一.VirtualBox使用VBoxManage新增硬盘空间

1.1使用VBoxManage

结果发现 Resize medium operation for this format is not implemented yet ,不支持vmdk格式的直接扩容.


E:\Program Files\Oracle\VirtualBox>VBoxManage.exe modifyhd  3fd58d10-4452-44f9-872e-8b9d7d7e59d5 --resize 40000
0%...
Progress state: VBOX_E_NOT_SUPPORTED
VBoxManage.exe: error: Resize medium operation for this format is not implemented yet!

1.2 vmdk转vdi

好吧，先转vdi再来扩容.

克隆vmdk格式硬盘为vdi格式硬盘.

E:\Program Files\Oracle\VirtualBox>VBoxManage.exe clonehd "E:\vm\centos1.vmdk" "E:\vm\centos1.vdi" --format vdi
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Clone medium created in format 'vdi'. UUID: 96c09f76-0bf9-4d3f-9570-25e874c09aed

1.3查看新的vdi盘的。

记住新的vdi盘的uuid 值，后面需要用到.


E:\Program Files\Oracle\VirtualBox>VBoxManage.exe list hdds
UUID:           3fd58d10-4452-44f9-872e-8b9d7d7e59d5
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       E:\vm\centos1.vmdk
Storage format: VMDK
Capacity:       8192 MBytes
Encryption:     disabled

UUID:           96c09f76-0bf9-4d3f-9570-25e874c09aed
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       E:\vm\centos1.vdi
Storage format: vdi
Capacity:       8192 MBytes
Encryption:     disabled

1.4 使用VBoxManage 再次扩容新的vdi盘大小为40G.

E:\Program Files\Oracle\VirtualBox>VBoxManage.exe modifyhd   96c09f76-0bf9-4d3f-9570-25e874c09aed  --resize 40960
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

修改virtualBox虚拟机硬盘，加载新的扩容后的vdi格式的硬盘

1.5 在虚拟机的Centos中使用gparted格式化新加的空间

发现多出32G的新空间，需要先格式化后再使用

二.Centos 目录扩容，直接扩展新添加的硬盘至已有位置

2.1 在系统众使用 fdisk查看文件系统情况

新加的/dev/sda3 磁盘空间已添加成功。

[root@localhost ~]# fdisk -l

Disk /dev/sda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0009b69b

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200    16777215     7339008   8e  Linux LVM
/dev/sda3        16777216    83886079    33554432   83  Linux

使用df -h查看，发现文件目录大小没变，还是8G 。

[root@localhost ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root  6.2G  6.2G  5.5M 100% /
devtmpfs                 1.2G     0  1.2G   0% /dev
tmpfs                    1.2G     0  1.2G   0% /dev/shm
tmpfs                    1.2G  8.5M  1.2G   1% /run
tmpfs                    1.2G     0  1.2G   0% /sys/fs/cgroup
/dev/sda1               1014M  170M  845M  17% /boot
tmpfs                    229M  8.0K  229M   1% /run/user/0

2.2 扩容物理卷

下面开始centos目录扩容，合并新添加的/dev/sda3 至原有系统目录 /centos-root

使用vgscan 及 gextend命令.

[root@localhost ~]# vgscan
  Reading volume groups from cache.
  Found volume group "centos" using metadata type lvm2

//查看 lvm名称-》centos

[root@localhost ~]# vgextend centos /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.
  Volume group "centos" successfully extended

2.3 扩容逻辑卷

使用 lvextend命令记录扩容逻辑卷.

lvextend -L ，32G, 比实际的小一点点，扩容31G。

root@localhost ~]# lvextend -L +32G /dev/mapper/centos-root 
  Insufficient free space: 8192 extents needed, but only 8191 available
[root@localhost ~]# lvextend -L +31G /dev/mapper/centos-root 
  Size of logical volume centos/root changed from <6.20 GiB (1586 extents) to <37.20 GiB (9522 extents).
  Logical volume centos/root successfully resized.

2.4 .更新xfs文件系统

使用df命令查看文件系统，发现 /目录依然没有变化，需要更新xfs文件系统.

[root@localhost ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root  6.2G  6.2G  5.5M 100% /
devtmpfs                 1.2G     0  1.2G   0% /dev
tmpfs                    1.2G     0  1.2G   0% /dev/shm
tmpfs                    1.2G  8.5M  1.2G   1% /run
tmpfs                    1.2G     0  1.2G   0% /sys/fs/cgroup
/dev/sda1               1014M  170M  845M  17% /boot
tmpfs                    229M  8.0K  229M   1% /run/user/0

最后一步，使用 xfs_growfs

[root@localhost ~]# xfs_growfs /dev/mapper/centos-root 
meta-data=/dev/mapper/centos-root isize=512    agcount=4, agsize=406016 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=1624064, 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 1624064 to 9750528

命令成功后再次查看

[root@localhost ~]# 
[root@localhost ~]# df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   38G  6.2G   32G  17% /
devtmpfs                 1.2G     0  1.2G   0% /dev
tmpfs                    1.2G     0  1.2G   0% /dev/shm
tmpfs                    1.2G  8.5M  1.2G   1% /run
tmpfs                    1.2G     0  1.2G   0% /sys/fs/cgroup
/dev/sda1               1014M  170M  845M  17% /boot
tmpfs                    229M  8.0K  229M   1% /run/user/0

OK!, /目录成功扩容32G!

2018-07-14 22:56:51

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