On Mon, May 02, 2022 at 06:47:46PM +0200, Julian Andres Klode wrote: > It says to make / as subvolume as well, which seems incomplete, as > mounted at / is the subvolume @ (that's the standard Ubuntu layout);
That would be to make it at @root or similar. > updatedb needs to parse /proc/mounts, look for subvol= flag, and > for each subvol= traverse the shortest path (or first path it sees). There's no way you can meaningfully say that /a is shorter than /b. And the order Linux gives you a directory entry back is pretty much random, so “first it sees“ would be a nightmare for incremental updatedb. If you don't want bind mounts pruned (and that includes btrfs subvolumes on the inside of each other), you'll need to turn off the bind mount pruning option. Or you'd have to fix btrfs so that it doesn't implement subvolumes as bind mounts :-) /* Steinar */ -- Homepage: https://www.sesse.net/
