21:35:04 root[pts/0]@grumpy ~# vgdisplay
/dev/sda: read failed after 0 of 4096 at 0: Input/output error
/dev/sdd: read failed after 0 of 4096 at 0: Input/output error
--- Volume group ---
VG Name backup
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 6.00 GB
PE Size 4.00 MB
Total PE 1535
Alloc PE / Size 768 / 3.00 GB
Free PE / Size 767 / 3.00 GB
VG UUID KIAO6R-BN19-SWvs-EoF0-Owqg-o2SQ-hpWOxt
--- Volume group ---
VG Name sys
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.93 GB
PE Size 4.00 MB
Total PE 495
Alloc PE / Size 241 / 964.00 MB
Free PE / Size 254 / 1016.00 MB
VG UUID xYm2fk-TL7y-lIlx-Z1H8-6xwe-bjYq-05YqWN