Description of problem:
system-config-lvm trashes sytem when trying to move a partition. It also makes
lvm inaccessible until reboot. 

pvmove however only fails and allows a pvmove --abort to stop the move 

Version-Release number of selected component (if applicable):
  LVM version:     2.02.06 (2006-05-12)
  Library version: 1.02.07 (2006-05-11)
  Driver version:  4.7.0

How reproducible:
always

Steps to Reproduce:
lvm> pvmove -v -n LogVol00 /dev/sdb1 /dev/sda2
    Finding volume group "VolGroup00"
    Archiving volume group "VolGroup00" metadata (seqno 21).
    Creating logical volume pvmove0
    Moving 1000 extents of logical volume VolGroup00/LogVol00
    Found volume group "VolGroup00"
    Updating volume group metadata
    Creating volume group backup "/etc/lvm/backup/VolGroup00" (seqno 22).
    Found volume group "VolGroup00"
    Found volume group "VolGroup00"
    Suspending VolGroup00-LogVol00 (253:0)
    Found volume group "VolGroup00"
    Creating VolGroup00-pvmove0
    Loading VolGroup00-pvmove0 table
  device-mapper: reload ioctl failed: Invalid argument
  ABORTING: Temporary mirror activation failed.  Run pvmove --abort.
    Found volume group "VolGroup00"
    Loading VolGroup00-pvmove0 table
  device-mapper: reload ioctl failed: Invalid argument
    Loading VolGroup00-LogVol00 table
  device-mapper: reload ioctl failed: Invalid argument
lvm> pvmove --abort
  WARNING: dev_open(/dev/sda2) called while suspended
  WARNING: dev_open(/dev/sdb1) called while suspended
  device-mapper: resume ioctl failed: Invalid argument
  Unable to resume VolGroup00-pvmove0 (253:2)

  
Actual results:
If using system-config-lvm the whole system hangs, leaving it unusable and have
to use rescuecd to get it back up.

Expected results:
The partition beeing moved...

Additional info:
According to information on the net it should be sufficient to upgrade to a
newer version of lvm. Not tested by me though.