1.查看现有的硬盘分区(如今空间没有变大) #df -h 2.对新增的硬盘空间作新增分区(硬盘数没有增长,增长的是空间) #fdisk /dev/sda The number of cylinders for this disk is set to 7832. 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 说明:新增分区 Command action e extended p primary partition (1-4) p Partition number (1-4): 3 说明:新增分区号(1,2默认已经用了) First cylinder (2611-7832, default 2611): 默认回车(最小) Using default value 2611 Last cylinder or +size or +sizeM or +sizeK (2611-7832, default 7832):默认回车(最大) Using default value 7832 Command (m for help): t 说明:修改分区类型 Partition number (1-4): 3 说明:修改分区类型对应的分区号 Hex code (type L to list codes): 8e 说明:8e是lvm磁盘类型 Changed system type of partition 3 to 8e (Linux LVM) Command (m for help): p 说明:打印分区表 Disk /dev/sda: 64.4 GB, 64424509440 bytes 255 heads, 63 sectors/track, 7832 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 2610 20860402+ 8e Linux LVM /dev/sda3 2611 7832 41945715 8e Linux LVM Command (m for help): w 说明:保存退出 The partition table has been altered! 3.重启系统 #reboot 4.查看硬盘状况(核对刚才所作的分区操做是否保存成功) #fdisk -l 5.查看当前分区的类型 #df -T /dev/sda1 说明:查看当前的主分区类型 6.建立文件系统在新的磁盘上 #mkfs.ext4 /dev/sda3 说明:ext4为你查看到的文件系统类型(ext二、ext三、ext4等) 7.建立PV(pv组成vg,vg组成lv) #pvcreate /dev/sda3 查看pv状态 #pvdisplay 查看vg状态 #vgdisplay 8.刚建立的PV加入相应的VG #vgextend vg_centos /dev/sda3 说明:vg_centos是个人服务器vg名称,请经过查看vg状态获得名称VG name 9.查看LV状态,把VG加入到LV #lvdisplay 10.lvextend -l +2559 /dev/VolGroup00/LogVol00 说明:2559为上面pvdisplay查看到的free的PE数量 11.用 resize2fs 调整文件系统大小 resize2fs /dev/mapper/VolGroup00-LogVol00
VolGroup00-LogVol00 看具体状况