/usr/ is in zfs-dracut 0.7.5-1ubuntu15.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/
/usr/share/doc/zfs-dracut/
/usr/lib/
/usr/lib/dracut/
/usr/lib/dracut/modules.d/
/usr/lib/dracut/modules.d/02zfsexpandknowledge/
/usr/lib/dracut/modules.d/02zfsexpandknowledge/module-setup.sh
/usr/lib/dracut/modules.d/90zfs/
/usr/lib/dracut/modules.d/90zfs/export-zfs.sh
/usr/lib/dracut/modules.d/90zfs/module-setup.sh
/usr/lib/dracut/modules.d/90zfs/mount-zfs.sh
/usr/lib/dracut/modules.d/90zfs/parse-zfs.sh
/usr/lib/dracut/modules.d/90zfs/zfs-generator.sh
/usr/lib/dracut/modules.d/90zfs/zfs-lib.sh
/usr/lib/dracut/modules.d/90zfs/zfs-needshutdown.sh
/usr/share/
/usr/share/doc/zfs-dracut/copyright
/usr/share/doc/zfs-dracut/changelog.Debian.gz