On Thu, Mar 02, 2017 at 11:38:03AM -0500, Olga Kornievskaia wrote: > > On Mar 2, 2017, at 11:07 AM, Christoph Hellwig <hch@xxxxxx> wrote: > > NAK, we really should not do operations between different > > superblocks. > > Can you provide some reasoning as to why? What would it break? The > reasoning for including one is to allow for a file system to achieve > better performance which seems like a feature that would be of great > benefit. -- Yes, this has come up a few times. What's going on?: - There was an explanation, and I missed it. - The explanation is complicated and Christoph hasn't had time to write it up. - Christoph has a strong suspicion there are issues without being sure exactly where they are. - Something else? I mean, the whole enterprise is dead in the water without this, as far as I can tell, so I'd really like to understand the answer one way or the other. --b.
