Changing swap space from HDD to SSD

Question

While installing Ubuntu 18.04 LTS I created swap in hard drive which is leading me hang for heavy applications because I have 8 GB of RAM.

Answer 1

It's not a good idea to use the SSD drive as the swap space but if the life-span of the device is not a concern for you , you can manually delete your current swap partition and create a new one .

First off you have to unmount the current swap (Check your memory usage since unmounting the swap might cause bottlenecks in your RAM) :

sudo swapoff -a

Then delete your swap file (presumably it's /swapfile )

sudo rm /swapfile

And create a new swapfile in your SSD :

fallocate -l 2G /path/to/custom/swapfile/in/ssd   #Change the size to suit your needs

then change the permissions :

sudo chmod 0600 /your/swapfile

make a swap partition :

sudo mkswap /your/swapfile

and finally mount it :

sudo swapon /your/swapfile

Now you should be able to use the new swap partition.

And don't forget to change the swap file address in your /etc/fstab file to point to the new swap partition not the old one. The line containing swap should look like this :

/new/swap/location    none    swap    sw    0   0

And if you want to use the hibernation feature , you should update your grub config as @C.S.Cameron mentioned :

sudo update-grub