Re: [RFC PATCH v3 0/7] btrfs-progs: Allow normal user to call "subvolume list/show"

[Zygo Blaxell <ce3g8jdj@umail.furryterror.org>]

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On Mon, Mar 19, 2018 at 04:30:17PM +0900, Misono, Tomohiro wrote:
> This is a part of RFC I sent last December[1] whose aim is to improve normal users' usability.
> The remaining works of RFC are: 
>   - Allow "sub delete" for empty subvolume

I don't mean to scope creep on you, but I have a couple of wishes related
to this topic:

  - allow "rmdir" to remove an empty subvolume, i.e. when a subvolume is
    detected in rmdir, try switching to subvol delete before returning
    an error.  This lets admin tools that are not btrfs-aware do 'rm
    -fr' on a user directory when it contains a subvolume.  Legacy admin
    tools (or legacy tools in general) can't remove a subvol, and there
    is no solution for environments where we can't just fire users who
    create them.

  - mount option to restrict "sub create" and "sub snapshot" to root only.
    If we get "rmdir" working then this is significantly less important.

>   - Allow "qgroup show" to check quota limit
> 
> [1] https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg70991.html


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