[tarantool-patches] Re: [PATCH v2 3/9] box: fix Tarantool upgrade from 2.1.0 to 2.1.1

[Kirill Shcherbatov]

>>> Tarantool could not start from the snapshot created by version
>>> 2.1.0 because the new version 2.1.1 does not support the
>>> index.opts.sql index opt and stops the execution.
>>> Introduced a special state OPT_DEF_LEGACY macro to ignore legacy
>>> options and introduced migration code in upgrade.lua.
>>
>> As for me, it looks satisfying, but I strongly recommend you to ask
>> other members of server team for comments on this approach.
>> Will there be other “legacy” options, or in the nearest future this is
>> going to be the only one? Moreover, opts_parse_key already features
>> “skip_unknown_options” param - could we skip “sql” option using it
>> (ofc considering some workaround)?
>>
>> Again, since it is not directly related to the main patch-set, let’s
>> consider it as independent. 
> 
> LGTM.

I've rebased this separate patch on the branch 
kshch/migration-fixup
you may cherry-pick it if it is really reasonable.