Add additional retries in TUR to allow for tape devices to settle after a reset. More informative failure message and silence "already open" message.
Add additional retries in TUR to allow for tape devices to settle after a reset.
More informative failure message and silence "already open" message.

ok krw@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars