deus@deus:/$ sudo vgdisplay
  /dev/evms/lvm2/vg/ROOT: read failed after 0 of 4096 at 0: Input/output error
  /dev/evms/lvm2/vg/home: read failed after 0 of 4096 at 0: Input/output error
  --- Volume group ---
  VG Name               vg
  System ID             
  Format                lvm2
  Metadata Areas        4
  Metadata Sequence No  8
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               1
  Max PV                0
  Cur PV                4
  Act PV                4
  VG Size               879,20 GB
  PE Size               4,00 MB
  Total PE              225074
  Alloc PE / Size       164608 / 643,00 GB
  Free  PE / Size       60466 / 236,20 GB
  VG UUID               4DctYW-ggi4-bv1T-X5SY-XrSB-tfUh-4zjgJu