Preventing hashdeep from crossing mount points? Is there anyway of preventing hashdeep from traversing file systems? I have my main zfs volume mounted within my (FreeBSD) tools jail, viz: /mnt/VOLUME1/ian on /mnt/VOLUME1/jails/tools/mnt/ian (nullfs, local) so, naturally, a hashdeep on /mnt/VOLUME1 is never going to end. Any way to prevent that, other than unmounting?

You can "bind mount" the top level, `/mnt/VOLUME1/ian`, to a different spot, then run `hashdeep` on it. E.g.,


mkdir /mnt/TMP
mount -o bind /mnt/VOLUME1/ian /mnt/TMP


The "bind mounted" directory tree does not include sub mounts of the source. I suppose `man mount` can give some more details.