Tutorial: How to Unmount Swap in Linux

Although we have increased the size of SWAP partition and even rebooting the computer all, the size of which is read by Linux remains as before. Apparently we must first unmount the SWAP this:

swapoff -a

Then re-create the SWAP partition so that all capacity is used:

mkswap /dev/mapper/vg_db-lv_swap

And the last step, enable back Swap:

swapon /dev/mapper/vg_db-lv_swap

Can check using the following command:

free -m