Un-revert a snap

[YC Cheng]

I think we need a way to just Un-revert from rev 20 to rev 29 without
remove rev 29.

Shall we fire a bug for that if we don't have such method exists now ?


2016-10-27 14:13 GMT+08:00 Didier Roche <didrocks at ubuntu.com>:

> Le 27/10/2016 à 03:01, Marcos Alano a écrit :
> > Hello guys,
>
> Hey Marcos,
> >
> >
> > Sorry if I'm in the wrong mailing list. That's the only one about snap i
> > could found. The question is: how I revert-revert (un-revert) a snap? I
> > can install a snap:
> >
> > (sudo snap install hello) after thatr I can upgrade a snap (snap refresh
> > hello --channel=beta hello) and finally revert (sudo snap revert hello).
> > But after that if I try to re-upgrade I just can't:
> >
> > $ sudo snap refresh --beta hello
> >
> > error: cannot refresh "hello": snap "hello" has no updates available
> >
> > I'm doing something wrong?
>
> You are not doing it wrong :) The revert command "blacklists" this
> particular snap revisions on purpose, so that you don't reupdate to it.
> However, there is a way to get back to it! You can remove explicitely
> that revision (without removing the current snap). Data associated to
> the reverted revision will be cleaned up as well.
> Then, you can refresh.
>
> In a concrete example with the hello snap:
> 20 is the revision in the stable channel, 29 corresponds to the revision
> in the beta channel.
>
> # Install and update
> $ snap install hello
> $ snap list hello
> Name   Version  Rev  Developer  Notes
> hello         2.10     20   canonical  -
> $ snap refresh hello --beta
> $ snap list hello
> Name   Version  Rev  Developer  Notes
> hello         2.10.1   29   canonical  -
>
> # Revert
> $ snap revert hello
> $ snap list hello
> Name   Version  Rev  Developer  Notes
> hello         2.10     20   canonical  -
>
> # Remove reverted version (and associated data)
> $ snap remove hello --revision=29
> hello removed
> $ snap list hello
> Name   Version  Rev  Developer  Notes
> hello         2.10     20   canonical  -
>
> # Reupdate
> $ snap refresh hello --beta
> $ snap list hello
> Name   Version  Rev  Developer  Notes
> hello         2.10.1   29   canonical  -
>
> I hope that answer your questions :)
> Cheers,
> Didier
>
>
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