SWAP wih openWRT

http://wiki.openwrt.org/doc/uci/fstab

The package block-mount is required:

1. Install
   

   opkg update
   opkg install block-mount

2. enable (make it start automatically on every boot up)
   

   /etc/init.d/fstab enable

3. and start (right now)
   

   /etc/init.d/fstab start

Whenever you change your configuration, restart this to make it take effect:

/etc/init.d/fstab restart

usefull commands

df 

free 

mounts

package swap-utils

 mkswap, swapon and swapoff.

cat /proc/meminfo  

http://www.linuxhotbox.com/adminguide/lnag_drives.html#swap

www.thegeekstuff.com/2010/08/how-to-add-swap-space/ 

http://linux.about.com/library/cmd/blcmdl8_swapon.htm

FSTAB
http://wiki.openwrt.org/doc/uci/fstab#notes

Howto Swapfile
https://forum.openwrt.org/viewtopic.php?id=12419