ubuntu@ubuntu:~$ sudo vgchange -a y
  device-mapper: reload ioctl failed: Invalid argument
  device-mapper: reload ioctl failed: Invalid argument
  2 logical volume(s) in volume group "vg_glengoyne" now active

This is what dmesg say.
[17183471.576000] device-mapper: error adding target to table
[17183471.636000] device-mapper: device 9:0 too small for target
[17183471.636000] device-mapper: dm-linear: Device lookup failed
[17183471.636000] device-mapper: error adding target to table