shrink PhysicalVolume if it has allocated | extents after where its new end would be. In the future, it should | relocate these elsewhere in the volume group if there is sufficient free | space, like pvmove does. `----
Unfortunately, pvmove can only move extends to other PVs but not to a different location in the same PV.
Why so aggressive?
-Nikolaus