Re: [PATCH v2] btrfs-progs: subvol: change subvol set-default to also accept subvol path

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On Thu, Oct 05, 2017 at 09:57:25AM +0900, Misono, Tomohiro wrote:
> > I agree with Andrei and Hugo. We need to check that the subvolume path
> > belongs to the filesystem anyway. I don't see that in the first version,
> > so please fix it.
> > 
> 
> I'm a bit confusing, but what is the meaning of "We need to check that the subvolume
> path belongs to the filesystem"? Do you mean we should check whether the fs of current
> directory and the fs of the subvolume specified are the same or not? However, current 
> "set-default <id> <path>" does not check the <path> belong the same fs or not either.
> Also, what if the subvolume is specified by absolute path?

Ah my bad, specifying by path is enough of course. So the expected use
is:

filesystem mounted under /mnt

$ cd /mnt
$ btrfs subvol set-default ./subvol1

or 

$ cd /
$ btrfs subvol set-default /mnt/subvol1
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