LVM管理体系（四）删除逻辑卷（操作步骤）

一、离线逻辑卷

[root@instructor Desktop]# umount /dev/testvg/testlv

二、查看逻辑卷的状态并删除

[root@instructor Desktop]# lvdisplay /dev/testvg/testlv

--- Logical volume ---

LV Path /dev/testvg/testlv

LV Name testlv

VG Name testvg

LV UUID YT3Ccy-eh5I-23fv-g1K6-YWXY-PJrs-rHcNXv

LV Write Access read/write

LV Creation host, time instructor.example.com, 2014-04-15 23:15:37 +0800

LV Status available

# open 0

LV Size 40.00 GiB

Current LE 5120

Segments 3

Allocation inherit

Read ahead sectors auto

- currently set to 256

Block device 253:2

[root@instructor Desktop]# lvremove /dev/testvg/testlv

Do you really want to remove active logical volume testlv? [y/n]: y

Logical volume "testlv" successfully removed

三、查看卷组的状态并删除

[root@instructor Desktop]# vgdisplay /dev/testvg

--- Volume group ---

VG Name testvg

System ID

Format lvm2

Metadata Areas 3

Metadata Sequence No 18

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 0

Open LV 0

Max PV 0

Cur PV 3

Act PV 3

VG Size 59.98 GiB

PE Size 8.00 MiB

Total PE 7677

Alloc PE / Size 0 / 0

Free PE / Size 7677 / 59.98 GiB

VG UUID ARmaCh-vFbx-dqxr-asWG-p11h-1Tzc-dv1OEi

[root@instructor Desktop]# vgremove /dev/testvg

Volume group "testvg" successfully removed

四、查看物理卷的状态并一一删除

[root@instructor Desktop]# pvdisplay /dev/sdb1 /dev/sdc1 /dev/sdd1

"/dev/sdb1" is a new physical volume of "20.00 GiB"

--- NEW Physical volume ---

PV Name /dev/sdb1

VG Name

PV Size 20.00 GiB

Allocatable NO

PE Size 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID OIO7pd-B6Ib-YGcr-w8sh-GYsA-zXZG-CsrD3O

"/dev/sdc1" is a new physical volume of "20.00 GiB"

--- NEW Physical volume ---

PV Name /dev/sdc1

VG Name

PV Size 20.00 GiB

Allocatable NO

PE Size 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID WXCfeV-8KYH-ammN-Gine-yjOQ-lbXK-ulEos1

"/dev/sdd1" is a new physical volume of "20.00 GiB"

--- NEW Physical volume ---

PV Name /dev/sdd1

VG Name

PV Size 20.00 GiB

Allocatable NO

PE Size 0

Total PE 0

Free PE 0

Allocated PE 0

PV UUID bdeEPp-L9Az-QVMg-f1O6-gaK0-vRcw-RvL1cF

[root@instructor Desktop]# pvremove /dev/sdb1 /dev/sdc1 /dev/sdd1

Labels on physical volume "/dev/sdb1" successfully wiped

Labels on physical volume "/dev/sdc1" successfully wiped

Labels on physical volume "/dev/sdd1" successfully wiped

[root@instructor Desktop]# pvdisplay

--- Physical volume ---

PV Name /dev/sda3

VG Name GLSguest

PV Size 19.53 GiB / not usable 32.00 MiB

Allocatable yes

PE Size 32.00 MiB

Total PE 624

Free PE 624

Allocated PE 0

PV UUID qK9igJ-bMKg-F2qg-qBsf-CJG9-gz9c-I8Rlcb

--- Physical volume ---

PV Name /dev/sda2

VG Name GLSvg

PV Size 31.25 GiB / not usable 32.00 MiB

Allocatable yes

PE Size 32.00 MiB

Total PE 999

Free PE 131

Allocated PE 868

PV UUID YOBheN-WgGO-wKHY-7Gdb-gdAz-aBui-R1IAHx

[root@instructor Desktop]#