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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Illumos Meetup January 2012

Posted by Chris Siden on

Last night Delphix hosted an Illumos meet up. In recognition of ZFS’s recent 10 year anniversary Matt Ahrens, John Kennedy, and I spoke about work we have been doing here at Delphix with ZFS, both on development and testing. The presentations were recorded, and my slides on ZFS feature flags and ZFS backward compatibility testing…

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