Re: Blobs not referenced by file (anymore) are not removed by GC

From: Roberto Tyley <roberto.tyley@gmail.com>
Date: Dec 10, 2014, 23:41 UTC
Message-ID: <CAFY1eda6LyZ3z-Uu2AQpqeeCpc9mn_JXwB1+TRLkyGsG+GQzPQ@mail.gmail.com>
In-Reply-To: <xmqqbnnbjxoy.fsf@gitster.dls.corp.google.com>

On 10 December 2014 at 16:07, Junio C Hamano <gitster@pobox.com> wrote:

Show 11 quoted lines

> Jeff King <peff@peff.net> writes:
>>> git reflog expire --expire=now --all && git gc --prune=now --aggressive
>>>
>>> Maybe:
>>>
>>> git gc --purge
>>
>> Yeah, that is common enough that it might be worthwhile (you probably
>> want --expire-unreachable in the reflog invocation, though).
>
> Also you would not want an unconditional --aggressive.

After a big rewrite deleting files the re-optimisation of --aggressive can make a big difference to packsize - for instance 1.2GB to 768MB in a test I just ran - but of course it is *much* slower, so I suspect you're right about not including it.

I wasn't aware of the '--expire-unreachable=all' switch, though it seems like a 'milder' version of the '--expire=now' switch? - in that it would keep reflog entries if they haven't been changed, which is fair enough and compatible with the 'purge' goal.