Bug#739855: partman-lvm: Irreproducible metadata size

[st <st@e-head.net>]

Package: partman-lvm
Severity: important
Tags: d-i

Dear Maintainer,

I've created an LVM volume consisting of three 3TB disk at install
time. Now that one of the disks started developing problems I added
another disk of the same size to replace the failing one. Well, I
can't.

The problem seems to be that partman-lvm created PVs with only
195584 units-used-by-pvck allocated for metadata. However, there
is no way to create PVs with less than 1047552 units-used-by-pvck
with the standard pvcreate. No documented one, anyway. So the new
PV has one extent less and I can't pvmove data from the old PV.

Could you kindly make sure your PV creation tool doesn't create
irreplaceable PVs, please?

-- System Information:
Debian Release: 7.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages partman-lvm depends on:
pn  cdebconf-udeb  <none>
pn  di-utils       <none>
pn  lvm2-udeb      <none>
pn  md-modules     <none>
pn  partman-base   <none>

partman-lvm recommends no packages.

partman-lvm suggests no packages.