In this article I will give an example of creating a disk in RAM.
Create a directory where we will mount the disk:
sudo mkdir /mnt/ramdisk
Mount the disk in this directory:
sudo mount -t tmpfs -o rw,size=1G tmpfs /mnt/ramdisk
We check:
df -h
You can unmount the disk with the command:
sudo umount /mnt/ramdisk
In order for the disk to be automatically mounted when the operating system starts, it must be specified in the /etc/fstab file, just in case, we will make a backup copy of this file and open it in any text editor:
sudo cp -v /etc/fstab /etc/fstab.backup
sudo nano /etc/fstab
Let’s specify the line:
tmpfs /mnt/ramdisk tmpfs rw,size=1G 0 0
Restart the server and make sure the disk is mounted:
sudo reboot
See also my articles:
Installing Memcached
Test iops using fio