?創建基于分區的LV

1、?????通過fdisk創建分區，詳細步驟省略，可參考如下:

http://blog.csdn.net/wuweilong/article/details/7538647

http://space.itpub.net/?uid-20674423-action-viewspace-itemid-722812

?

[root@jetsen /]# fdisk /dev/sdc??（n\ p\ 1\ +500m\ w\）--創建了500M分區

[root@jetsen /]# fdisk /dev/sdc??（n\ p\ 1\ +1024m\ w\）--創建了1G分區

?

查看分區信息

[root@jetsen /]# fdisk -l /dev/sdc????????????????----分區已經創建成功

?

Disk /dev/sdc: 536.8 GB, 536870912000 bytes

255 heads, 63 sectors/track, 65270 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

?

??Device Boot?????Start????????End?????Blocks??Id?System

/dev/sdc1??????????????1?????????62?????497983+?83?Linux

/dev/sdc2?????????????63????????187????1004062+?83?Linux

[root@jetsen /]#

?

2、????創建基于分區的物理卷

[root@jetsen /]# pvcreate /dev/sdc1

?Physical volume "/dev/sdc1" successfully created

[root@jetsen /]# pvcreate /dev/sdc2

?Physical volume "/dev/sdc2" successfully created

?

3、????創建卷組：

[root@jetsen /]# vgcreate soft?/dev/sdc1 /dev/sdc2

?/dev/cdrom: open failed: Read-only file system

?/dev/cdrom: open failed: Read-only file system

?Attempt to close device '/dev/cdrom' which is not open.

?Volume group "soft" successfully created

[root@jetsen /]#

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4、????激活卷組

[root@jetsen /]# vgchange -a y soft

?0 logical volume(s) in volume group "soft" now active

[root@jetsen /]#

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5、?????????從卷組中刪除物理卷

[root@jetsen /]# vgreduce soft /dev/sdc2

?Removed "/dev/sdc2" from volume group "soft"

[root@jetsen /]#

?

6、????添加卷組到物理卷

[root@jetsen /]# vgextend soft /dev/sdc2

?/dev/cdrom: open failed: Read-only file system

?Attempt to close device '/dev/cdrom' which is not open.

?Volume group "soft" successfully extended

[root@jetsen /]#

?

7、????創建LV

先查看VG的大小，為1.5G，包含2個PV

[root@jetsen /]# vgdisplay soft

?--- Volume group ---

?VG Name??????????????soft

?System ID????????????

?Format???????????????lvm2

?Metadata Areas???????2

?Metadata Sequence No?3

?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??????????????1.43 GB

?PE Size??????????????4.00 MB

?Total PE?????????????366

?Alloc PE / Size??????0 / 0??

?Free?PE / Size??????366 / 1.43 GB

?VG UUID??????????????D3x6JY-BVIL-C4ld-013H-U2Rq-hb1q-1oOVnx

??

[root@jetsen /]#

將1.5G共366個PE創建一個LV

[root@jetsen /]# lvcreate -l366 soft -n soft01

?Logical volume "soft01" created

[root@jetsen /]#

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8、????創建文件系統：

[root@jetsen /]# mkfs.ext4 /dev/soft/soft01

mke4fs 1.41.5 (23-Apr-2009)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

93696 inodes, 374784 blocks

18739 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=385875968

12 block groups

32768 blocks per group, 32768 fragments per group

7808 inodes per group

Superblock backups stored on blocks:

???????32768, 98304, 163840, 229376, 294912

?

Writing inode tables: done???????????????????????????

Creating journal (8192 blocks): done

Writing superblocks and filesystem accounting information: done

?

This filesystem will be automatically checked every 29 mounts or

180 days, whichever comes first.?Use tune4fs -c or -i to override.

[root@jetsen /]#

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9、????掛載文件系統

[root@jetsen /]# mkdir /soft

[root@jetsen /]# mount /dev/soft/soft01 /soft

[root@jetsen /]# df -h

Filesystem??????????????????????????Size??Used??Avail?Use%?Mounted on

/dev/mapper/VolGroup00-LogVol00?????18G?5.8G??11G??35%??/

/dev/sda1????????????????????????????99M?12M??82M?13%???/boot

tmpfs???????????????????????????????506M?4.0K?506M??1%??/dev/shm

/dev/mapper/soft-soft01??????????????1.5G??35M??1.4G??3%??/soft

轉載于:https://blog.51cto.com/redkey/1066871

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