Re: What to do about subvolumes?

[Chris Mason <chris.mason@oracle.com>]

Excerpts from C Anthony Risinger's message of 2010-12-01 09:51:55 -0500:
> On Wed, Dec 1, 2010 at 8:21 AM, Josef Bacik <josef@redhat.com> wrote:
> >
> > === How do we want subvolumes to work from a user perspective? ===
> >
> > 1) Users need to be able to create their own subvolumes.  The permission
> > semantics will be absolutely the same as creating directories, so I don't think
> > this is too tricky.  We want this because you can only take snapshots of
> > subvolumes, and so it is important that users be able to create their own
> > discrete snapshottable targets.
> >
> > 2) Users need to be able to snapshot their subvolumes.  This is basically the
> > same as #1, but it bears repeating.
> 
> could it be possible to convert a directory into a volume?  or at
> least base a snapshot off it?

I'm afraid this turns into the same complexity as creating a new volume
and copying all the files/dirs in by hand.

-chris
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