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Excerpts from corvus's message of 2017-09-20 15:23:21 -0700:
> Hi,
> 
> We originally created the docs-draft site (and filesystem partition)
> because doc builds were *big* and we had to expire them much more
> quickly than build logs.  The expiration times were 21 days for
> docs-draft and 6 months for build logs.
> 
> The tables have turned.
> 
> Docs-draft expiration is still 21 days, but build logs have gotten so
> large we've reduced expiration there to 30 days.
> 
> Since they are more closely matched now, we can fold docs-draft back
> into the logs volume and gain several benefits.  We're currently using
> 299G of space for docs-draft.  Accounting for the extra 9 days of
> retention would bring us to about 427G of space.  Our current headroom
> on logs is 3.0T, so we can handle that change immediately with no ill
> effect.
> 
> Once the existing retention period has expired, we can reclaim the space
> from the doc-draft volume and gain an additional 1.5T of capacity in
> logs.  Once that is done, accounting for the increased use from
> docs-draft jobs, we'll have an overall net gain of 1T of free space.
> 
> On top of all that, we will improve the UX of the docs-draft system by
> making it easier to switch to the build logs on a successful build.
> Currently we have to edit the hostname in the URL to do so; but in the
> future, we can simply remove trailing path components.
> 
> Assuming there aren't any objections, we can effect this change during
> the v3 transition, then perform the volume reclamation 3 weeks later.
> 
> -Jim
> 

+1