Hi,
I have upgraded from to 2008.11 to 2009.06. The upgrade process created a new 
boot environment (named opensolaris-1 in my case), but I am now getting out of 
space in my ZFS pool. So, can I safely erase the old boot environment, and if 
so will that get me back the disk space I need ?

BE            Active Mountpoint Space Policy Created          
--            ------ ---------- ----- ------ -------          
opensolaris   R      -          7.57G static 2009-01-03 13:18 
opensolaris-1 N      /          3.20G static 2009-07-20 22:38 

As you see there, my new BE has 3G only, I probably need more.

zfs list
NAME                       USED  AVAIL  REFER  MOUNTPOINT
rpool                     41.8G  6.24G  1.42G  /a/rpool
rpool/ROOT                10.4G  6.24G    18K  legacy
rpool/ROOT/opensolaris    7.18G  6.24G  6.75G  /
rpool/ROOT/opensolaris-1  3.20G  6.24G  7.36G  /
rpool/dump                 895M  6.24G   895M  -
rpool/export              28.2G  6.24G    19K  /export
rpool/export/home         28.2G  6.24G   654M  /export/home
rpool/export/home/axelle  27.5G  6.24G  27.4G  /export/home/axelle
rpool/swap                 895M  7.03G  88.3M  -

Of course, I don't want to erase any critical file or data. However, I do not 
wish to boot 2008.11 any longer as 2009.06 is working.

Thanks
Axelle
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