lvdisplay

root@ph-lin01-srv:~# lvdisplay 
  --- Logical volume ---
  LV Name                /dev/ph-lin01-srv/root
  VG Name                ph-lin01-srv
  LV UUID                wgA7Jd-cve5-eK2K-OcUk-yZ43-vvbw-diT892
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                18.88 GiB
  Current LE             4833
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           251:0
   
  --- Logical volume ---
  LV Name                /dev/ph-lin01-srv/swap_1
  VG Name                ph-lin01-srv
  LV UUID                PSsloN-5CiV-sk6e-o7oo-Dhh1-Ns7O-ERthll
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                884.00 MiB
  Current LE             221
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           251:1

pvdisplay

  PV Name               /dev/sda5
  VG Name               ph-lin01-srv
  PV Size               19.76 GiB / not usable 2.00 MiB
  Allocatable           yes 
  PE Size               4.00 MiB
  Total PE              5058
  Free PE               4
  Allocated PE          5054
  PV UUID               ZPDPen-PtVe-KjfJ-nA1U-q67w-fFX7-g4G2to

vgdisplay

root@ph-lin01-srv:~# vgdisplay 
  --- Volume group ---
  VG Name               ph-lin01-srv
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               19.76 GiB
  PE Size               4.00 MiB
  Total PE              5058
  Alloc PE / Size       5054 / 19.74 GiB
  Free  PE / Size       4 / 16.00 MiB
  VG UUID               epYtVK-dwXD-dyQd-5XHT-Xuah-PDFG-SZpmP0