From the ZFS man page:
     Clones can only be created from a snapshot. When a  snapshot
     is  cloned,  it  creates  an implicit dependency between the
     parent and child. Even though the clone is created somewhere
     else  in the dataset hierarchy, the original snapshot cannot
     be destroyed as long as a clone exists.  The  "origin"  pro-
     perty exposes this dependency, and the destroy command lists
     any such dependencies, if they exist.

     The  clone  parent-child  dependency  relationship  can   be
     reversed  by using the "promote" subcommand. This causes the
     "origin" file system to become a clone of the specified file
     system,  which  makes it possible to destroy the file system
     that the clone was created from.

This implies that the question being asked is incomplete. What are
they trying to do?
 -- richard

On Aug 31, 2009, at 7:30 AM, Henrik Bjornstrom - Sun Microsystems wrote:

Hi !

Have anyone given an answer to this that I have missed ? I have a customer that have the same question and I want to give him a correct answer.

/Henrik

Ketan wrote:
I created a snapshot and subsequent clone of a zfs volume. But now i 'm not able to remove the snapshot it gives me following error
zfs destroy newpool/ldom2/zdi...@bootimg
cannot destroy 'newpool/ldom2/zdi...@bootimg': snapshot has dependent clones
use '-R' to destroy the following datasets:
newpool/ldom2/zdisk0

and if i promote the clone then the original volume becomes the dependent clone , is there a way to destroy just the snapshot leaving the clone and original volume intact ?



--
Henrik Bjornstrom

Sun Microsystems    Email:  henrik.bjornst...@sun.com
Box 51              Phone:  +46 8  631 1315
164 94  KISTA           SWEDEN
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