System with Logical Volume (LV) snapshot fails to boot

Issue

• System with Logical Volume (LV) snapshot fails to boot
• /mnt/sysimage is not mounted at all

• Rescue Mode fails to mount the root LV with the backtrace similar to:

  File "/usr/bin/anaconda", line 873, in <module>
          rescue.runRescue(anaconda, instClass)
  File "/usr/lib/anaconda/rescue.py", line 327, in runRescue
          storage.storageInitialize(anaconda)
  File "/usr/lib/anaconda/storage/__init__.py", line 109, in storageInitialize    
          storage.reset(examine_all=examine_all)
  File "/usr/lib/anaconda/storage/__init__.py", line 468, in reset
          self.devicetree.populate(prog)
  File "/usr/lib/anaconda/storage/devicetree.py", line 2237, in populate
          if self._setupLvs():n
  File "/usr/lib/anaconda/storage/devicetree.py", line 2143, in _setupLvs
          if self.handleVgLvs(device):
  File "/usr/lib/anaconda/storage/devicetree.py", line 1706, in handleVgLvs
          ret = addLV(*lv) or ret
  File "/usr/lib/anaconda/storage/devicetree.py", line 1607, in addLV
          "failed to locate origin lv")
  File "/usr/lib/anaconda/storage/devicetree.py", line 1572, in addRequiredLV
          addLV(lv_info[name])
  
          KeyError: 'r6vg-lv_home'