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1.LVM:
[root@vmfs ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sdg
  VG Name               db_v4
  PV Size               2.00 GB / not usable 0  
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              511
  Free PE               1
  Allocated PE          510
  PV UUID               MlB8lE-H3DL-RCcf-p5Di-J6A2-INLc-zw328m
  
  --- Physical volume ---
  PV Name               /dev/sdf
  VG Name               db_v3
  PV Size               2.00 GB / not usable 0  
  Allocatable           yes
  PE Size (KByte)       4096
  Total PE              511
  Free PE               115
  Allocated PE          396
  PV UUID               2KsemU-DsQQ-GR8k-nnR2-Zm7M-nUCb-yXuUR5
  
  --- Physical volume ---


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