How to mount Linux folders into RAM using tmpfs
When you are doing a lot of I/O operations on a set of files, you may wish to keep files in RAM to speed up everything.
Sometimes, you may wish to keep some files in RAM just because you don’t need to preserve them (e.g. temporary files).
If you ever had problems like these, maybe tmpfs can help you.
What is a TMPFS and how can we use it?
Tmpfs stands for Temporary File System.
To create files inside a tmpfs-mounted folder means that they will disappear when you shutdown your PC or unmount the folder.
How to create a tmpfs folder?
First, create a folder to use as a mount point.
mkdir [foldername]
Then, transform it into a tmpfs folder.
sudo mount -t tmpfs -o size=[desiredSize] tmpfs [folderPath]
Now, we can check if everything is fine with df command.
df -lh
We have created a folder mounted into RAM. Its size is 512MB, but it can be easily modified.
