LINUX 扩展逻辑卷

LINUX 逻辑卷管理

一、添加逻辑卷
[root@OAdata VolGroup00]#fdisk /dev/sdc
n
p 
t
8e

[root@OAdata VolGroup00]#pvcreate /dev/sdc1
[root@OAdata VolGroup00]#pvdisplay

[root@OAdata VolGroup00]#vgcreate vg0 /dev/sdc1
[root@OAdata VolGroup00]#vgdisplay
[root@OAdata VolGroup00]#lvcreate -L 49G -n lv0 vg0

[root@OAdata VolGroup00]#mkfs.ext4 /dev/vg0/lv0

[root@OAdata VolGroup00]#mount /dev/vg0/lv0 /u01/
[root@OAdata VolGroup00]#vi /etc/fstab
                         /dev/vg0/lv0            /u01                    ext4    defaults        0 0 

二、扩展逻辑卷

格式化分区，并修改为8e类型：
fdisk /dev/sdb
n
p
t
8e
w

三、创建物理卷

[root@OAdata VolGroup00]#pvcreate /dev/sdb1
[root@OAdata VolGroup00]# vgextend /dev/VolGroup00 /dev/sdb1
Volume group “VolGroup00″ successfully extended

四、扩展逻辑卷

[root@OAdata VolGroup00]# lvextend -L +249.00GB /dev/mapper/VolGroup00-LogVol00
Extending logical volume LogVol00 to 308.12 GB
Logical volume LogVol00 successfully resized

五、调整卷大小

[root@OAdata VolGroup00]# resize2fs /dev/mapper/VolGroup00-LogVol00
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/VolGroup00-LogVol00 is mounted on /; on-line
resizing required
Performing an on-line resize of /dev/mapper/VolGroup00-LogVol00 to 80773120
(4k) blocks.
The filesystem on /dev/mapper/VolGroup00-LogVol00 is now 80773120 blocks
long.

六、查看调整后的分区

[root@OAdata VolGroup00]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
299G 3.5G 280G 2% /
/dev/sda1 99M 13M 82M 14% /boot
tmpfs 187M 0 187M 0% /dev/shm