zfs discuss - Jul 2010 - zfs clone but destroy impossible in os2009.06 (b111)

hello all,
i guess i hit the bug:
http://defect.opensolaris.org/bz/show_bug.cgi?id=7491
on my system:
# zfs list rpool/zones/catalogue3
NAME                     USED  AVAIL  REFER  MOUNTPOINT
rpool/zones/catalogue3  10.1G  7.17G    70K  /zones/catalogue3
# zfs destroy rpool/zones/catalogue3
cannot destroy ''rpool/zones/catalogue3'': filesystem has
children
use ''-r'' to destroy the following datasets:
rpool/zones/catalogue3/ROOT/zbe at 20100709
rpool/zones/catalogue3/ROOT/zbe
rpool/zones/catalogue3/ROOT/zbe-2 at catalogue_snap
rpool/zones/catalogue3/ROOT/zbe-2 at catalogue2_snap
rpool/zones/catalogue3/ROOT/zbe-2 at test_drupal_snap
....

and:
# zfs destroy -r rpool/zones/catalogue3
cannot destroy ''rpool/zones/catalogue3'': filesystem has
dependent clones
use ''-R'' to destroy the following datasets:
rpool/zones/bibcmi4/ROOT/zbe-2 at bibcmi3_snap
rpool/zones/template_zone/ROOT/zbe at 20100709
rpool/zones/template_zone/ROOT/zbe
rpool/zones/template_zone/ROOT/zbe-2 at zbe-2
rpool/zones/template_zone/ROOT/zbe-2 at 20100709
rpool/zones/template_zone/ROOT/zbe-2
rpool/zones/bibcmi4/ROOT/zbe-2 at bibcmi_snap
rpool/zones/bibcmi/ROOT/zbe at 20100709
rpool/zones/bibcmi/ROOT/zbe
rpool/zones/bibcmi/ROOT/zbe-2 at zbe-2
...

i just want to destroy catalogue3 zone, not the others.
So according the last command, i manually promote the corresponding dataset:
# zfs promote rpool/zones/bibcmi4/ROOT/zbe-2
# zfs promote rpool/zones/catalogue4/ROOT/zbe
etc...

But now, is it possible to find all the fs that have dependant clones? (i have
17 zones, many of them created as clones).
I guess that every promote command consumes more place on rpool? that''s
what prevent me to upgrade to b134 now, i have to clean the disk before upgrade.

thanks in advance for help,

gerard
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