HDD取り外し

まず使用状態を確認。
/dev/dm-3のAllocated PEをみると領域が使用されている。

hostname ~ # pvdisplay 
  --- Physical volume ---
  PV Name               /dev/dm-3
  VG Name               VG00
  PV Size               297.15 GB / not usable 2.00 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              76069
  Free PE               59173
  Allocated PE          16896
  PV UUID               dvTPeU-5bjw-XSGk-ezTe-bMeM-3yh7-eN7Ja0
   
  --- Physical volume ---
  PV Name               /dev/dm-0
  VG Name               VG00
  PV Size               74.53 GB / not usable 3.08 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              19079
  Free PE               19079
  Allocated PE          0
  PV UUID               844gZd-qEP0-2tcC-Fwrv-iauq-GGAF-iUouTa

/dev/dm-3を取り外したいので、pvmove /dev/dm-3する。

hostname ~ # pvmove /dev/dm-3 
  /dev/dm-3: Moved: 0.3%
  /dev/dm-3: Moved: 0.6%
  /dev/dm-3: Moved: 0.9%
   # 略
  /dev/dm-3: Moved: 99.1%
  /dev/dm-3: Moved: 99.5%
  /dev/dm-3: Moved: 99.8%
  /dev/dm-3: Moved: 100.0%

結果を確認。
ちゃんと/dev/dm-3のAllocated PEが0になっている。
・・・でも、Allocatableがyesのまま。

hostname ~ # pvdisplay 
  --- Physical volume ---
  PV Name               /dev/dm-3
  VG Name               VG00
  PV Size               297.15 GB / not usable 2.00 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              76069
  Free PE               76069
  Allocated PE          0
  PV UUID               dvTPeU-5bjw-XSGk-ezTe-bMeM-3yh7-eN7Ja0
   
  --- Physical volume ---
  PV Name               /dev/dm-0
  VG Name               VG00
  PV Size               74.53 GB / not usable 3.08 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              19079
  Free PE               2183
  Allocated PE          16896
  PV UUID               844gZd-qEP0-2tcC-Fwrv-iauq-GGAF-iUouTa

Allocatable noにするため、vgreduceする。

hostname ~ # vgreduce VG00 /dev/dm-3 
  Removed "/dev/dm-3" from volume group "VG00"
hostname ~ # pvdisplay 
  --- Physical volume ---
  PV Name               /dev/dm-0
  VG Name               VG00
  PV Size               74.53 GB / not usable 3.08 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              19079
  Free PE               2183
  Allocated PE          16896
  PV UUID               844gZd-qEP0-2tcC-Fwrv-iauq-GGAF-iUouTa
   
  "/dev/dm-3" is a new physical volume of "297.15 GB"
  --- NEW Physical volume ---
  PV Name               /dev/dm-3
  VG Name               
  PV Size               297.15 GB
  Allocatable           NO
  PE Size (KByte)       0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               dvTPeU-5bjw-XSGk-ezTe-bMeM-3yh7-eN7Ja0

そして最後にpvremove

hostname ~ # pvremove /dev/dm-3 
  Labels on physical volume "/dev/dm-3" successfully wiped
hostname ~ # pvdisplay 
  --- Physical volume ---
  PV Name               /dev/dm-0
  VG Name               VG00
  PV Size               74.53 GB / not usable 3.08 MB
  Allocatable           yes 
  PE Size (KByte)       4096
  Total PE              19079
  Free PE               2183
  Allocated PE          16896
  PV UUID               844gZd-qEP0-2tcC-Fwrv-iauq-GGAF-iUouTa

いじょ。