/dev/dm-17: stat failed: No such file or directory
  Path /dev/dm-17 no longer valid for device(253,17)
  /dev/block/253:17: stat failed: No such file or directory
  Path /dev/block/253:17 no longer valid for device(253,17)
  /dev/debuild/karmic-i386-sbuild-5f323a36-c4e2-486c-8f04-a1fe00c2de55: stat failed: No such file or directory
  Path /dev/debuild/karmic-i386-sbuild-5f323a36-c4e2-486c-8f04-a1fe00c2de55 no longer valid for device(253,17)
  /dev/mapper/debuild-karmic--i386--sbuild--5f323a36--c4e2--486c--8f04--a1fe00c2de55: stat failed: No such file or directory
  Path /dev/mapper/debuild-karmic--i386--sbuild--5f323a36--c4e2--486c--8f04--a1fe00c2de55 no longer valid for device(253,17)
  /dev/dm-19: stat failed: No such file or directory
  Path /dev/dm-19 no longer valid for device(253,19)
  /dev/block/253:19: stat failed: No such file or directory
  Path /dev/block/253:19 no longer valid for device(253,19)
  /dev/mapper/debuild-karmic--i386--sbuild--5f323a36--c4e2--486c--8f04--a1fe00c2de55-cow: stat failed: No such file or directory
  Path /dev/mapper/debuild-karmic--i386--sbuild--5f323a36--c4e2--486c--8f04--a1fe00c2de55-cow no longer valid for device(253,19)
/usr/bin/apt-get  -q update