#echo "- - -" > /sys/class/scsi_host/host0/scan
#echo "- - -" > /sys/class/scsi_host/host1/scan
#echo "- - -" > /sys/class/scsi_host/host2/scan
for i in 0 1 2; do echo "- - -" > /sys/class/scsi_host/host$i/scan; done

ll /dev/sd*
fdisk /dev/sdb
pvcreate /dev/sdb1
vgextend /dev/VolGroup00 /dev/sdb1
lvresize -l+100%PV /dev/VolGroup00/LogVol00 /dev/sdb1
resize2fs /dev/VolGroup00/LogVol00