21:29:30 root[pts/0]@grumpy ~# pvdisplay
/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
--- Physical volume ---
PV Name /dev/sdc
VG Name backup
PV Size 6.00 GB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 1535
Free PE 767
Allocated PE 768
PV UUID lIbfUN-ysId-civl-giXh-Ssmw-5WJr-wrMohK
--- Physical volume ---
PV Name /dev/sdb2
VG Name sys
PV Size 1.93 GB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 495
Free PE 254
Allocated PE 241
PV UUID kZyBLg-G7xr-NxuS-kLjf-KO2X-xgDZ-f1Y35x