Re: [PATCH] TODO: notes about v2 format for giant archives

[Eric Wong <e@80x24.org>]

Eric Wong <e@80x24.org> wrote:
> +  * Ref rotation (splitting heads by YYYY or YYYY-MM)
> +
> +  * Support multiple git repos for a single archive?
> +    This seems gross, but splitting large packs in in git conflicts
> +    with bitmaps and we want to use both features.  Perhaps this
> +    limitation can be fixed in git instead of merely being documented:
> +    https://public-inbox.org/git/20160428072854.GA5252@dcvr.yhbt.net/

OK, so I've been strongly considering having git repos based on
YYYY or YYYY-MM because of shardability and ease-of-maintenance.

The other thing is I think we can support is subsystem lists
({netdev,fsdevel,stable}@vger) in the SAME git repo(s) with a
different head for each list.  That could make subsystem lists
cheaper to archive since there's a lot of overlap with the main
list.

Headers like the List-Id:, Sender:, etc will still differ for
archival purposes and have different object_id in git; but git
should be able to delta well based on the rest of the message
based on age.