You may take a look at this article this isn't actually a explanation of why snapshots or subvolumes are used, but maybe you can read the importance of the difference from the context: http://www.h-online.com/open/features/Snapshots-and-subvolumes-747029.html On Thu, Oct 7, 2010 at 13:39, Francis Galiegue <fgaliegue@xxxxxxxxx> wrote: > > I have difficulties grabbing these two concepts. > > As far as I can tell, a snapshot is an instant, synchronized, > photography of the filesystem at a given point in time; a subvolume is > a "subroot" to a btrfs filesystem. > > While I fully understand (and use) the purpose of snapshots, I don't > quite fathom the use case for subvolumes, apart from btrfs-convert... > Why has btrfs grown such a feature in the first place? Can someone > give me a use case for them? > > -- > Francis Galiegue, fgaliegue@xxxxxxxxx > "It seems obvious [...] that at least some 'business intelligence' > tools invest so much intelligence on the business side that they have > nothing left for generating SQL queries" (Stéphane Faroult, in "The > Art of SQL", ISBN 0-596-00894-5) > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To be or not to be -- Shakespeare | To do is to be -- Nietzsche | To be is to do -- Sartre | Do be do be do -- Sinatra -- To be or not to be -- Shakespeare | To do is to be -- Nietzsche | To be is to do -- Sartre | Do be do be do -- Sinatra -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
