Overflow filesystem mounted as /tmp in linux

If your “/tmp” mount on a linux filesystem is mounted as overflow (often sized at 1MB), this is likely due to you not specifying “/tmp” as its own partition and your root filesystem filled up and “/tmp” was remounted as a fallback. To fix this after you’ve cleared space, just unmount the fallback and it should remount at its original point:

sudo umount overflow

If you get an error because the device is busy, try the following command, to do a lazy umount:

sudo umount -l /tmp
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