# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 16G 4.2G 11G 28% /
udev 16G 116K 16G 1% /dev
tmpfs 16G 644K 16G 1% /dev/shm
/dev/sda1 128M 38M 84M 31% /boot
/dev/mapper/data-core 20G 173M 19G 1% /storage/core
/dev/mapper/data-log 20G 6.3G 13G 34% /storage/log
/dev/mapper/data-db 207G 191G 5.3G 98% /storage/db
How to extend the space on the Partition,, please provide some idea.