记录一次Oracle VirtualBox 下 Centos 6.5 VM 磁盘扩容

Posted 2020-10-16

Oracle VirtualBox 创建的 Centos 6.5 VM 默认硬盘大小是8个G（未手工调整），现使用100%，需要扩容。

[[email protected] ~]# df -h
Filesystem                    Size  Used Avail Use% Mounted on
/dev/mapper/vg_kaola-lv_root  6.5G  6.2G   32M 100% /
tmpfs                         939M   76K  939M   1% /dev/shm
/dev/sda1                     477M   59M  393M  14% /boot
cm_processes                  939M     0  939M   0% /var/run/cloudera-scm-agent/process

1. 复制vmdk到vdi

   由于创建VM时选择的磁盘格式是vmdk，先复制磁盘为vdi格式：

   C:\Program Files\Oracle\VirtualBox>
   

   
   

   vboxmanage clonehd "kaola.vmdk" "new-kaola.vdi" --format vdi
   

   修改磁盘为 20G：

   vboxmanage modifyhd "new-kaola.vdi" --resize 20480

   查看磁盘信息：
   

   [[email protected] ~]# fdisk -l
   
   Disk /dev/sda: 21.5 GB, 21474836480 bytes
   255 heads, 63 sectors/track, 2610 cylinders
   Units = cylinders of 16065 * 512 = 8225280 bytes
   Sector size (logical/physical): 512 bytes / 512 bytes
   I/O size (minimum/optimal): 512 bytes / 512 bytes
   Disk identifier: 0x000490ac
   
      Device Boot      Start         End      Blocks   Id  System
   /dev/sda1   *           1          64      512000   83  Linux
   Partition 1 does not end on cylinder boundary.
   /dev/sda2              64        2611    20458496   8e  Linux LVM
   

   
   

2. 下载gparted iso文件，引导vm启动后调整sda2分区；

   调整后：
   

   [[email protected] ~]# fdisk -l
   
   Disk /dev/sda: 21.5 GB, 21474836480 bytes
   255 heads, 63 sectors/track, 2610 cylinders
   Units = cylinders of 16065 * 512 = 8225280 bytes
   Sector size (logical/physical): 512 bytes / 512 bytes
   I/O size (minimum/optimal): 512 bytes / 512 bytes
   Disk identifier: 0x000490ac
   
      Device Boot      Start         End      Blocks   Id  System
   /dev/sda1   *           1          64      512000   83  Linux
   Partition 1 does not end on cylinder boundary.
   /dev/sda2              64        2611    20458496   8e  Linux LVM

   
   

3. 查看PV  VG信息

   [[email protected] mapper]# pvdisplay
     --- Physical volume ---
     PV Name               /dev/sda2
     VG Name               vg_kaola
     PV Size               19.51 GiB / not usable 2.00 MiB
     Allocatable           yes
     PE Size               4.00 MiB
     Total PE              4994
     Free PE               3072
     Allocated PE          1922
     PV UUID               TMCfp1-wTiv-efkN-DfJ4-ZHnO-IGa0-iulNOu
     
   [[email protected] mapper]# vgdisplay
     --- Volume group ---
     VG Name               vg_kaola
     System ID             
     Format                lvm2
     Metadata Areas        1
     Metadata Sequence No  5
     VG Access             read/write
     VG Status             resizable
     MAX LV                0
     Cur LV                2
     Open LV               2
     Max PV                0
     Cur PV                1
     Act PV                1
     VG Size               19.51 GiB
     PE Size               4.00 MiB
     Total PE              4994
     Alloc PE / Size       1922 / 7.51 GiB
     Free  PE / Size       3072 / 12.00 GiB
     VG UUID               JGyRf4-drnG-n5gs-M3No-LCBC-MEHz-OcewI1

   
   

4. 调整LV大小

   Free  PE       3072

   [[email protected] mapper]# lvextend -l +3072 /dev/mapper/vg_kaola-lv_root
     Extending logical volume lv_root to 18.71 GiB
     Logical volume lv_root successfully resized

   
   

5. 调整文件系统大小

   [[email protected] mapper]# resize2fs /dev/mapper/vg_kaola-lv_root
   resize2fs 1.41.12 (17-May-2010)
   Filesystem at /dev/mapper/vg_kaola-lv_root is mounted on /; on-line resizing required
   old desc_blocks = 1, new_desc_blocks = 2
   Performing an on-line resize of /dev/mapper/vg_kaola-lv_root to 4904960 (4k) blocks.
   The filesystem on /dev/mapper/vg_kaola-lv_root is now 4904960 blocks long.

   
   

6. 调整后，现在已用为36%：

   [[email protected] mapper]# df -h
   Filesystem                    Size  Used Avail Use% Mounted on
   /dev/mapper/vg_kaola-lv_root   19G  6.2G   12G  36% /
   tmpfs                         939M  224K  939M   1% /dev/shm
   /dev/sda1                     477M   59M  393M  14% /boot
   cm_processes                  939M     0  939M   0% /var/run/cloudera-scm-agent/process