Linked by Thom Holwerda on Wed 23rd Aug 2006 13:18 UTC, submitted by nicoladagostino
From the AppleInsider forum comes an interesting discovery about ZFS and Apple. A user who has the Leopard WWDC preview searched the system with Spotlight and found a mention of ZFS. He says: "There is no file system bundle for it, nor is there a mount utility or any other one (no fsck, now newfs, etc.). There is, however, a changed vnode.h."
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Member since:
2005-12-31
Time Machine is most certainly based on the same notification system used by Spotlight, which would allow backing up each time a file changes.
So one could very much save and back up instantaneously. I can't imagine Apple making a daily backup when they have implemented the whole Spotlight engine and notification system in the Kernel.
Actually I am quite surprised nobody proposed a backup system for OS X based on that very notification system.
If you want more info, read the following article by Amit Singh (whose book about OS X Kernel is great and which I highly recommend):
http://www.kernelthread.com/software/fslogger/