Question 417025 in Docker Question posted in
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Docker volume mount includes invalid characters: If you intended to pass a host directory, use absolute path

I am having trouble with two-way folders with Docker.

    defaultCfg.Mounts = append(ContainerHostConfig.Mounts, mount.Mount{
        Type:   mount.TypeVolume,
        Source: fmt.Sprintf("/root%s", tmp),
        Target: fmt.Sprintf("%s", tmp),
    })

Source and target works when using bind (with CreateMountpoint being true on bind config), but on volume i have this error:

"failed to create container: Error response from daemon: create /root/tmp/metrics-60-1990068486: "/root/tmp/metrics-60-1990068486" includes invalid characters for a local volume name, only "[a-zA-Z0-9][a-zA-Z0-9_.-]" are allowed. If you intended to pass a host directory, use absolute path"

"error is as descriptive as it can get"

"read the error"

"are you capable of reading"

If you intended to pass a host directory, use absolute path

isnt this absolute?

/root/tmp/metrics-60-1990068486

what is wrong?

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2

Answers


  1. 0

    Mounting a directory is called a bind mount, so you need to use mount.TypeBind instead of mount.TypeVolume.

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  2. 0

    The error you are getting for mount.TypeVolume is due wrong name of the volume.
    Docker expects the Source to be the name of the volume, not an absolute path on the host filesystem.
    The error message is specifically complaining about the format of /root/tmp/metrics-60-1990068486 being invalid for a volume name.
    If you want to use absolute path use mount.TypeBind instead.

    Docker Volume Documentation

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