http://www.cyberciti.biz/tips/vmware-add-a-new-hard-disk-without-rebooting-guest.html

ls -lart /sys/class/scsi_host  
  
echo "- - -" > /sys/class/scsi_host/host0/scan  
fdisk -l

(no luck)

echo "- - -" > /sys/class/scsi_host/host1/scan  
echo "- - -" > /sys/class/scsi_host/host2/scan  
fdisk -l

(yes !)

fdisk /dev/sdb

(make it Linux LVM c/ t / 8e )

mkfs -t ext4 -c /dev/sdb1  
  
lvdisplay  
  
vgextend vg_stssc /dev/sdb1  
  
lvextend --extents +100%FREE /dev/vg_stssc/lv_root  
resize2fs /dev/vg_stssc/lv_root  
  
lvdisplay  
df -h