By default AIX installs on several very small partitions, they fill up fast.
The good news is, they are easy to extend and no reboot or install media is required. Just use this to see what you have available:
# lspv hdisk0
# lspv hdisk1
Find out which partitions are full using:
# df -k
Filesystem 1024-blocks Free %Used Iused %Iused Mounted on
/dev/hd4 540672 0 100% 1622 1% /
/dev/hd2 2179072 0 100% 29351 6% /usr
/dev/hd9var 540672 0 100% 379 1% /var
/dev/hd3 32768 17188 48% 84 2% /tmp
/dev/hd1 16384 15820 4% 18 1% /home
/proc - - - - - /proc
/dev/hd10opt 65536 11160 83% 856 6% /opt
Extend the partitions using:
# chfs -a size=1000M /dev/hd2 - Sets the size to 1000MB
# chfs -a size=+1G /dev/hd2 - Adds 1Gb to /dev/hd2
# chfs -a size=-1G /dev/hd2 - Removes 1Gb from /dev/hd2
Or set the partition size to a particular size (you can only increase sizes, not reduce):
# chfs -a size=500M /dev/hd4
# chfs -a size=1000M /dev/hd2
# chfs -a size=1000M /dev/hd9var
# chfs -a size=100M /dev/hd3
# chfs -a size=100M /dev/hd1
# chfs -a size=100M /dev/hd10opt
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