Vincent Untz (vu...@suse.com) wrote:
> A few weeks ago, I started the work on allowing schema changes in
> pebbles, without breaking existing proposals. In short, there's a
> migration rake task that will update the proposal (and its matching
> role, if committed) to the updated schema.

[snipped]

Looks good to me except for the point I already made:

>   - there are migration scripts in
>     /opt/dell/chef/data_bags/crowbar/migrate/$barclamp/. The scripts
>     must be named $rev_$somedescription.rb; the filename can have
>     0 (001_foobar.rb will work as well as 1_foobar.rb). There can be
>     multiple scripts per revision; they will be executed by alphabetical
>     order (or reverse alphabetical order in case of downgrades).

https://github.com/crowbar/barclamp-crowbar/pull/613#issuecomment-21722923

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