Linux的VM虚拟机扩展磁盘空间
(1)vmware软件中编辑虚拟机设置中又扩容的选项,这里不做介绍。
(2)启动VM环境下的linux操作系统,添加新分区,需要root账号身份。
3.1 【fdisk -l】 extend 对应的是sda4,说明新创建的分区将会是sda4
3.2 输入【fdisk /dev/sda】
3.2.2输入命令【n】添加新分区。(这时候可能会报“No free sectors available”,参考最后的解决办法)
3.2.3输入n后直接输入命令【p】创建主分区。
3.2.4输入【回车】,选择默认大小,这样不浪费空间!!
3.2.5输入【回车】。
3.2.6输入【w】,保持修改
3.3 输入【reboot】 重启linux,必须reboot,否则/dev/sda4无法格式化。
3.4 这时在/dev/目录下,才能看到了新的分区比如/dev/sda4
3.5 【mkfs.ext3 /dev/sda4】格式化
3.6 在根目录下创建disk4目录
3.7 【mount /dev/sda4 /disk4/】将分区mount到/disk4/上
3.8 在vim修改/etc/fstab文件,加入【/dev/sda4 /disk4 ext3 defaults 0 0】一行,并保存,实现开机自动mount。
至此,新增加的磁盘空间容量,即可在disk4上体现,并且重新开机自动mount该分区,追加磁盘空间的工作完毕。
附解决办法
Linux扩容时新建分区报错No free sectors available
扩展后执行fdisk -l查看是否成功
[root@localhost ~ ]# fdisk - l
Disk / dev / sda: 16.1 GB, 16106127360 bytes
255 heads, 63 sectors / track, 1958 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/ dev / sda1 * 1 6 48163 + 83 Linux
/ dev / sda2 7 515 4088542 + 83 Linux
/ dev / sda3 516 1239 5815530 83 Linux
/ dev / sda4 1240 1305 530145 5 Extended
/ dev / sda5 1240 1305 530113 + 82 Linux swap / Solaris
可见sda已经扩展成为16G,但是没分配给文件系统
继续执行fdisk /dev/sda进行新建磁盘
[root@localhost ~ ]# fdisk / dev / sda
The number of cylinders for this disk is set to 1958 .
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
No free sectors available
前面执行fdisk -l的时候明明最后才是1305柱面,而且应该有1958柱面,为什么说没有空闲的扇区。
再看看fdisk -l执行结果,原来是/dev/sda5分配了作为swap分区,找到原因了就容易解决!!!!!!!
1.关闭swap分区# swapoff /dev/sda5
2.删除sda4和sda5.
[root@localhost ~ ]# fdisk / dev / sda
The number of cylinders for this disk is set to 1958 .
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): d
Partition number ( 1 - 5 ): 5
Command (m for help): d
Partition number ( 1 - 5 ): 4
3.建立扩展分区4,建立分区sda5,写入
Command (m for help): n
Command action
e extended
p primary partition ( 1 - 4 )
e
Selected partition 4
First cylinder ( 1240 - 1958 , default 1240 ):
Using default value 1240
Last cylinder or + size or + sizeM or + sizeK ( 1240 - 1958 , default 1958 ):
Using default value 1958
Command (m for help): n
First cylinder ( 1240 - 1958 , default 1240 ):
Using default value 1240
Last cylinder or + size or + sizeM or + sizeK ( 1240 - 1958 , default 1958 ):
Using default value 1958
Command (m for help): w
The partition table has been altered !
然后重复执行文章最初的那些内容