System Drive full because of Overlay

1. offizieller Beitrag

    I can't log in any more on the webinterface of my OMV.
    I find that my systemdrive is full.
    but i am wondering why so I check with df -h whats going on
    df -h
    Dateisystem Größe Benutzt Verf. Verw% Eingehängt auf
    udev 7,8G 0 7,8G 0% /dev
    tmpfs 1,6G 15M 1,6G 1% /run
    /dev/nvme0n1p1 102G 101G 0 100% /
    tmpfs 7,8G 0 7,8G 0% /dev/shm
    tmpfs 5,0M 0 5,0M 0% /run/lock
    tmpfs 7,8G 0 7,8G 0% /sys/fs/cgroup
    tmpfs 7,8G 4,0K 7,8G 1% /tmp
    /dev/md0 5,5T 3,0T 2,5T 55% /srv/dev-disk-by-label-Data
    overlay 102G 101G 0 100% /var/lib/docker/overlay2/22ff32952e87db69bd993db6e6134bfabd66895428f38eb41fad4d4f2c257fa9/merged
    overlay 102G 101G 0 100% /var/lib/docker/overlay2/7d82c451fae7cb15e4300f1f8345010fa31e845bc902bbba971f786a2e3f3e2e/merged
    overlay 102G 101G 0 100% /var/lib/docker/overlay2/68466f0c151d6bcd796b1ad89bedeeb93ca6760cbcceafd58ae108624ebf9ddd/merged
    shm 64M 0 64M 0% /var/lib/docker/containers/be4d5856a4f643edcea349dfac631c90f77332ee9a04f40d1f810090e65a5aef/mounts/shm
    shm 64M 0 64M 0% /var/lib/docker/containers/506ccad68027a5914f082ebd10ce0571f2b619137563464c8a3e177a4ca1377f/mounts/shm
    shm 64M 0 64M 0% /var/lib/docker/containers/cef665f2e43eeefb49b16683a219336def32eefdfe23914456bb2e31ac32351a/mounts/shm
    overlay 102G 101G 0 100% /var/lib/docker/overlay2/ff43d4d45067e3c9a87d845d87659d55e0355a276c3afaf67ab77039512cfe38/merged
    shm 64M 4,0K 64M 1% /var/lib/docker/containers/485e4b9cd0012fb25c46fedd8dc5d222039c752f4173f95742366a710fb8bbec/mounts/shm


    what is these overlay? iam sure that i mount the data drive of the docker containers on my data raid and not on my systemdrive. How i can fix this without an fresh installation? ;(

    • Offizieller Beitrag
    Zitat von VladDrakul

    helps for me, but how i can prefend this problem?

    Depends on what you are running in Docker, you could install Watchtower and add --cleanup to the Command option, but Watchtower is not recommended if you are using Pi-Hole in Docker.

    • Offizieller Beitrag
    Zitat von geaves

    Depends on what you are running in Docker, you could install Watchtower and add --cleanup to the Command option, but Watchtower is not recommended if you are using Pi-Hole in Docker.


    Curious... I've seen you say this a couple of times. I don't use Pi-Hole so I'm clueless as to it's use.. but what's the issue with Watchtower? If you're running Watchtower to maintain other containers (Transmission, Calibre, etc..) is there a way to tell Watchtower to update everything but Pi-Hole? (I've never tried to exclude a container from updating).

    • Offizieller Beitrag
    Zitat von KM0201

    Curious... I've seen you say this a couple of times. I don't use Pi-Hole so I'm clueless as to it's use.. but what's the issue with Watchtower?

    Watchtower itself is fine, but there was a thread on here with someone having issues with an update to Pi-Hole, the OP was using Watchtower, but because of the way Pi-Hole behaves having do an update via Watchtower appeared to corrupt Pi-Hole in some way. The consensus in respect of Pi-Hole was to delete it, including the networking and start again, I was having a discussion with @flmaxey on how this could be overcome and with some research there may be an answer, I'll try and find it.


    I have since moved Pi-Hole to DietPi on Rasp Pi, but even that has not been without it's problems until the recent DietPi update, now you can run pihole -up and it will update, instead of jumping through hoops.

    • Offizieller Beitrag

    Ok found it, to disable an update on a container:
    --label-enable --label=com.centurylinklabs.watchtower.enable=false pi-hole (i.e. pi-hole would be depend on how the user had specified the name)


    Does the above work, according to what I have found on github yes it does, it would have to be added to the 'Command' section in watchtower's Docker set up.

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