Unable to update because low space is reported...

[Beardmann]

Hi
I have setup a fairly new installation on Ubuntu 24.04.2 LTS a base minimized install.
I am on Cloudron version 9.0.6
I have a 200GB disk which I use about 10% of, so nowhere near full.
I have just setup email and one webmail application...

Never the less I get this error as I try to update:

box:tasks updating task 143 with: {"percent":1,"message":"Checking disk space"}
Nov 19 21:57:47 box:shell df: df -B1 --output=source,fstype,size,used,avail,pcent,target /
Nov 19 21:57:47 box:tasks setCompleted - 143: {"result":null,"error":{"message":"Not enough disk space. Updates require at least 2GB of free space. Available: 1.61GB","reason":"FileSystem Error"},"percent":100}
Nov 19 21:57:47 box:tasks updating task 143 with: {"completed":true,"result":null,"error":{"message":"Not enough disk space. Updates require at least 2GB of free space. Available: 1.61GB","reason":"FileSystem Error"},"percent":100}
Nov 19 21:57:47 box:taskworker Task took 0.045 seconds
Nov 19 21:57:47 BoxError: Not enough disk space. Updates require at least 2GB of free space. Available: 1.61GB

And here is what Ubuntu see...

root@mail:# df -h
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              1.6G  2.4M  1.6G   1% /run
efivarfs                           256K   63K  189K  25% /sys/firmware/efi/efivars
/dev/mapper/ubuntu--vg-ubuntu--lv  194G   18G  169G  10% /
tmpfs                              7.9G     0  7.9G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          2.0G  192M  1.6G  11% /boot
/dev/sda1                          1.1G  6.2M  1.1G   1% /boot/efi
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/84f24b757b9d84f88ff1ea3b4cfd9794b647233ae8ce868f2bc1d14c5a9cfea5/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/8c1f127a5eb1c459789e720b5e691b30106bd8215d484e734580a0f53683f038/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/461d38e9d745de889c78dd1205730e5857b9c42f237a7090020bcda57f890ad9/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/6ff8dafc4a68e9a23e7150f9b99d51bc5e23596f2aae354a5400cf3e06fc6fb6/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/7484467bc8771001d5c33663c3f2511966a4a7709ea8c11c0b8851835d73db73/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/beecafceb85397ed3feec60da9818a8296d97489a98d79bb3bffb97cf0f429df/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/0e3cc03e3499a83df17095fb7ed82ae8a7242ff29d2737390059812b88d35e3f/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/591bfec501f3dbde7a5260f5cfa4b4604a2925c85606737e0898c39b83a23971/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/bc4f5d327e0a565e4f518bf43a04ff1009a3e5ec5fa1fc32546f360c8c342973/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/f0eee6ebdac3fc41ac8dd9ccb550a4acd63ee942ddbe82559e9c0e7f0de49117/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/fce1b1a6e63eb255557a5bebf5b784ab9eacc8c0903b65a8287bd5d139180aa3/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/4c79e27e53b8bfa1cf5b1f7c92e3ee7b7520e820b63bbb08d2fb9d9b231000c6/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/4bb18472bb5a6f790408516877ca8272ad333f0d57b5c6dcb3bd00ae17a065fb/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/5d6479abaf9b5e14e10a3e3004e48ae0b4f172f9cfb5b24c67d2eda5258c455d/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/3919e9855fa1a162d52a00ae48305ea5f24ef3d3c4913ccd5c9e50e2c2d279d9/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/f91682163a94657121c295be69085becb32ae6dd6556fc8e20c7336532797f35/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/56563fcb79f8a6c31a34fa08ce994f72c07e62158aba7e43250fa28992e7fd1a/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/31f0f81d7f111405202f7189ae9a5a88c89710803a460b6fae218ff560d557f9/merged
overlay                            194G   18G  169G  10% /var/lib/docker/overlay2/d9ec2a90080ec93141176aebde241a2fe91aaa15e14c9629400086dfc775beb7/merged
tmpfs                              1.6G   12K  1.6G   1% /run/user/1000

To me it looks like the update space check looks at tmpfs in order to get the 1.6GB? So maybe the script is "broken" somehow? Or am I missing something here?
Maybe (just maybe) this could be because this is a minimized version of Ubuntu, maybe the "df" command is different some how to the one you get if you "unminimize" your installation...

So here is the df details just in case...

root@mail:# df --version
df (GNU coreutils) 9.4

/B

[nebulon]

The code in question uses df -B1 --output=source,fstype,size,used,avail,pcent,target / to check the rootfs at /.
Can you run that via SSH and see what that reports?