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Docker metadata.db blocks shutdown

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Standard 'I've searched but can't find anything' – forgive me if this is answered elsewhere!


My unRAID array won't shut down correctly – it gets stuck in a loop of 'Retry unmounting disk share(s)'. Following other topics, I installed the Open Files plugin and can see that Docker's metadata.db (/var/lib/docker/volumes/metadata.db) may block shutdown.


A custom script I run – a shoutcast server – is also listed but doesn't seem to block shutdown.


Can anyone suggest how I might be able to resolve this? I end up forcing shutdown each time I need to restart unRAID.


Many thanks.

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I'd be tempted to hose the docker.img and recreate.

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