A filesystem's device id (st_dev) may change on reboot (eg with zfs). Instead, we can use the files base path (+underlying inode) to generate an inode, which will remain constant across reboots. However, this may have unexpected effects if multiple unique devices appear under a base path.
Like hybrid_hash, basehybrid_hash/32 hashes relative path for dirs and basepath_hash for files
Original patch by thrnz@github
PhracturedBlue