linux-kernel - Re: [PATCH] Allow cross subvolume reflinks (2nd attempt)

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Date:	Wed, 20 Jun 2012 22:15:32 +0200
From:	Goffredo Baroncelli <kreijack@...ind.it>
To:	Alexander Block <ablock84@...glemail.com>
CC:	Calvin Walton <calvin.walton@...stin.ca>,
	linux-btrfs@...r.kernel.org, dave@...os.cz, hch@...radead.org,
	linux-fsdevel@...r.kernel.org, chris.mason@...ionio.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Allow cross subvolume reflinks (2nd attempt)

On 06/20/2012 10:05 PM, Alexander Block wrote:
> On Wed, Jun 20, 2012 at 8:11 PM, Goffredo Baroncelli <kreijack@...ero.it> wrote:
>>
>> Yes please, could someone explain the reason behind this decision ? May
>> be there are valid reasons, I am asking only to know which ones ?
>>
> The reason is that at the moment no user visible operations span mount
> boundaries
> and there were discussion on whether this should be allowed for the
> clone ioctl or
> not. 

Yes, I understood the same. But nobody was able to explain why .

For the moment, I would already be happy to have cross subvolume reflinks
> which do not span mount points, this would already be much more as we have at
> the moment.

This is reasonable.

> .
> 

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