Edit: SOLVED thanks to r00ty !

Hello, I have this weird issue that my Debian 11 will tell me the root folder is full, while I can only find files for half of the accounted space.

df -h reports 56G while the disk analyser (sudo baobab) only finds 28G.

Anyone ever encountered this? I don’t have anything mounted twice… (Not sure what udev is). Also it does not add up to 100%, it should say 7.2G left not 4.1G

df -h /dev/sda* Filesystem Size Used Avail Use% Mounted on udev 16G 0 16G 0% /dev /dev/sda1 511M 22M 490M 5% /boot/efi /dev/sda2 63G 56G 4.1G 94% / /dev/sda4 852G 386G 423G 48% /home

Edit: my mtab

Edit 2: what Gparted shows

  • BeatTakeshi@lemmy.worldOP
    20·
    5 months ago

    This! Thank you, this allowed me to find the culprit! It turns out I had an external disk failure some weeks ago, and a cron rsync job was writing in /mnt/thatdrive. When the externaldrive died rsync created a folder /mnt/thatdrive. Now that I replaced the drive, /mnt was disregarded by the disk analyser, but the folder was still there and indeed hidden by the mount… It is just a coincidence that it was half the size of /

    SOLVED!

    du -hs /mnt/rootonly/* 0 /mnt/rootonly/bin 275M /mnt/rootonly/boot 12K /mnt/rootonly/dev 28M /mnt/rootonly/etc 4.0K /mnt/rootonly/home 0 /mnt/rootonly/initrd.img 0 /mnt/rootonly/initrd.img.old 0 /mnt/rootonly/lib 0 /mnt/rootonly/lib32 0 /mnt/rootonly/lib64 0 /mnt/rootonly/libx32 16K /mnt/rootonly/lost+found 24K /mnt/rootonly/media 30G /mnt/rootonly/mnt 773M /mnt/rootonly/opt 4.0K /mnt/rootonly/proc 113M /mnt/rootonly/root 4.0K /mnt/rootonly/run 0 /mnt/rootonly/sbin 4.0K /mnt/rootonly/srv 4.0K /mnt/rootonly/sys 272K /mnt/rootonly/tmp 12G /mnt/rootonly/usr 14G /mnt/rootonly/var 0 /mnt/rootonly/vmlinuz 0 /mnt/rootonly/vmlinuz.old

    • Archr@lemmy.world
      19·
      5 months ago

      This might help in the future in case you setup a remote mount for backups in the future. Look into using systemd’s automount feature. If the mount suddenly fails then it will instead create an unwritable directory in its place. This prevents your rsync from erroneously writing data to your root partition instead.