linux-kernel - Re: [PATCH v3 00/13] virtio-fs: shared file system for virtual machines

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Date:   Thu, 29 Aug 2019 07:58:22 -0400
From:   Vivek Goyal <vgoyal@...hat.com>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        virtio-fs@...hat.com, Stefan Hajnoczi <stefanha@...hat.com>,
        "Dr. David Alan Gilbert" <dgilbert@...hat.com>
Subject: Re: [PATCH v3 00/13] virtio-fs: shared file system for virtual
 machines

On Thu, Aug 29, 2019 at 11:28:27AM +0200, Miklos Szeredi wrote:
> On Wed, Aug 21, 2019 at 7:38 PM Vivek Goyal <vgoyal@...hat.com> wrote:
> >
> > Hi,
> >
> > Here are the V3 patches for virtio-fs filesystem. This time I have
> > broken the patch series in two parts. This is first part which does
> > not contain DAX support. Second patch series will contain the patches
> > for DAX support.
> >
> > I have also dropped RFC tag from first patch series as we believe its
> > in good enough shape that it should get a consideration for inclusion
> > upstream.
> 
> Pushed out to
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git#for-next
> 

Awesome.

> Major changes compared to patchset:
> 
>  - renamed to "virtiofs".  Filesystem names don't usually have
> underscore before "fs" postfix.
> 

Sound good to me.

>  - removed option parsing completely.  Virtiofs config is fixed to "-o
> rootmode=040000,user_id=0,group_id=0,allow_other,default_permissions".
> Does this sound reasonable?

These are the options we are using now and looks like they make lot of
sense for virtiofs. I guess if somebody needs a different configuration
later we can introduce option parsing and override these defaults.

> 
> There are miscellaneous changes, so needs to be thoroughly tested.

I will test these.

> 
> I think we also need something in
> "Documentation/filesystems/virtiofs.rst" which describes the design
> (how  request gets to userspace and back) and how to set up the
> server, etc...  Stefan, Vivek can you do something like that?

Sure, I will write up something and take Stefan's input as well.

Thanks
Vivek