> > The alternative (and completely safe) solution is to add another file > > to proc. Me no likey. > > Since we need saner layout, I would strongly suggest exactly that. I don't think there's all that much wrong with the current layout, except the two dummy zeroes at the end. Or, something else needs fixing in there? > > major:minor -- is the major minor number of the device hosting the filesystem > > Bad description. "Value of st_dev for files on that filesystem", please - > there might be no such thing as "the device hosting the filesystem" _and_ > the value here may bloody well be unrelated to device actually holding > all data (for things like ext2meta, etc.). Right. > > 1) The mount is a shared mount. > > 2) Its peer mount of mount with id 20 > > 3) It is also a slave mount of the master-mount with the id 19 > > 4) The filesystem on device with major/minor number 98:0 and subdirectory > > mnt/1/abc makes the root directory of this mount. > > 5) And finally the mount with id 16 is its parent. > > I'd suggest doing a new file that would *not* try to imitate /etc/mtab. > Another thing is, how much of propagation information do we want to > be exposed and what do we intend to do with it? I think the scheme devised by Ram is basically right. It shows the relationships (slave, peer) and the ID of a master/peer mount. What I changed, is to always show a canonical peer, because I think that is more useful in establishing relationships between mounts. Is this info sensitive? I can't see why it would be. > Note that "entire > propagation tree" is out of question - it spans many namespaces and > contains potentially sensitive information. So we won't see all nodes. With multiple namespaces, of course you are only allowed to see a part of the tree, but you could have xterms for all of them, and can put together the big picture from the pieces. > What do we want to *do* with the information about propagation? Just feedback about the state of the thing. It's very annoying, that after setting up propagation, it's impossible to check the result. Miklos - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
