[root@localhost ~(keystone_admin)]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/loop1
  VG Name               cinder-volumes
  PV Size               20.60 GiB / not usable 2.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              5273
  Free PE               5273
  Allocated PE          0
  PV UUID               1Q3SQ1-GLGH-EETE-rsRh-aBPB-OJRQ-RBdywq

  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               centos
  PV Size               930.01 GiB / not usable 3.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              238082
  Free PE               16
  Allocated PE          238066
  PV UUID               JlacKu-Gyid-RoM7-Z1vE-M4be-y7ZC-kDwI51

  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               centos
  PV Size               1.09 TiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              285567
  Free PE               0
  Allocated PE          285567
  PV UUID               sN5WQT-jThp-zbfS-BNmp-YIYK-rnDH-xcczLB

[root@localhost ~(keystone_admin)]# vgdisplay
  --- Volume group ---
  VG Name               cinder-volumes
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               20.60 GiB
  PE Size               4.00 MiB
  Total PE              5273
  Alloc PE / Size       0 / 0
  Free  PE / Size       5273 / 20.60 GiB
  VG UUID               xTZFna-ocMU-Ea0r-iXsK-XWld-kwXa-pgAbER

  --- Volume group ---
  VG Name               centos
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               2.00 TiB
  PE Size               4.00 MiB
  Total PE              523649
  Alloc PE / Size       523633 / 2.00 TiB
  Free  PE / Size       16 / 64.00 MiB
  VG UUID               ev1UUy-9PVV-5OZf-Kwim-qaCZ-9dqa-DZQp8P

[root@localhost ~(keystone_admin)]# lvdisplay
  --- Logical volume ---
  LV Path                /dev/centos/swap
  LV Name                swap
  VG Name                centos
  LV UUID                sSRNre-95Pf-phfB-zGjo-UhC4-QPKu-pk3jML
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2015-10-25 15:09:59 -0400
  LV Status              available
  # open                 2
  LV Size                7.88 GiB
  Current LE             2016
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:1

  --- Logical volume ---
  LV Path                /dev/centos/home
  LV Name                home
  VG Name                centos
  LV UUID                Kg7w5I-MZJf-5fkP-3ipk-Lm1t-ct6R-n3DcJ8
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2015-10-25 15:10:00 -0400
  LV Status              available
  # open                 1
  LV Size                1.94 TiB
  Current LE             508817
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:2

  --- Logical volume ---
  LV Path                /dev/centos/root
  LV Name                root
  VG Name                centos
  LV UUID                ul7Mge-YT0R-LFTh-ckf5-cDlG-X9sr-3DLonp
  LV Write Access        read/write
  LV Creation host, time localhost.localdomain, 2015-10-25 15:10:03 -0400
  LV Status              available
  # open                 1
  LV Size                50.00 GiB
  Current LE             12800
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           253:0