to increase Swap space in a linux box

These are the steps to increase the swap size in Linux:

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Please follow the steps:



1. Check how much swap space you already have by typing the command “swapon –s”.

2. Now use data dump (dd) command to create the extra swap file. Command  dd if=/dev/zero of=/extraswap bs=1M count=512

replace 512 with the number of megabytes you want in your auxiliary swap file.

3. Type the command mkswap /extraswap to make our file swap-consumable for the Linux kernel.

4. Now open /etc/fstab and find a line about swapfile that looks something like:

/dev/vg00/lvol1 swap swap defaults 0 0

5. Now, add one entry in /etc/fstab below ,above shown line. Add  /extraswap swap swap defaults 0 0

6. Restart the VM and perform step 1 to see increased swap.

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Hope this will solve your problem. 