¿Cómo puedo limpiar de forma segura los archivos abiertos dejados por Spotlight en mi disco duro externo?

Spotlight decidió indexar mi disco duro externo que uso para las copias de seguridad sin pedirme permiso.

Esto me impidió expulsar de forma segura el disco duro externo sin corromper potencialmente el sistema de archivos.

He conseguido que Spotlight no vuelva a indexarlo en el futuro añadiendo el disco externo a la lista de "NO INDEXAR" en "Preferencias del Sistema > Spotlight > Privacidad".

Así que ahora Spotlight ya no interfiere con mi capacidad de expulsar mi disco duro externo.

Sin embargo, me aparecen muchos archivos como abiertos en el disco duro externo:

    >sudo lsof | grep /Volumes/Backup/
Password:
mds        59            root   27r      DIR                1,7      2856                 107 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404
mds        59            root   30u      REG                1,7         0                 152 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/journalExclusion
mds_store 183            root  txt       REG                1,7      3277                 117 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexGroups
mds_store 183            root  txt       REG                1,7         8                 119 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexTermIds
mds_store 183            root  txt       REG                1,7         8                 123 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexCompactDirectory
mds_store 183            root  txt       REG                1,7         8                 116 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexIds
mds_store 183            root  txt       REG                1,7         8                 121 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexPositionTable
mds_store 183            root  txt       REG                1,7      2056                 122 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexDirectory
mds_store 183            root  txt       REG                1,7        64                 124 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/0.indexArrays
mds_store 183            root  txt       REG                1,7     32768             4215456 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexCompactDirectory
mds_store 183            root  txt       REG                1,7    419431                 128 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.0.indexGroups
mds_store 183            root  txt       REG                1,7    131584             4215455 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexDirectory
mds_store 183            root  txt       REG                1,7    419431             4215448 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexGroups
mds_store 183            root  txt       REG                1,7    838861             1460612 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.1.indexGroups
mds_store 183            root  txt       REG                1,7   2955200                 127 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.0.indexIds
mds_store 183            root  txt       REG                1,7   7593836             2418144 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.0.indexDirectory
mds_store 183            root  txt       REG                1,7   7993368             1460611 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.1.indexIds
mds_store 183            root  txt       REG                1,7   4194304             4215447 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexIds
mds_store 183            root  txt       REG                1,7  10989320             4617084 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.1.indexDirectory
mds_store 183            root  txt       REG                1,7  68946622             2418145 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.0.indexCompactDirectory
mds_store 183            root  txt       REG                1,7 280164544             2418146 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.0.indexArrays
mds_store 183            root  txt       REG                1,7  66644118             4617085 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.1.indexCompactDirectory
mds_store 183            root  txt       REG                1,7 283469632             4617086 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.1.indexArrays
mds_store 183            root  txt       REG                1,7  33554432             4215451 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexTermIds
mds_store 183            root  txt       REG                1,7  33554432             4215453 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexPositionTable
mds_store 183            root  txt       REG                1,7  67108864             4215457 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexArrays
mds_store 183            root    6r      DIR                1,7      2856                 107 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404
mds_store 183            root   16r      DIR                1,7      2856                 107 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404
mds_store 183            root   59u      REG                1,7        28                 114 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/indexState
mds_store 183            root   63u      REG                1,7  67108864             4215457 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/live.2.indexArrays
mds_store 183            root   64u      REG                1,7  76926976                 138 /Volumes/Backup/.Spotlight-V100/Store-V2/CE09E80F-C475-425F-B3AC-62F6D4C01404/.store.db

Me preocupa esto porque Spotlight corrompió anteriormente el sistema de archivos de mi disco duro externo y perdí un año de copias de seguridad.

Así que me tranquilizaría mucho si hubiera una forma de limpiar estos archivos abiertos y quizás asegurar la integridad del sistema de archivos de mi disco externo.

¿Es esto posible?