AIX – Increase FS size

The following is the procedure which can be used to configure a LUN which is allocated from SAN
and use it to increase the filesystem space .

Please use your own discretion, I will not be held responsible for any issues caused by trying out the commands given below

this command to find the VG name

lslv <lv-name>

This command can be used to find the free PPs available in the VG

lsvg <vg-name>

This command can be used to find LUNs which are not associated with any VG

lspv | grep -i none

If no free LUNs are available or if lsvg <vg-name> does not have the required space , its time to add LUNs to your system, once the LUNs are added

This command can be used to bring the storage into the system ( like Solaris devfsadm -Cv)

cfgmgr -v

This shows you the newly added LUNs

lspv | grep -i none

Add the new LUN to the required VG , the “-f” option may need to be used if this LUN was previously assigned to some other server and was part of a VG

extendvg <vg-name> <new-LUN>

check if the required space is available

lsvg <vg-name>

This command can be used to increase the filesystem space

chfs -a size=+<space-required>G <mount-point>

eg: This command will add 2G more to the filesystem on the mountpoint

chfs -a size=+2G /mount-point

Note :

There is a very good chance that you might see an error like this

0516-787 extendlv: Maximum allocation for logical volume<lv-name> is 1024 (or some number)

In case of an error like that, the LPs of a particular LV can be increased using the chlv command

chlv -x 2048 <lv-name>

where 2048= 1024 (existing) + 1024 (new)

Intro

I am an infrastructure consultant working with a MNC in Bangalore, India. My area of focus is the support of Datacenter infrastructure which includes system, network and security administration.

This blog is intended to be a central location to hold resources/links which I find useful and a quick reminder to stuff which I always tend to forget

So HELLO WORLD!

Btw, what is written here is my personal opinion on stuff and does not reflect the views of anybody else which includes among others the company which I work for, my family or my friends.