[tarantool-patches] [PATCH 1/1] Allow to ignore space formats via command line option

[Vladimir Davydov]

On Fri, Aug 03, 2018 at 03:46:26PM +0300, Vladislav Shpilevoy wrote:
> It is a common case that an instance is running on a version
> 1.6.*, then is upgraded to 1.9 with box.schema.upgrade(). But
> some of users has malformed space formats, and some of them got
> and ignored errors on box.schema.upgrade(). Such half-upgraded
> data can not be used to start a new version due to format
> violations, and can not be rolled back because some of new system
> spaces managed to be created. And we can not repair raw xlogs and
> snapshots because we have no such tools and they are zipped.
> 
> So it would be useful to have a command line option
> --ignore-space-formats. It would allow to start an instance on
> the spaces with malformed formats, fix them, create a snapshot
> and then start with the formats turned on.
> 
> Closes #3605
> 
> @TarantoolBot document
> Title: Command line option '--ignore-space-formats'
> The option allows to turn off space formats validation before
> the instance is started. Usefull to fix malformed formats after
> an upgrade from version < 1.7.5 to >= 1.7.5.

Why a command line option? Why not a box.cfg parameter?
Or, even better, box.cfg.force_recovery?