Question

How do I know if my Ubuntu droplet is using the XFS filesystem?

Posted on March 5, 2019
Linux Basics MongoDB Ubuntu
Asked by Matt Sanchez

I recently set up the one-click MongoDB 4.0.2 droplet on Ubuntu 18.04. When I enter the MongoDB shell I get the startup warning:

** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine

I have three questions:

How do I know if I’m using the XFS filesystem?
If I’m not using it, how do I switch to it?
If I don’t use XFS, will MongoDB still function properly?

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jarland

DigitalOcean Employee

• March 8, 2019

Accepted Answer

Greetings!

Great question. By default our droplets use ext4, and you can confirm this with the following command:

df -Th

I found an article that suggests a path for converting the filesystem:

https://fedoramagazine.org/transform-file-systems-in-linux/

I cannot guarantee that using alternate file systems will not interfere with certain functions of our cloud panel.

Jarland

Nasir Mahmood • May 13, 2024

df -T should give you idea what FileSystem type you are using
The only way to use an XFS based filesystem after the VM has been created, is to use a Volume from DO Storage and mount it using xfs driver.
Mongo will definitely complain about the underlying FS not being the XFS, but it will run to the extent ext4 ( default FS ) supports it to run. However, the performance is degraded. this is what is happening with us as well.