首先在virtualBox 介质中增加容量
登录虚拟机终端
在/dev/sda上创建新分区
[root@localhost ~]# fdisk /dev/sda
欢迎使用 fdisk (util-linux 2.23.2)。
更改将停留在内存中，直到您决定将更改写入磁盘。
使用写入命令前请三思。
命令操作
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
命令(输入 m 获取帮助)：n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
分区号 (3,4，默认 3)：
起始 扇区 (33554432-52428799，默认为 33554432)：
将使用默认值 33554432
Last 扇区, +扇区 or +size{K,M,G} (33554432-52428799，默认为 52428799)：
将使用默认值 52428799
分区 3 已设置为 Linux 类型，大小设为 9 GiB
命令(输入 m 获取帮助)：p
磁盘 /dev/sda：26.8 GB, 26843545600 字节，52428800 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x00062e5f
设备 Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 33554431 15727616 8e Linux LVM
/dev/sda3 33554432 52428799 9437184 83 Linux
命令(输入 m 获取帮助)：m
命令操作
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
命令(输入 m 获取帮助)：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.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
正在同步磁盘。
[root@localhost ~]# ll /dev/sda
brw-rw---- 1 root disk 8, 0 9月 14 12:56 /dev/sda
[root@localhost ~]# ll /dev/sda*
brw-rw---- 1 root disk 8, 0 9月 14 12:56 /dev/sda
brw-rw---- 1 root disk 8, 1 9月 14 12:56 /dev/sda1
brw-rw---- 1 root disk 8, 2 9月 14 12:56 /dev/sda2
[root@localhost ~]# partprobe
Warning: 无法以读写方式打开 /dev/sr0 (只读文件系统)。/dev/sr0 已按照只读方式打开。
[root@localhost ~]# ll /dev/sda*
brw-rw---- 1 root disk 8, 0 9月 14 12:57 /dev/sda
brw-rw---- 1 root disk 8, 1 9月 14 12:57 /dev/sda1
brw-rw---- 1 root disk 8, 2 9月 14 12:57 /dev/sda2
brw-rw---- 1 root disk 8, 3 9月 14 12:57 /dev/sda3
格式化新分区 mkfs.ext4 /dev/sda3
[root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 25G 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 15G 0 part
│ ├─centos-root 253:0 0 13.4G 0 lvm /
│ └─centos-swap 253:1 0 1.6G 0 lvm [SWAP]
└─sda3 8:3 0 9G 0 part
sr0 11:0 1 58.3M 0 rom
[root@localhost ~]# mkfs.ext4 /dev/sda3
mke2fs 1.42.9 (28-Dec-2013)
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
589824 inodes, 2359296 blocks
117964 blocks (5.00%) reserved for the super user
第一个数据块=0
Maximum filesystem blocks=2151677952
72 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Allocating group tables: 完成
正在写入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
创建物理卷并添加到卷组。
首先，使用以下命令创建物理卷
[root@localhost ~]# pvcreate /dev/sda3
WARNING: ext4 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sda3.
Physical volume "/dev/sda3" successfully created.
[root@localhost ~]# vgex
vgexport vgextend
[root@localhost ~]# vgextend /dev/sda3
No command with matching syntax recognised. Run 'vgextend --help' for more information.
Correct command syntax is:
vgextend VG PV ...
然后，将新创建的物理卷添加到CentOS卷组（假设卷组名为centos）
[root@localhost ~]# vgextend centos /dev/sda3
Volume group "centos" successfully extended
查看卷组属性，确认新分区已经添加到卷组
[root@localhost ~]# vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 23.99 GiB
PE Size 4.00 MiB
Total PE 6142
Alloc PE / Size 3839 / <15.00 GiB
Free PE / Size 2303 / <9.00 GiB
VG UUID 02SdB1-ICbN-vibe-6RsA-gQWW-kmnn-1qDVs7
将空闲的空间分配给root文件系统。假设我们要将所有空闲空间分配给root文件系统
[root@localhost ~]# lvextend -l +100%FREE /dev/mapper/centos-root
Size of logical volume centos/root changed from 13.39 GiB (3429 extents) to 22.39 GiB (5732 extents).
Logical volume centos/root successfully resized.
更新文件系统以使用新增的空间。对于ext4文件系统
[root@localhost ~]# xfs_growfs /dev/mapper/centos-root
meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize=877824 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=3511296, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 3511296 to 5869568
[root@localhost ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 16K 1.9G 1% /dev/shm
tmpfs 1.9G 8.7M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/mapper/centos-root 23G 13G 11G 55% /
/dev/sda1 1014M 194M 821M 20% /boot
tmpfs 379M 0 379M 0% /run/user/1002
mine 276G 68G 209G 25% /media/sf_mine
wwwgit 276G 68G 209G 25% /media/sf_wwwgit
wwwroot 276G 68G 209G 25% /media/sf_wwwroot
tmpfs 379M 0 379M 0% /run/user/0
