Alex Hornung <ahornung@gmail.com> added the comment:
I finally had some time to look into this. It seems you were using 'vn' disks.
The actual issue arises when a device is ripped out from under devfs while it's
still in use (mounted or for that matter open in any other way).
vn has a large number of issues I'm currently working on, and hope to commit it
relatively soon.
Regards,
Alex Hornung
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priority: -> bug
status: chatting -> in-progress
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DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue1561>
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