Over the past day or so, we’ve spotted a couple of worrying messages on Apple’s support forums and mailing lists about a possible filesystem bug in Lion (10.7), in particular:
and
While we haven’t yet been able to reproduce or verify these reports, if they are real, it is possible that they might be triggered by the “Quick (on-line)” defragmentation option in our iDefrag product. They will not occur with the off-line algorithms as those use our own code rather than Apple’s for accessing the disk.
Note that, if these reports are to be believed, the bug is in Apple’s implementation of HFS+ itself, and not in any of our products. We’re drawing attention to the problem primarily to warn our customers of a possible problem, and not because we or any of our customers have seen or reported the problem ourselves.
