hi! Please review: https://code.illumos.org/c/illumos-gate/+/3731 Should provide a bit better information about failing IO. Example is in the issue. Thanks, Toomas ------------------------------------------ illumos: illumos-developer Permalink: https://illumos.topicbox.com/groups/developer/T93e39e0e0ee34ab0-M021047ef058a41a23778ee8b Delivery options: https://illumos.topicbox.com/groups/developer/subscription