在linux使用ext2resize在线扩展文件系统

墨蓝 2022-01-13 15:45 254阅读 0赞

一个做Oracle的工程师，笔记本上居然没有一套Oracle环境，说起来还真搞笑。今天要帮老婆倒腾一些数据，没办法，只好先装一套Oracle。在笔记本上已经有一个linux的虚拟机，本来是装DB2的，懒得再重装OS了，打算就在里面装Oracle。

整个系统就一个文件系统，再装完11g软件后，准备建库时发现没有空间了，数据库就装在根目录下，于是打算给根卷划一些空间，然后在线扩展文件系统。

这次准备用ext2resize工具在线扩展文件系统。

### 环境：  ###

\[root@cheneydb2 ~\]\# uname -a  
Linux cheneydb2 2.6.18-194.el5 \#1 SMP Tue Mar 16 21:52:39 EDT 2010 x86\_64 x86\_64 x86\_64 GNU/Linux

\[root@cheneydb2 ~\]\# cat /etc/redhat-release  
Red Hat Enterprise Linux Server release 5.5 (Tikanga)

### 工具下载路径： ###

[ftp://ftp.pbone.net/mirror/ftp5.gwdg.de/pub/opensuse/repositories/home:/janptitan/SLE\_10/x86\_64/ext2resize-1.1.19-3.1.x86\_64.rpm][ftp_ftp.pbone.net_mirror_ftp5.gwdg.de_pub_opensuse_repositories_home_janptitan_SLE_10_x86_64_ext2resize-1.1.19-3.1.x86_64.rpm]

### 划盘： ###

\[root@cheneydb2 ~\]\# **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 13 104391 83 Linux  
/dev/sda2 14 1958 15623212+ 8e Linux LVM  
  
**Disk /dev/sdb: 5368 MB, 5368709120 bytes**  
**255 heads, 63 sectors/track, 652 cylinders  
Units = cylinders of 16065 \* 512 = 8225280 bytes**

### 磁盘分区：    ###

\[root@cheneydb2 ~\]\# **fdisk /dev/sdb**   
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel  
Building a new DOS disklabel. Changes will remain in memory only,  
until you decide to write them. After that, of course, the previous  
content won't be recoverable.  
  
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)  
  
Command (m for help): h  
h: unknown command  
Command action  
a toggle a bootable flag  
b edit bsd disklabel  
c toggle the dos compatibility flag  
d delete a partition  
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)  
  
Command (m for help):**n**  
Command action  
e extended  
p primary partition (1-4)  
**p**  
Partition number (1-4): **1**  
First cylinder (1-652, default 1):  
Using default value 1  
Last cylinder or +size or +sizeM or +sizeK (1-652, default 652):  
Using default value 652  
  
Command (m for help): **w**  
The partition table has been altered!  
  
Calling ioctl() to re-read partition table.  
Syncing disks.

\[root@cheneydb2 ~\]\# **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 13 104391 83 Linux  
/dev/sda2 14 1958 15623212+ 8e Linux LVM  
  
Disk /dev/sdb: 5368 MB, 5368709120 bytes  
255 heads, 63 sectors/track, 652 cylinders  
Units = cylinders of 16065 \* 512 = 8225280 bytes  
  
Device Boot Start End Blocks Id System  
**/dev/sdb1 1 652 5237158+ 83 Linux**

### 创建PV:    ###

\[root@cheneydb2 ~\]\# **pvcreate /dev/sdb1**  
Physical volume "/dev/sdb1" successfully created

### VG扩容：    ###

\[root@cheneydb2 ~\]\# **vgdisplay**  
/dev/hdc: open failed: No medium found  
\--- Volume group ---  
VG Name VolGroup00  
System ID  
Format lvm2  
Metadata Areas 1  
Metadata Sequence No 3  
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 14.88 GB**  
PE Size 32.00 MB  
Total PE 476  
Alloc PE / Size 476 / 14.88 GB  
Free PE / Size 0 / 0  
VG UUID 3RQ6rK-WGtT-3eIv-0KBt-bimt-CS2A-WmAOei

\[root@cheneydb2 ~\]\# **vgextend VolGroup00 /dev/sdb1**  
/dev/hdc: open failed: No medium found  
Volume group "VolGroup00" successfully extended

\[root@cheneydb2 ~\]\# vgdisplay VolGroup00  
/dev/hdc: open failed: No medium found  
\--- Volume group ---  
VG Name VolGroup00  
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 19.84 GB**  
PE Size 32.00 MB  
Total PE 635  
Alloc PE / Size 476 / 14.88 GB  
Free PE / Size 159 / 4.97 GB  
VG UUID 3RQ6rK-WGtT-3eIv-0KBt-bimt-CS2A-WmAOei

### 扩展LV:    ###

\[root@cheneydb2 ~\]\# **lvdisplay /dev/VolGroup00/LogVol00**  
/dev/hdc: open failed: No medium found  
\--- Logical volume ---  
LV Name /dev/VolGroup00/LogVol00  
VG Name VolGroup00  
LV UUID 5OkZew-3rlV-4KyR-tf8A-djM5-mXd2-fhfU7o  
LV Write Access read/write  
LV Status available  
\# open 1  
 **LV Size 12.91 GB**  
Current LE 413  
Segments 1  
Allocation inherit  
Read ahead sectors auto  
\- currently set to 256  
Block device 253:0

\[root@cheneydb2 ~\]\# **lvextend -L 16g /dev/VolGroup00/LogVol00**  
/dev/hdc: open failed: No medium found  
Extending logical volume LogVol00 to 16.00 GB  
Logical volume LogVol00 successfully resized

\[root@cheneydb2 ~\]\# lvdisplay /dev/VolGroup00/LogVol00  
/dev/hdc: open failed: No medium found  
\--- Logical volume ---  
LV Name /dev/VolGroup00/LogVol00  
VG Name VolGroup00  
LV UUID 5OkZew-3rlV-4KyR-tf8A-djM5-mXd2-fhfU7o  
LV Write Access read/write  
LV Status available  
\# open 1  
 **LV Size 16.00 GB**  
Current LE 512  
Segments 2  
Allocation inherit  
Read ahead sectors auto  
\- currently set to 256  
Block device 253:0

### 安装ext2resize工具：    ###

\[root@cheneydb2 rpm\]\#  **rpm -ivh ext2resize-1.1.19-3.1.x86\_64.rpm**   
Preparing... \#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\# \[100%\]  
1:ext2resize warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root%)  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root%)  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root%)  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root%)  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root%)  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\#\# \[100%\]  
warning: user abuild does not exist - using root  
warning: group abuild does not exist - using root  
\[root@cheneydb2 rpm\]\# ext  
ext2online ext2resize extend\_dmalloc extlinux extractrc  
ext2prepare extcheck extensionproxy extractattr

安装过程中有warning信息，应该不会有影响。

###  ###

### 在线扩展文件系统：    ###

\[root@cheneydb2 ~\]\# df -h  
Filesystem Size Used Avail Use% Mounted on  
**/dev/mapper/VolGroup00-LogVol00  
13G 12G 249M 98% /**  
/dev/sda1 99M 13M 82M 14% /boot  
tmpfs 1006M 0 1006M 0% /dev/shm  
.host:/ 98G 94G 4.1G 96% /mnt/hgfs  
  
\[root@cheneydb2 rpm\]\# **ext2online /dev/VolGroup00/LogVol00**  
ext2online v1.1.18 - 2001/03/18 for EXT2FS 0.5b  
  
  
\[root@cheneydb2 rpm\]\# df -h  
Filesystem Size Used Avail Use% Mounted on  
**/dev/mapper/VolGroup00-LogVol00  
16G 12G 3.1G 80% /**  
/dev/sda1 99M 13M 82M 14% /boot  
tmpfs 1006M 0 1006M 0% /dev/shm  
.host:/ 98G 94G 4.1G 96% /mnt/hgfs

搞定！这个工具不错，现在有空间建库了。

转载于:https://blog.51cto.com/cheneyyu/943937

[ftp_ftp.pbone.net_mirror_ftp5.gwdg.de_pub_opensuse_repositories_home_janptitan_SLE_10_x86_64_ext2resize-1.1.19-3.1.x86_64.rpm]: ftp://ftp.pbone.net/mirror/ftp5.gwdg.de/pub/opensuse/repositories/home:/janptitan/SLE_10/x86_64/ext2resize-1.1.19-3.1.x86_64.rpm