De facto macht BorgBackup genau das. Alle Backups sind im Repository Vollbackups, global im konkreten Repository dedupliziert.
Rsync überträgt dann natürlich nur neue Blöcke, die BorgBackup erzeugt hat.
building file list ... done
deleting borg/integrity.69408
deleting borg/index.69408
deleting borg/hints.69408
deleting borg/data/68/68150
deleting borg/data/68/68149
deleting borg/data/68/68146
deleting borg/data/68/68145
deleting borg/data/68/68144
deleting borg/data/68/68143
deleting borg/data/68/68139
deleting borg/data/68/68138
deleting borg/data/68/68130
deleting borg/data/69/69408
deleting borg/data/69/69404
deleting borg/data/69/69403
deleting borg/data/69/69402
deleting borg/data/69/69397
borg/
borg/hints.69444
borg/index.69444
borg/integrity.69444
borg/data/68/
borg/data/69/
borg/data/69/69409
borg/data/69/69410
borg/data/69/69411
borg/data/69/69412
borg/data/69/69413
borg/data/69/69414
borg/data/69/69415
borg/data/69/69416
borg/data/69/69417
borg/data/69/69418
borg/data/69/69419
borg/data/69/69420
borg/data/69/69421
borg/data/69/69422
borg/data/69/69423
borg/data/69/69424
borg/data/69/69425
borg/data/69/69426
borg/data/69/69435
borg/data/69/69437
borg/data/69/69438
borg/data/69/69439
borg/data/69/69440
borg/data/69/69441
borg/data/69/69442
borg/data/69/69443
borg/data/69/69444
sent 1.66G bytes received 968 bytes 21.14M bytes/sec
total size is 791.35G speedup is 476.98
Alles anzeigen
80 Sekunden über Gf. Zuvor über DSL hätte es 320 Sekunden gedauert, also je Nacht keine sechs Minuten.
Und es geht ja nicht nur um die optimierte Übertragung. Hier habe ich 49 Generationen Backup im Repository:
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Original size Compressed size Deduplicated size
All archives: 49.04 TB 43.05 TB 780.89 GB
Unique chunks Total chunks
Chunk index: 4628902 165381560
Effektiv sind nur 780 GB belegt.