How to increase space /dev/hd4?

UNIX AIX
1

A check disk space and find /dev/hd4 used 99%. How to increase space. Thank you for advice.

/home/tecsys > df 
Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
/dev/hd4         1048576     20624   99%     5977    68% /
/dev/hd2         6815744    653032   91%    59194    44% /usr
/dev/hd9var       524288    109936   80%     5638    31% /var
/dev/hd3          524288    504808    4%      632     2% /tmp
/dev/fwdump      1572864   1558232    1%       25     1% /var/adm/ras/platform
/dev/hd1         3145728    622848   81%    14771    18% /home
/proc                  -         -    -         -     -  /proc
/dev/hd10opt      524288    279096   47%     3568    11% /opt
/dev/lv00        2097152   1345240   36%      683     1% /home/tecsys/hold
/dev/lv01        2621440   2539072    4%       16     1% /home/tecsys/Bhome/tecs
ys/yhi
/dev/lv02       62390272  29611016   53%     1826     1% /usr/master/yhi
/dev/lv03       15204352   7513968   51%     1908     1% /usr/master/hold
/dev/lv04        4194304    938408   78%      971     1% /usr/master/ft
2

If you have space in rootvg:

chfs -a size=+1G /

(where 1G = pick a size)

Otherwise, add a new disk, or reduce some of the other FS sizes.

If you need to add extents to the LV first, use the chlv command.

3

Absolutely correct, but the problem itself begs the question: why is the space in "/" exhausted? Under normal circumstances this can't happen in an AIX system, so there must have gone something awry before.

It might be this problem, which caused the full "/".

I hope this helps.

bakunin

1 Like
4

If you need help chasing down files in / I usually use:

du -ks * | sort -n

The largest files/directories will be at the bottom

5

Just thought I would mention the "iconic" extension of a file system is

chfs -a size+=1 FileSystemName

In other words, you are required to increase everything by at least 1PP - you can supply any number (e.g., +7890) and AIX will compute the number of PP (physical partitions) needed to complete the increase - as long as space is available.

1 Like