AIX Free disk space

Hello,

I would like to free some space to install gcc with is about 50M large, and I have no free space on my system. What can I delete?

Filesystem 1024-blocks Used Free %Used Iused Ifree %Iused Mounted on
/dev/hd4 262144 145436 116708 56% 7981 26730 23% /
/dev/hd2 1703936 1617496 86440 95% 36843 22749 62% /usr
/dev/hd9var 131072 44564 86508 34% 518 19442 3% /var
/dev/hd3 131072 15700 115372 12% 149 25745 1% /tmp
/dev/hd1 131072 392 130680 1% 10 29126 1% /home
/dev/hd11admin 131072 74368 56704 57% 59 12733 1% /admin
/proc - - - - - - - /proc
/dev/hd10opt 917504 853452 64052 94% 29813 16484 65% /opt

I would like to remove CDE, how could I do that?

Thank you!

PS: I am using AIX 6.1

Hello,

Usually gcc packages will be installed in /usr. So you can install it as /usr have enough space.

Still you want to increase /usr check for the free PP's in rootvg and you can extend /usr filesystem online.

Excuse me, what are PP's ? How should I do that?

"lsvg rootvg" from this command you can find the Number of free PPs.

Here is the output:

VOLUME GROUP: rootvg VG IDENTIFIER: 00581a4f00004c00000001200e63b00a
VG STATE: active PP SIZE: 128 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 271 (34688 megabytes)
MAX LVs: 256 FREE PPs: 238 (30464 megabytes)
LVs: 11 USED PPs: 33 (4224 megabytes)
OPEN LVs: 9 QUORUM: 2 (Enabled)
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per VG: 32512
MAX PPs per PV: 1016 MAX PVs: 32
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable

There should be 30 Gigs of space and I don't understand where are they.

Think of "PP"s like chunks of space in your volume group. Increases or decreases in the size of your filesystems will occur in your case 128MB at a time. You can't give a filesystem 127MB or 129MB. It will increase or decrease by 128MB because that is your PP size.

It looks like you have 30 gig free.

FREE PPs: 238 (30464 megabytes)

238 PPs * 128MB PP size = 30464 MB free

Run this command to change the size of your /usr filesystem. I have mine sized around 3 gig. This command sets the /usr to 3 gig:

chfs -a size=3G /usr

If you want to want to increase, you can do 128MB (or whatever size you want) increases like this:

chfs -a size=+128M /usr

This just adds 128M to whatever is already there. If you try to increase your /usr by 1MB, it will give it another 128MB because that is your PP size.

Also, to see your filesystem sizes in a format that makes more sense, run "df -Im":

hostname:/:$ df -Im /usr
Filesystem    MB blocks      Used      Free %Used Mounted on
/dev/hd2        3464.00   2263.11   1200.89   66% /usr

Thank you very much, that worked and I have extended my partitions! PS: Do you know a good document where these things are explained?

try chapter 1 in IBM Redbooks | AIX Logical Volume Manager from A to Z: Introduction and Concepts

good luck

IBM Redbooks | AIX Logical Volume Manager from A to Z: Troubleshooting and Commands

Hi,

explains everything you need or need not to know about lvm

Rgds
zxmaus

I recommend you to study this redbook: IBM Redbooks | IBM eServer Certification Study Guide - AIX 5L Problem Determination Tools and Techniques
It's good for the beginning.