# vgs -v
    Finding all volume groups
    Finding volume group "VolGroup01"
    Finding volume group "VolGroup00"
  VG         Attr   Ext    #PV #LV #SN VSize   VFree  VG UUID                               
  VolGroup00 wz--n- 32.00M   1   2   0 297.97G 32.00M lTNy5p-2jyI-x0wv-0wH7-SXUm-nDFx-yDwvBg <- currently booted system is on this
  VolGroup00 wz--n- 32.00M   1   2   0 148.84G 32.00M bvMd4V-tOBD-2zDo-jB3P-OZt2-CGWV-joJPTS
 # vgrename bvMd4V-tOBD-2zDo-jB3P-OZt2-CGWV-joJPTS VolGroup01
  Volume group "VolGroup00" successfully renamed to "VolGroup01"
  /dev/VolGroup00: lstat failed: No such file or directory
# ls /dev/VolGroup00
ls: cannot access /dev/VolGroup00: No such file or directory
 # mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)

# vgs -v
    Finding all volume groups
    Finding volume group "VolGroup01"
    Finding volume group "VolGroup00"
  VG         Attr   Ext    #PV #LV #SN VSize   VFree  VG UUID                               
  VolGroup00 wz--n- 32.00M   1   2   0 297.97G 32.00M lTNy5p-2jyI-x0wv-0wH7-SXUm-nDFx-yDwvBg
  VolGroup01 wz--n- 32.00M   1   2   0 148.84G 32.00M bvMd4V-tOBD-2zDo-jB3P-OZt2-CGWV-joJPTS