On Fri, 30 Jul 2021 at 09:34, NeilBrown <neilb@xxxxxxx> wrote: > But I'm curious about your reference to "some sort of subvolume > structure that the VFS knows about". Do you have any references, or can > you suggest a search term I could try? Found this: https://lore.kernel.org/linux-fsdevel/20180508180436.716-1-mfasheh@xxxxxxx/ I also remember discussing it at some LSF/MM with the btrfs devs, but no specific conclusion. Thanks, Miklos
