Swap on file

Now you can resize the original swap space. You can manually remove the temporary swap file or leave it as it is and it will be automatically deleted on the next boot. If you have enough free RAM or if you created a temporary swap space, swapoff your original file.

Now you can use fallocate command to change the size of the file. You may have your reasons for not using swap file on Linux. If you want to remove it, the process is similar to what you just saw in resizing the swap. I think you now have a good understanding of swap file concept in Linux.

You can now easily create swap file or resize them as per your need. If you have anything to add on this topic or if you have any doubts, please leave a comment below. Also a movie buff with a soft corner for film noir. Anyone else have this issue. This has happened on both 18 and Please log in again. The login page will open in a new tab.

After logging in you can close it and return to this page. Like what you read? Please share it with others. We use an USB disk for swap, and it will not retain the swapfile after reboot. If you don't need to disable any existing swap partition and all you need is to create a swap file and activate it, simply skip steps 1 and 2.

On my Ubuntu Ubuntu Therefore I had to move the swap to a file myself. As a result, the instructions below were tested on my Ubuntu They should work on any Linux distribution though.

It's important to mention that you can't use a swap file with a BTRFS filesystem thanks to Isaac for mentioning this in the comments. Also, hibernating to disk will no longer work out of the box when using a swap file. This can be done but I can't test it because resuming from hibernation didn't work on my system previously to switching to a swapfile so I just gave up on using hibernation. The priority is a value between -1 and Higher numbers indicate higher priority.

If no priority is specified, it defaults to Display swap usage summary by device. Not available before Linux 2. In case you want to remove added swap, you can do it with swapoff command.

Skip to primary navigation Skip to main content Skip to primary sidebar Skip to footer navigation. Use -f to force. Mem: k total, k used, k free, k buffers Swap: k total, 0k used, k free, k cached