One of my linux boxes ran out of disk space, which surprised me, because it definitely didn’t have that much stuff on it. When I check with df it says I have used 212GB on my / path:

$ df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       227G  212G  5.2G  98% /

So, I tried to use du to see if maybe a runaway log file was the cause, but this says I have only used 101GB on my / path (this is also more in-line with how much space I expected to be used):

$ du -h | sort -h
...
101G    /

Using those commands with sudo outputs the same sizes.

My filesystem is Btrfs, I’ve tried the suggestion to use btrfs balance start ... but this actually INCREASED my disk usage to 99% lol

So my question is… what on earth is using the remaining 111GB?? Why can I not see it in du?

  • Jozzo@lemmy.worldOP
    2·
    12 hours ago

    Just one drive, it was a clean Linux install with no funky stuff going on. I’ll have to look into Btrfs cleanup more, last time I did it the disk just filled up even more

    • magikmw@piefed.socialEnglish
      1·
      5 hours ago

      I sometimes use btrf assistant, it’s a gui helper for btrfs, shows some helpful hints, there’s balancing, scrubbing, snapshot cleanup. I should learn more about it all, but it helped a ton with figuring out what’s going on with all my space.

    • BCsven@lemmy.ca
      1·
      8 hours ago

      Yeah, I haven’t dealt with that much since OpenSUSE has all the cleanup and maintenance scheduled.

      Is your whole drive BTRFS even your /Home on same partition? The BTRFS subvolumes share a pool if setup as one, and filling up home subvolume also fills up your system subvolume, since its shared.