Error Message: Unit -.mount is masked.

Received the following error message when attempting to restart a network service recently.  I do not have a technical explanation for what this means, however, i believe it may be attributed to using a proxy port forwarded – or possibly upgrading the image on disk while the service was running:

Unit -.mount is masked.

The accepted solution has been suggested as:

sudo systemctl unmask servicename

Unfortunately in my situation, this command did not return the ability to stop / restart the service in question – rebooting seems to of solved the issue.


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Lima is the visual nautical indicator for "stop instantly."

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