星外默认centos系统的硬盘是10g,当开通硬盘大于10g的时候就需要,开通后手动的挂载
##本文中红色部分为命令,蓝色部分为解释或是提示##
- [root@localhost ~]# fdisk -l
- Disk /dev/hda: 21.4 GB, 21474836480 bytes
- 255 heads, 63 sectors/track, 2610 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/hda1 * 1 13 104391 83 Linux
- /dev/hda2 14 1305 10377990 8e Linux LVM
- [root@localhost ~]# df -h
- 文件系统 容量 已用 可用 已用% 挂载点
- /dev/mapper/VolGroup00-LogVol00
- 7.7G 1.9G 5.4G 27% /
- /dev/hda1 99M 22M 73M 23% /boot
- tmpfs 252M 0 252M 0% /dev/shm
如上所示/dev/dha硬盘总大小是21G,实际VolGroup00-LogVol00只有7.7G的空间
下面的步骤就是把剩余的空闲硬盘都增加到VolGroup00-LogVol00逻辑卷中
1.使用fdisk创建LVM分区
fdisk /dev/hda
- [root@localhost ~]# fdisk /dev/hda
- The number of cylinders for this disk is set to 2610.
- There is nothing wrong with that, but this is larger than 1024,
- and could in certain setups cause problems with:
- 1) software that runs at boot time (e.g., old versions of LILO)
- 2) booting and partitioning software from other OSs
- (e.g., DOS FDISK, OS/2 FDISK)
- Command (m for help): n
- Command action
- e extended
- p primary partition (1-4)
- p
- Partition number (1-4): 3
- First cylinder (1306-2610, default 1306):
- Using default value 1306
- Last cylinder or +size or +sizeM or +sizeK (1306-2610, default 2610):
- Using default value 2610
输入n增加分区
输入p类型设置为:主分区
输入3分区编号设置为3
回车 为默认大小
回车 为默认 大小
然后再设置分区的类型
- Command (m for help): t
- Partition number (1-4): 3
- Hex code (type L to list codes): 8e
- Changed system type of partition 3 to 8e (Linux LVM)
输入t 设置分区类型
输入3 3号分区
输入8e 设置为LVM
- Command (m for help): p
- Disk /dev/hda: 21.4 GB, 21474836480 bytes
- 255 heads, 63 sectors/track, 2610 cylinders
- Units = cylinders of 16065 * 512 = 8225280 bytes
- Device Boot Start End Blocks Id System
- /dev/hda1 * 1 13 104391 83 Linux
- /dev/hda2 14 1305 10377990 8e Linux LVM
- /dev/hda3 1306 2610 10482412+ 8e Linux LVM
输入p 打印分区表 (可以看到刚刚创建的/dev/hda3)
- Command (m for help): v
- 13452 unalcate.html' target='_blank'>located sectors
- Command (m for help): w
- The partition table has been altered!
- Calling ioctl() to re-read partition table.
- WARNING: Re-reading the partition table failed with error 16: 设备或资源忙.