[原]使用cdlinux扩展lvm管理的根分区

下载cdlinux,CDlinux-0.9.6_CE.iso, 地址http://cdlinux.info/wiki/doku.php/zh/download/latest先看操作系统的情况:

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关机。

修改虚拟机硬盘大小,由60GB改成80GB:

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设置使用 CDlinux-0.9.6_CE.iso 启动:

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启动系统:

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查看一下磁盘的状态:

bash# fdisk -l 

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可以看到磁盘的确扩张了

为扩展出来的空间分区:

bash# fdisk /dev/sda 

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再看看现在的分区情况:

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重启,再次使用cdlinux启动。

 

现在开始进入正题了:

先去掉烦人的sudo:

bash$ sudo su -

看一下现在vg和pv的简要信息:

bash# vgs
  VG         #PV #LV #SN Attr   VSize  VFree 
  VolGroup00   2   2   0 wz--n- 59.88g 32.00m
bash# pvs
  PV         VG         Fmt  Attr PSize  PFree 
  /dev/sda2  VolGroup00 lvm2 a-   39.88g     0 
  /dev/sda3  VolGroup00 lvm2 a-   20.00g 32.00m

将刚才准备好的新partition创建成pv,在看看pv的简要信息:

bash# pvcreate /dev/sda4 
  Physical volume "/dev/sda4" successfully created
bash# pvs
  PV         VG         Fmt  Attr PSize  PFree 
  /dev/sda2  VolGroup00 lvm2 a-   39.88g     0 
  /dev/sda3  VolGroup00 lvm2 a-   20.00g 32.00m
  /dev/sda4             lvm2 a-   20.00g 20.00g

将pv加入vg中:

bash# vgextend VolGroup00 /dev/sda4
  Volume group "VolGroup00" successfully extended
bash# pvs
  PV         VG         Fmt  Attr PSize  PFree 
  /dev/sda2  VolGroup00 lvm2 a-   39.88g     0 
  /dev/sda3  VolGroup00 lvm2 a-   20.00g 32.00m
  /dev/sda4  VolGroup00 lvm2 a-   20.00g 20.00g

激活vg,并扩大lv:

bash# vgchange -ay 
  2 logical volume(s) in volume group "VolGroup00" now active
bash# lvextend -L+20G /dev/VolGroup00/LogVol00 
  Extending logical volume LogVol00 to 74.03 GiB
  Logical volume LogVol00 successfully resized

检查一下扩大后的lv:

bash# e2fsck -f /dev/VolGroup00/LogVol00 
e2fsck 1.41.11 (14-Mar-2010)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/VolGroup00/LogVol00: 340971/7080416 files (1.0% non-contiguous), 2264624/14163968 blocks

最后扩充lv上的文件系统:

bash# resize2fs /dev/VolGroup00/LogVol00
resize2fs 1.41.11 (14-Mar-2010)
Resizing the filesystem on /dev/VolGroup00/LogVol00 to 19406848 (4k) blocks.
The filesystem on /dev/VolGroup00/LogVol00 is now 19406848 blocks long.

 

重启系统,这次不用cdlnux启动了:

看看现在磁盘状况:

image 自此,完成扩展 Linux 根分区。

posted @ 2010-07-22 17:17  killkill  阅读(3043)  评论(0编辑  收藏  举报