新挂载两块磁盘 各10G
fdisk -l
[root@nagios ~]# fdisk -l
Disk /dev/sda: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 3916 31350847+ 8e Linux LVM
Disk /dev/sdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
fdisk /dev/sdb
n #新建
p #选择分区类型
1 #选择分区号
#回车默认1-1305全部
t #转换分区格式
8e #输入格式
w #保存退出
/dev/sdc
同样的操作
创建物理卷
[root@nagios ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@nagios ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
创建卷组
[root@nagios ~]# vgcreate lvm_name /dev/sdb1 /dev/sdc1
创建逻辑卷
[root@nagios ~]# lvcreate -L 13G -n test lvm_name
Logical volume "test" created
创建ext3系统
[root@nagios ~]# mkfs -t ext3 /dev/lvm_name/test
扩容:
[root@nagios ~]# lvextend -L +5G /dev/lvm_name/test
Extending logical volume test to 18.00 GB
Logical volume test successfully resized
使用resize2fs命令更新系统识别的文件系统大小
[root@nagios ~]# resize2fs /dev/lvm_name/test
挂载使用:
mkdir /mnt/backup
mount /dev/lvm_name/test /mnt/backup/
[root@nagios mnt]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/VolGroup00-LogVol00
28G 2.0G 24G 8% /
/dev/sda1 99M 13M 82M 14% /boot
tmpfs 501M 0 501M 0% /dev/shm
/dev/mapper/lvm_name-test
18G 164M 17G 1% /mnt/backup
设置开机自动挂载
vi /etc/fstab
/dev/lvm_name/test /mnt/backup ext3 defaults 0 0
设置完成。