On Thu, 29 Jul 2021, Zygo Blaxell wrote: > > I'm looking at a few machines here, and if all the subvols are visible to > 'df', its output would be somewhere around 3-5 MB. That's too much--we'd > have to hack up df to not show the same btrfs twice...as well as every > monitoring tool that reports free space...which sounds similar to the > problems we're trying to avoid. Thanks for providing hard data!! How many of these subvols are actively used (have a file open) a the same time? Most? About half? Just a few?? Thanks, NeilBrown