AIX - LVM - Change File System

AIX - LVM - Change File System

Using chfs command we can rename and increase the size of the file system online

We want to increase file system size

#chfs –a size=+block size /filesystem name
#chfs –a size=+32m /filesystem name
#chfs-a size=+4g /filesystem name

+block size – We can mention the size using blocks (2048 blocks = 1MB)
+32m – We can mention the size using MB
+4g – We can mention the size using GB


After increasing the file system size, we can verify using commands

#df –k
#ls –q /newfs

Rename the file system using chfs command

#lsfs /newfs
It will display /newfs details
#

Now we want to rename /newfs to /testfs then your command will be

#chfs –m /testfs /newfs

After executing the above command /newfs renamed as /testfs

We can auto mount the file system while booting using chfs command

#chfs –A /testfs

AIX - LVM - Create File System

Create FS

Using crfs command we can create a file system. File systems belongs to LV’s

Whenever we create the file system we should mention the LV name

#crfs –v jfs2 –d testlv –m /newfs (Normal creation)

The /newfs file system created on testlv.

#crfs –v jfs2 –g testvg –a size=64465 –m /newfs (Directly we can create /fs from VG
This case lv name will be lv00 or lv01 like this after that also we can rename the lv name)


IBM - AIX - List File System

We can list file system details using lsfs command

#lsfs – List all filesystems in the /etc/filesystems entry

#lsfs –q (List all filesystems with detailed info)

#lsfs –a (list all filesystems (default)

#lsfs –l (specify the output in the list format)

#lsfs –c (specify the output in the column format)

#lsfs –v jfs (List all jfs filesystems)

AIX - LVM - Mount File System
After creating the file system, we should mount the file system, without file system mount we cannot access the file system using mount command we can mount the file system.

Before mount lsfs command is wont display the /newfs file system

#lsfs –a

That /newfs file system detail is not available

#mount /newfs

Now you execute lsfs command, it will show the /newfs details

#lsfs –a