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10.5: Organize data files for networked Time Machine use
Time Machine does not scan the source volume recursively for changes: this would take way too long. It uses fsevents to immediately discover changes.
10.5: Organize data files for networked Time Machine use
It will do a 'deep scan', if it finds a discrepancy between the fsevents report and what it was expecting.
10.5: Organize data files for networked Time Machine use
If it has to do a "deep traversal" often for you, then there's something wrong with your computer or the way you use it. Deep traversal will occur after crashes, removing disks without unmounting, directory corruption, or corrupted fseventsd databases. FYI /var/log/system.log carries some very nice and informative information about what's happening when TimeMachine is running.
10.5: Organize data files for networked Time Machine use
While TM usually does not rescan the entire volume while the system keeps running, the described mechanisms about how hard links are created are still valid, though. Hence, the article loses none of its message. |
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