zfs discuss - Sep 2012 - defer_destroy property set on snapshot creation

I am running NexentaOS_134f

This is really weird, but I for some reason the defer_destroy property 
is being set on new snapshots and I can''t turn it off. Normally it 
should be enabled when using the zfs destroy -d command.  The property 
doesn''t seem to be inherited from anywhere.

It seems to have just started happening.

Here are the steps showing how it works.  Really, it is working as 
expected, but the property shouldn''t be set on creation.

Create snapshot:
root at grok-zfs1:~# zfs snapshot groklab/ws08r2-U2037 at 5
root at grok-zfs1:~# zfs get defer_destroy | grep U2037\@5
groklab/ws08r2-U2037 at 5                   defer_destroy on             -

Create a clone:
root at grok-zfs1:~# zfs clone groklab/ws08r2-U2037 at 5 groklab/test2
root at grok-zfs1:~# zfs list -t all | grep test2
groklab/test2                                0   886G  11.6G  -

The snapshot is still there:
root at grok-zfs1:~# zfs list -t all | grep U2037\@5
groklab/ws08r2-U2037 at 5                       0      -  11.6G  -

Destroy the clone:
root at grok-zfs1:~# zfs destroy groklab/test2

Snapshot is gone:
root at grok-zfs1:~# zfs list -t all | grep U2037\@5
root at grok-zfs1:~#

thanks,

Geoff