I'm using Ubuntu Server 22.04. The server has an HDD in it, and I'd like to be able to speed up disk access for that HDD. My system boots from an SSD, so my idea is that maybe I can use space on the SSD as a disk cache for the HDD. So I would have a file /home/ThisFileOnSsd that would act as a disk cache for /mnt/ThisSlowHDD.
I have a large amount of data on the HDD already, and the SSD is a boot drive as explained earlier, so I am unable to format or make dangerous changes to either drive.
Is there a way to do this?
