Debugging unmounting problems with DTrace

Posted by Chris Siden on

The Analysis A few weeks ago I ran in to a reoccurring problem during the unit tests for our product, the important part of the error message was always something like: cannot unmount ‘/test-domain/group-0/container-22/temp’: Device busy could not destroy ‘test-domain’: could not unmount datasets A little investigation showed that error message was coming from a…

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