On Wed, Nov 08, 2023 at 09:09:10AM +0100, Christian Brauner wrote: > > a bind mount can of course change the dev_t - if it points to a > > different super block at the moment. > > No, a bind mount just takes an existing directory tree of an existing > filesystem and makes it visible on some location in the filesystem > hierarchy. It doesn't change the device number it will inherit it from > the superblock it belongs. That's what I'm trying to say. So if you have: /mnt/1/ with dev 8 /mnt/2/ with dev 23 then a bind mount of /mnt/1/foo to /mnt/2/bar will get your dev 8 for /mnt/2/bar So the device number changes at the mount point here, bind mount or not.
