Ext2resize is a tool that can increase/decrease the ext2/ext3 file system. There are two commands after installation: ext2resize and ext2online, ext2resize.

You must unmount the file system before you can use it. Ext2online can reset the file system size online.

The following is a demonstration of the specific operation. This is the test server we developed. Because there is not enough space, we need to expand the space online now.

First of all, ext2resize

[root @ SVR-d b-test ~]# wget FTP://FTP . pbone . net/mirror/FTP 5 . gwdg . de/pub/opensuse/repositories/home:/janptitan/SLE _ 10/x86 _ 64/ ext 2 resize- 1. 1. 19-3. 1.x86 _ 64 . rpm

2. install ext2resize

[root @ SVR-d b-test ~]# rpm-IVH ext 2 resize- 1. 1. 19-3. 1 . x86 _ 64 . rpm

3. Create a physical volume PV

[root @ SVR-d b-test ~]# pvcreate/dev/sdb 1

4. Add the added pv to the volume group to be expanded (VolGroup_ID_20886).

[root @ SVR-d b-test ~]# vgextend vol group _ ID _ 20886/dev/sdb 1

5. Check the space usage of the existing system.

[root@svr-db-test ~]# df -h

File system? Capacity? Used Available Used% Mount Point

/dev/mapper/vol group _ ID _ 20886-logvol 1

3.9G？ 2.2G？ 1.6G？ 60% /

/dev/sda3 190M？ 26M？ 156M？ 14%/ boot

tmpfs 3.9G 0？ 3.9G？ 0% /dev/shm

/dev/mapper/vol group _ ID _ 20886-log vol 2

3.9G？ 137M？ 3.6G？ 4% /tmp

/dev/mapper/vol group _ ID _ 20886-log vol 5

24G？ 3.4G？ 19G？ 16%/ USA

/dev/mapper/vol group _ ID _ 20886-log vol 4

3.9G？ 2. 1G？ 1.7G？ 57% /var

/dev/mapper/vol group _ ID _ 20886-LogVolHome

95G？ 8 1G？ 9.4G？ 90%/ home

6. Increase the space of logical volume (/dev/volgroup _ ID _ 20886/logvolhome).

[root @ SVR-d b-test ~]# lvextend-L+20000m/dev/vol group _ ID _ 20886/LogVolHome

Expand the logical volume LogVolHome to 1 15.50 GB.

The logical volume LogVolHome was successfully resized.

You have new mail in /var/spool/mail/root.

7. Online file system extension/home directory

[root @ SVR-d b-test ~]# ext 2 online/dev/vol group _ ID _ 20886/LogVolHome

For EXT2FS 0.5b, ext2online v1.1.18-20065438+0/03/18.

8. Check the disk space after online expansion.

[root@svr-db-test ~]# df -h

File system? Capacity? Used Available Used% Mount Point

/dev/mapper/vol group _ ID _ 20886-logvol 1

3.9G？ 2.2G？ 1.6G？ 60% /

/dev/sda3 190M？ 26M？ 156M？ 14%/ boot

tmpfs 3.9G 0？ 3.9G？ 0% /dev/shm

/dev/mapper/vol group _ ID _ 20886-log vol 2

3.9G？ 137M？ 3.6G？ 4% /tmp

/dev/mapper/vol group _ ID _ 20886-log vol 5

24G？ 3.4G？ 19G？ 16%/ USA

/dev/mapper/vol group _ ID _ 20886-log vol 4

3.9G？ 2. 1G？ 1.7G？ 57% /var

/dev/mapper/vol group _ ID _ 20886-LogVolHome

1 14G？ 8 1G？ 28G？ 75%/ home

[root@svr-db-test ~]#

9.？ /home's space has been changed? 9.4 grams to 28 grams

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