Comment 2 for bug 321667

I experienced the same bug on 9.04
I tried moving the data from a 1TB (sdc) disk to a 1.5TB (sdh) disk and at 40% the machine had a kernel panic: out of memory

After the reboot I started pvmove -i 60 -v
At the moment it's at
  /dev/sdc: Moved: 15.5%
    Finding all volume groups
    Finding volume group "BFG"
  /dev/sdc: Moved: 15.8%

And I'm already getting 60 identical processes like this one
 8385 ? S<s 0:00 (lvm2copy vgchange -a y

# ps axw | grep lvm| wc -l
60