I have my docker running on a cache drive (128GB SSD) and it keeps saying it's out of space when I try to update or install any new docker apps.

 

This is the exact message I get:

Quote

Error: write /var/lib/docker/tmp/GetImageBlob251719273: no space left on device

 

Here are a few commands I've seen when this has come up, but I never really saw a solution:

 

# btrfs fi show /mnt/cache

Label: none  uuid: cf6f095f-2899-43c9-83bc-6df0ddbc312c
        Total devices 1 FS bytes used 24.31GiB
        devid    1 size 119.24GiB used 28.03GiB path /dev/sdh1

 

# btrfs fi df /mnt/cache

Data, single: total=26.00GiB, used=24.27GiB
System, single: total=32.00MiB, used=16.00KiB
Metadata, single: total=2.00GiB, used=44.98MiB
GlobalReserve, single: total=16.00MiB, used=0.00B

 

The dashboard shows that I have plenty of room:

 

I've attached my diagnostics file. I would really like to get this going if anyone has some tips I can use.

 

 

 

diagnostics-20171108-1404.zip

Your docker image is full:

 

Filesystem      Size  Used Avail Use% Mounted on
/dev/loop0       20G   19G   25M 100% /var/lib/docker

 

Edited November 8, 20178 yr by johnnie.black

How do I get more space? I don't even have that many dockers installed.

5 hours ago, m0ngr31 said:

I don't even have that many dockers installed.

 

Likely there's a docker with incorrect mappings saving data to the docker image itself.

 

The image size is set on:

 

Settings -> Docker Settings

Perfect thanks!