On Fri, Apr 28, 2017 at 8:18 AM, Amir Goldstein <amir73il@xxxxxxxxx> wrote: > On Fri, Apr 28, 2017 at 8:56 AM, Darrick J. Wong > <darrick.wong@xxxxxxxxxx> wrote: >> On Fri, Apr 28, 2017 at 06:49:45AM +0100, Andy Whitcroft wrote: >>> On Thu, Apr 27, 2017 at 03:30:35PM -0500, Eric Sandeen wrote: >>> >>> > It'd be trivial to make that a vfs function and set a flag on the vfs super >>> > if the UUID is not unique. Would that be worthwhile? I can send a patch >>> > if so. >>> >>> This only tells you that the UUID it has is unique now. As you are >>> contemplating storing them in the FS they have to be unique in space >>> _and_ time. No check you can do now can tell you if the UUID is unique >>> for all time. Right ? I don't understand this fuss about checking if a unique identifier is unique. It obviously is, if not don't call it uuid, call it nuuid. Thanks, Miklos