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10.5: Safer sleep during networked Time Machine backups
HFS+ volumes (including the disk images used for remote time machine) have a journal which should prevent the disk from becoming corrupted in this scenario. This won't prevent data from being lost (e.g., the last file you were backing up may not get fully written) but your backup volume should not become corrupted. For this to work, however, the journal has to be successfully written to the disk image which is a bit tricky over a network. (This might be part of the reason Apple does not support third-party servers.) If you are seeing corruption in this case you should file a bug report with Apple so they can look into it. Personally, I've been running this way for a while and haven't seen any corruption when I verify my time machine disk image, but I'm only backing up over a wired network.
10.5: Safer sleep during networked Time Machine backups
I am the original poster, I had not created my macosxhints account before submission. I can attest that the corruption does in fact occur, and also that when the image is unmounted correctly it destabilizes the machine when you wake up on another network. Because these are all timing issues the problems won't show up each and every time but when you switch networks as often as I do it is a problem. |
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