标签：系统

实验01    创建逻辑卷

实验目标

从两块磁盘上各取10GB组成20GB的卷组

从卷组中划分一个16GB的逻辑卷

将此逻辑卷格式化并挂载到/mbox

实验步骤

一、为新添加的两块硬盘分区

[[email protected] ~]# fdisk -l | grep LVM           //查看标记为LVM的分区

/dev/sdb1        1      1217    9775521   8e  Linux LVM

/dev/sdc1        1      1217    9775521   8e  Linux LVM

二、创建物理卷pvcreate 分区 分区

[[email protected]~]# pvscan                         //扫描物理卷

No matching physical volumes found

[[email protected]~]# pvdisplay                      //显示物理卷

[[email protected]~]# pvcreate /dev/sdb1 /dev/sdc1   //创建物理卷

Writing physical volume data to disk"/dev/sdb1"

Physical volume "/dev/sdb1"successfully created

Writing physical volume data to disk"/dev/sdc1"

Physical volume "/dev/sdc1"successfully created

PV /dev/sdb1                      lvm2 [9.32 GB]

PV /dev/sdc1                      lvm2 [9.32 GB]

Total: 2 [18.65 GB] / in use: 0 [0   ] / in no VG: 2 [18.65 GB]

"/dev/sdb1" is a new physicalvolume of "9.32 GB"

--- NEW Physical volume ---

PV Name               /dev/sdb1

VG Name

PV Size               9.32 GB

Allocatable           NO

PE Size (KByte)       0

Total PE              0

Free PE               0

Allocated PE          0

PV UUID              jpuMRT-9Xwr-bEKm-Edc1-qhsb-oDiG-AUf5w9

"/dev/sdc1" is a new physicalvolume of "9.32 GB"

--- NEW Physical volume ---

PV Name               /dev/sdc1

VG Name

PV Size               9.32 GB

Allocatable           NO

PE Size (KByte)       0

Total PE              0

Free PE               0

Allocated PE          0

PV UUID              Bkr2nc-yclE-0j1K-UE99-2Pnd-3BaV-wyrqhm

三、创建卷组vgcreate 卷组名 分区 分区

[[email protected]~]# vgscan                                  //扫描卷组

Reading all physical volumes.  This may take a while...

No volume groups found

[[email protected]~]# vgdisplay                               //显示卷组

No volume groups found

[[email protected]~]# vgcreate vg_data /dev/sd{b,c}1        //创建指定名称的卷组

Volume group "vg_data" successfullycreated

Reading all physical volumes.  This may take a while...

Found volume group "vg_data" usingmetadata type lvm2

--- Volume group ---

VG Name               vg_data

System ID

Format                lvm2

Metadata Areas        2

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                2

Act PV                2

VG Size               18.64 GB

PE Size               4.00 MB

Total PE              4772

Alloc PE / Size       0 / 0

Free PE / Size       4772 / 18.64 GB

VG UUID               pA9c9b-hNEB-emWv-c5am-lRgv-rAmf-Ff4egw

四、创建逻辑卷lvcreate -L 大小 -n 逻辑卷名 卷组名

[[email protected]~]# lvscan                               //扫描逻辑卷

[[email protected]~]# lvdisplay                            //显示逻辑卷

[[email protected]~]# lvcreate -L 16G -nlv_mbox vg_data    //创建指定大小和名称

的逻辑卷

Logical volume "lv_mbox" created

ACTIVE            ‘/dev/vg_data/lv_mbox‘ [16.00 GB]inherit

--- Logical volume ---

LV Name                /dev/vg_data/lv_mbox

VG Name                vg_data

LV UUID               fB0Kr6-r03Z-YuNu-Kq75-uEdY-D4oW-OluAGl

LV Write Access        read/write

标签：系统

原文：http://vmware51.blog.51cto.com/9851770/1605427