linux系统中扩展一个逻辑卷,Linux 创建及扩展逻辑卷
標簽：系統
實驗01????創建邏輯卷
實驗目標
從兩塊磁盤上各取10GB組成20GB的卷組
從卷組中劃分一個16GB的邏輯卷
將此邏輯卷格式化并掛載到/mbox
實驗步驟
一、為新添加的兩塊硬盤分區
[[email?protected] ~]# fdisk -l | grep LVM ? ? ? ? ??//查看標記為LVM的分區
/dev/sdb1 ? ? ? ?1 ? ? ?1217????9775521?? 8e? Linux LVM
/dev/sdc1 ? ? ? ?1 ? ? ?1217????9775521?? 8e? Linux LVM
二、創建物理卷pvcreate 分區 分區
[[email?protected]~]# pvscan ? ? ? ? ? ? ? ? ? ? ? ??//掃描物理卷
No matching physical volumes found
[[email?protected]~]# pvdisplay ? ? ? ? ? ? ? ? ? ???//顯示物理卷
[[email?protected]~]# pvcreate /dev/sdb1 /dev/sdc1 ??//創建物理卷
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、創建卷組vgcreate 卷組名 分區 分區
[[email?protected]~]# vgscan ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?//掃描卷組
Reading all physical volumes.? This may take a while...
No volume groups found
[[email?protected]~]# vgdisplay ? ? ? ? ? ? ? ? ? ? ? ? ? ??? //顯示卷組
No volume groups found
[[email?protected]~]# vgcreate vg_data /dev/sd{b,c}1 ? ? ? ?//創建指定名稱的卷組
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、創建邏輯卷lvcreate -L 大小 -n 邏輯卷名 卷組名
[[email?protected]~]# lvscan ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??//掃描邏輯卷
[[email?protected]~]# lvdisplay ? ? ? ? ? ? ? ? ? ? ? ? ???//顯示邏輯卷
[[email?protected]~]# lvcreate -L 16G -nlv_mbox vg_data ? ?//創建指定大小和名稱
的邏輯卷
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
標簽：系統
原文：http://vmware51.blog.51cto.com/9851770/1605427
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