VM full, but where's the files?

[SunshineGardenSmell]

So I got a Debian KVM QEMU Virt Manager VM with 20G of memory.
I've been using it for months without issue. However, recently it's gotten full.

Okay, no problem, I'll delete stuff. But when I go to delete things, everything is small.
Like if I run:

du -h | sort -hr | head -n 10

It gives a couple 1GB files of software. What's taking up all this space?! If it was the OS itself, why did I go for months with plenty of extra room?

 

[KGIII]

You might find it easier using a GUI:

A Few Ways To Visualize Disk Usage In Linux • Linux Tips

It's easy to visualize disk usage in Linux. This short article show you a few ways to visualize your disk space with Linux.

linux-tips.us

You can clean logs:

How To: Free Some Disk Space By Deleting Old Logs • Linux Tips

In today's article, we're going to free up some of your disk space by deleting old logs. It's a relatively safe and easy thing to do.

linux-tips.us

Clean apt cache:

How To: Clear The apt Cache • Linux Tips

In today's article, we're going to learn how to clear the apt cache. This is only useful if your distro uses the apt package manager.

linux-tips.us

 

[SunshineGardenSmell]

You might find it easier using a GUI:

A Few Ways To Visualize Disk Usage In Linux • Linux Tips

It's easy to visualize disk usage in Linux. This short article show you a few ways to visualize your disk space with Linux.

linux-tips.us

You can clean logs:

How To: Free Some Disk Space By Deleting Old Logs • Linux Tips

In today's article, we're going to free up some of your disk space by deleting old logs. It's a relatively safe and easy thing to do.

linux-tips.us

Clean apt cache:

How To: Clear The apt Cache • Linux Tips

In today's article, we're going to learn how to clear the apt cache. This is only useful if your distro uses the apt package manager.

linux-tips.us

Alright that was super useful. The log clear got rid of 3 GB.
And I can see with this Baobab tool the files

However, even after running that clean, there's still a ton of random junk.

this folder:
Var/log/journal/
Has 2 GB of random logs, can I just delete it?

There's random stuff in usr and Var in general

 

[KGIII]

You don't need to hold onto old logs, unless you think you're going to need them.

 

[osprey]

SunshinegardenSmell wrote:

Var/log/journal/
Has 2 GB of random logs

To prevent large journal entries such as the one you mention, you could limit the journal's size by entering a size that you decide in the configuration file: /etc/systemd/journald.conf. For example, this machine has: SystemMaxUse=50M, which actually is enough room to hold about 2 weeks of journal entries. If the machine is a very heavy user of lots of applications, then a greater size may be preferred. If the configured size is not found to be enough, it's easily adjusted.