Date: Wed, 29 Jan 2014 09:04:32 +0100 From: David Demelier <demelier.david@gmail.com> To: freebsd-questions@freebsd.org Subject: Question about zfs snapshots and clones Message-ID: <52E8B610.6060204@gmail.com>
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Hello there, I have a question about snapshots and clones. I created a template dataset and snapshot for creating new jails. I call it tank/jails/template and tank/jails/template@1. So we have: tank/jails/template@1 tank/jails/A (origin template@1) tank/jails/B (origin template@1) Now, I wanted to upgrade the template and create a new snapshot @2. Then I would like to destroy the @1 because it will not be used to create new jails. Because it's the parent of A and B I needed to promote them and there is the thing that I didn't understand. I thought that promote was a way to `detach' the children of a parent so that jails lives on their own but it's not actually what I expected. zfs promote on tank/jails/A and tank/jails/B gave me unexpected results. I got my tank/jails/template@1 renamed to something like tank/jails/B@1 and the origin of tank/jails/A has been set to the latest IIRC. So, I'm guessing that promote is not actually what I wanted, how should I release the jails origin so they are completely free and I can destroy the oldest template snapshot? Regards, -- David Demelier
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