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�ｿｽﾅ終�ｿｽX�ｿｽV�ｿｽ�ｿｽ�ｿｽF 2017.11.25

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�ｿｽ�ｿｽVG�ｿｽ�ｿｽ�ｿｽ�ｿｽPV�ｿｽ尞�

[root@centos ~]# vgdisplay -v�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@PV�ｿｽ尞懶ｿｽOVG�ｿｽｵ照会ｿｽ
    Finding all volume groups
    Finding volume group "VolGroup00"
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        3
  Metadata Sequence No  22
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                3
  Act PV                3
  VG Size               5.81 GB
  PE Size               32.00 MB
  Total PE              186
  Alloc PE / Size       155 / 4.84 GB
  Free  PE / Size       31 / 992.00 MB
  VG UUID               9wGRk1-6iy1-03Hi-BX2b-W8u8-saiV-P6wfiL

  --- Logical volume ---
  LV Name                /dev/VolGroup00/LogVol00
  VG Name                VolGroup00
  LV UUID                H37kZ2-u6pm-mwul-k7Wr-MBfg-Mh3T-4sOg8M
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                3.38 GB
  Current LE             108
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Name                /dev/VolGroup00/LogVol01
  VG Name                VolGroup00
  LV UUID                YBWq23-hqGZ-1atm-NiKl-T8QL-yr8o-ZjEeAa
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                512.00 MB
  Current LE             16
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

  --- Physical volumes ---
  PV Name               /dev/sda2
  PV UUID               uD1dJT-5X84-uQzr-t32U-ys6O-r203-rPZ8Uh
  PV Status             allocatable
  Total PE / Free PE    124 / 0

�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽ(�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ)�ｿｽ|�ｿｽ|
  PV Name               /dev/sdb1
  PV UUID               XeklfB-SmXh-rBVU-XCE7-3ebb-wqii-LQ3R6Y
  PV Status             allocatable
  Total PE / Free PE    31 / 31
�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽ(�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾜゑｿｽ)�ｿｽ|�ｿｽ|

[root@centos ~]# vgreduce VolGroup00 /dev/sdb1�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@VG�ｿｽ�ｿｽ�ｿｽ�ｿｽPV�ｿｽ尞�
  Removed "/dev/sdb1" from volume group "VolGroup00"

[root@centos ~]# vgdisplay -v�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@PV�ｿｽ尞懶ｿｽ�ｿｽVG�ｿｽｵ照会ｿｽ
    Finding all volume groups
    Finding volume group "VolGroup00"
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  23
  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               4.84 GB
  PE Size               32.00 MB
  Total PE              155
  Alloc PE / Size       155 / 4.84 GB
  Free  PE / Size       0 / 0
  VG UUID               9wGRk1-6iy1-03Hi-BX2b-W8u8-saiV-P6wfiL

  --- Logical volume ---
  LV Name                /dev/VolGroup00/LogVol00
  VG Name                VolGroup00
  LV UUID                H37kZ2-u6pm-mwul-k7Wr-MBfg-Mh3T-4sOg8M
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                3.38 GB
  Current LE             108
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Name                /dev/VolGroup00/LogVol01
  VG Name                VolGroup00
  LV UUID                YBWq23-hqGZ-1atm-NiKl-T8QL-yr8o-ZjEeAa
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                512.00 MB
  Current LE             16
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

  --- Physical volumes ---
  PV Name               /dev/sda2
  PV UUID               uD1dJT-5X84-uQzr-t32U-ys6O-r203-rPZ8Uh
  PV Status             allocatable
  Total PE / Free PE    124 / 0

�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽﾈゑｿｽ�ｿｽ|�ｿｽ|

�ｿｽ�ｿｽPV�ｿｽ尞�

[root@centos ~]# pvdisplay�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@PV�ｿｽ尞懶ｿｽOPV�ｿｽｵ照会ｿｽ
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               VolGroup00
  PV Size               3.90 GB / not usable 24.72 MB
  Allocatable           yes (but full)
  PE Size (KByte)       32768
  Total PE              124
  Free PE               0
  Allocated PE          124
  PV UUID               uD1dJT-5X84-uQzr-t32U-ys6O-r203-rPZ8Uh

�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽ(�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ)�ｿｽ|�ｿｽ|
  "/dev/sdb1" is a new physical volume of "1019.72 MB"
  --- NEW Physical volume ---
  PV Name               /dev/sdb1
  VG Name
  PV Size               1019.72 MB
  Allocatable           NO
  PE Size (KByte)       0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               XeklfB-SmXh-rBVU-XCE7-3ebb-wqii-LQ3R6Y
�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽ(�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾜゑｿｽ)�ｿｽ|�ｿｽ|

[root@centos ~]# pvremove /dev/sdb1�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@PV�ｿｽ尞�
  /dev/cdrom: open failed: �ｿｽﾇみ搾ｿｽ�ｿｽﾝ撰ｿｽp�ｿｽt�ｿｽ@�ｿｽC�ｿｽ�ｿｽ�ｿｽV�ｿｽX�ｿｽe�ｿｽ�ｿｽ�ｿｽﾅゑｿｽ
  Attempt to close device '/dev/cdrom' which is not open.
  Labels on physical volume "/dev/sdb1" successfully wiped

[root@centos ~]# pvdisplay�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@PV�ｿｽ尞懶ｿｽ�ｿｽPV�ｿｽｵ照会ｿｽ
  --- Physical volume ---
  PV Name               /dev/sda2
  VG Name               VolGroup00
  PV Size               3.90 GB / not usable 24.72 MB
  Allocatable           yes (but full)
  PE Size (KByte)       32768
  Total PE              124
  Free PE               0
  Allocated PE          124
  PV UUID               uD1dJT-5X84-uQzr-t32U-ys6O-r203-rPZ8Uh

�ｿｽ|�ｿｽ|�ｿｽ尞懶ｿｽﾎ擾ｿｽPV�ｿｽ�ｿｽ�ｿｽﾈゑｿｽ�ｿｽ|�ｿｽ|

�ｿｽ�ｿｽ�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ尞�

[root@centos ~]# fdisk /dev/sdb�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@�ｿｽ尞懶ｿｽﾎ象ハ�ｿｽ[�ｿｽh�ｿｽf�ｿｽB�ｿｽX�ｿｽN�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾝ抵ｿｽ

�ｿｽR�ｿｽ}�ｿｽ�ｿｽ�ｿｽh (m �ｿｽﾅヘ�ｿｽ�ｿｽ�ｿｽv): p�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@p(�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ\�ｿｽ�ｿｽ)�ｿｽ�ｿｽ�ｿｽ�ｿｽ

Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = �ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ_�ｿｽ�ｿｽ of 16065 * 512 = 8225280 bytes

�ｿｽf�ｿｽo�ｿｽC�ｿｽX Boot      Start         End      Blocks   Id  System
/dev/sdb1               1         130     1044193+  8e  Linux LVM

�ｿｽR�ｿｽ}�ｿｽ�ｿｽ�ｿｽh (m �ｿｽﾅヘ�ｿｽ�ｿｽ�ｿｽv): d�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@d(�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ尞�)�ｿｽ�ｿｽ�ｿｽ�ｿｽ
Selected partition 1

�ｿｽR�ｿｽ}�ｿｽ�ｿｽ�ｿｽh (m �ｿｽﾅヘ�ｿｽ�ｿｽ�ｿｽv): p�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@p(�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ\�ｿｽ�ｿｽ)�ｿｽ�ｿｽ�ｿｽ�ｿｽ

Disk /dev/sdb: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 cylinders
Units = �ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ_�ｿｽ�ｿｽ of 16065 * 512 = 8225280 bytes

�ｿｽf�ｿｽo�ｿｽC�ｿｽX Boot      Start         End      Blocks   Id  System
�ｿｽ|�ｿｽ|�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾈゑｿｽ�ｿｽ|�ｿｽ|

�ｿｽR�ｿｽ}�ｿｽ�ｿｽ�ｿｽh (m �ｿｽﾅヘ�ｿｽ�ｿｽ�ｿｽv): w�ｿｽ@�ｿｽ�ｿｽ�ｿｽ@w(�ｿｽp�ｿｽ[�ｿｽe�ｿｽB�ｿｽV�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽf�ｿｽB�ｿｽX�ｿｽN�ｿｽﾖ擾ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ)�ｿｽ�ｿｽ�ｿｽ�ｿｽ
�ｿｽﾌ茨ｿｽe�ｿｽ[�ｿｽu�ｿｽ�ｿｽ�ｿｽﾍ鯉ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾜゑｿｽ�ｿｽ�ｿｽ�ｿｽI

ioctl() �ｿｽ�ｿｽ�ｿｽﾄび出�ｿｽ�ｿｽ�ｿｽﾄ領茨ｿｽe�ｿｽ[�ｿｽu�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾄ読搾ｿｽ�ｿｽﾝゑｿｽ�ｿｽﾜゑｿｽ�ｿｽB
�ｿｽf�ｿｽB�ｿｽX�ｿｽN�ｿｽｯ奇ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽ�ｿｽﾜゑｿｽ�ｿｽB

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