Greetings,

I was doing some debugging today and I noticed that FSEventsCopyUUIDForDevice() occasionally returns a different value for a given device. The frequency varies, but the UUID seems to change about every week or so. This apparently has been going on for years.

Is this expected behavior?

I would have expected the UUID to be more persistent. I certainly haven't reformatted my drives or anything, and I notice that the event ID haven't rolled over either. Are there other reasons why the UUID isn't stable (on my system)?

Thanks,

James

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