Re: [PATCH -V3] Generic name to handle and open by handle syscalls

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On Mon, 26 Apr 2010 06:28:44 -0400
Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:

> On Mon, Apr 26, 2010 at 08:16:33PM +1000, Neil Brown wrote:
> > uuids - as Ted as shown - are not necessarily unique (despite the name),
> > so using them to perform a lookup will either be imperfect (not good for a
> > kernel interface) or will impose extra uniqueness which would break current
> > configurations.
> 
> UUID can easily be made unique.  XFS for example refuses to mount
> filesystems with duplicate UUIDs.
> 

In the email from Ted that I referred to he identified two cases where
UUIDs are not unique.  Are you suggesting that we should cause those
use-cases - which work today - to fail?

NeilBrown
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