[linux-lvm] lvm autogrow grows more than allowed virtual size

[Stefan Priebe - Profihost AG <s.priebe@profihost.ag>]

Hello list,
  i sent this smail again as it had a wrong subject.

lvm autogrow grows more than allowed virtual size.

Kernel: 3.5-rc7
lvm/dmeventd: up2date git version 186a2772

I created my thin disk like this:
lvcreate --poolmetadatasize 5G -L 10G -T thinvol/pool1 -V 100G --name disk1

After some autoresizing lvs looks like this:
# lvs
   LV    VG      Attr     LSize   Pool  Origin Data%  Move Log Copy% Convert
   disk1 thinvol Vwi-a-tz 100,00g pool1         22,95
   pool1 thinvol twi-a-tz  33,77g               67,97

When i copy constantly data to my device - i end up here:
# lvs
   LV    VG      Attr     LSize   Pool  Origin Data%  Move Log Copy% Convert
   disk1 thinvol Vwi-aotz 100,00g pool1         99,96
   pool1 thinvol twi-a-tz 123,86g               80,71

So the pool is bigger than disk1 and the 23,86GB will never get used as 
the disk is FULL.

Is this expected?

Greets
Stefan