How to clear space on my root / partition SOLVED

preginald · 2014-08-28 07:03:42

Hi folks,

I did recently install docker and started pulling docker images to learn but then started getting error messages that was related to running out of storage.
I discovered that docker caches images in /var/lib/docker/devicemapper... and as a result my root folder was completely full so I deleted all the docker images but the /var/lib/docker... folder was still taking up most of the space, around 17GB. I deleted a 17GB 'data' file in the /var/lib/docker/devicemapper/devicemapper folder which reduced the size of the /var folder however when I do "df -h" I get the following output:

[root@xps /]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        24G   21G  1.5G  94% /
dev             2.0G     0  2.0G   0% /dev
run             2.0G  624K  2.0G   1% /run
tmpfs           2.0G   29M  2.0G   2% /dev/shm
tmpfs           2.0G     0  2.0G   0% /sys/fs/cgroup
tmpfs           2.0G  176K  2.0G   1% /tmp
/dev/sda1        88M   35M   47M  43% /boot
/dev/sda4       101G   13G   84G  13% /home
tmpfs           396M     0  396M   0% /run/user/1000

When I do "ncdu -x /" as root from the "/" directory I get the following output:

    2.8GiB [##########] /usr                                                                                                                                                                                                                                                   
  532.1MiB [#         ] /var
  168.5MiB [          ] /root
   16.2MiB [          ] /opt
   10.8MiB [          ] /etc
    9.3MiB [          ] /srv
   32.0KiB [          ] /mnt
e  16.0KiB [          ] /lost+found
    8.0KiB [          ] /media
@   0.0  B [          ]  sbin
@   0.0  B [          ]  lib64
@   0.0  B [          ]  lib
@   0.0  B [          ]  bin
>   0.0  B [          ] /tmp
>   0.0  B [          ] /sys
>   0.0  B [          ] /run
>   0.0  B [          ] /proc
>   0.0  B [          ] /home
>   0.0  B [          ] /dev
>   0.0  B [          ] /boot

The biggest folder is /usr taking up 2.8GB.

I have performed "pacman -Qdt" to remove orphan packages, "pacman -Sc" to remove packages not installed on my system,

Would someone please help me find out why I have 21G used and how to free up this space?

Thanks, Peter

UPDATE: I rebooted my session and noticed a message about FSCK during bootup. When I performed "df -h" I found that my root partition had cleared itself to show the following output:

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3        24G  3.6G   19G  17% /

.

Last edited by preginald (2014-08-28 07:16:43)

jasonwryan · 2014-08-28 07:06:13

PLease use code tags when pasting to the boards: https://wiki.archlinux.org/index.php/Fo … s_and_Code

Use ncdu to find what is using the space...

Arch Linux

#1 2014-08-28 07:03:42

How to clear space on my root / partition SOLVED

#2 2014-08-28 07:06:13

Re: How to clear space on my root / partition SOLVED

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