From: Michael Haggerty <mhagger@alum.mit.edu>
To: Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>
Cc: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Stefan Beller" <sbeller@google.com>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"David Turner" <novalis@novalis.org>,
"Brandon Williams" <bmwill@google.com>,
git@vger.kernel.org
Subject: Re: [PATCH v2 00/29] Create a reference backend for packed refs
Date: Sat, 24 Jun 2017 13:14:42 +0200 [thread overview]
Message-ID: <57a15496-ab0b-97fc-b6a2-8c2526f2c5d3@alum.mit.edu> (raw)
In-Reply-To: <20170624011131.5kgmzgpb4vtwikk5@sigill.intra.peff.net>
On 06/24/2017 03:11 AM, Jeff King wrote:
> On Fri, Jun 23, 2017 at 02:47:01PM -0700, Junio C Hamano wrote:
>
>>> Speculating on my own question. I guess it would prepare us for a day
>>> when a possible ref store is to use a packed-refs _without_ loose refs.
>>> IOW, the property is defined on packed-refs today, but a possible future
>>> direction would be to use it by itself. But maybe I'm just making things
>>> up.
>>
>> OK. In other words, it's not a packed-refs's characteristics that
>> cruft are allowed. It's that a ref storage that is implemented as
>> an overlay of one storage (which happens to be the loose one) on top
>> of another (which happens to be the packed refs file) allows the
>> latter one to have cruft if (and only if) that broken one is covered
>> by the former one.
>
> Thanks, that's a much better way of saying what I was trying to get at.
> I don't know if that's Michael's argument or not, but it's certainly one
> I find reasonable. :)
That was exactly my thinking. A packed-without-loose storage scheme
might, for example, be interesting for people with case-insensitive or
strangely-Unicode-normalized filesystems but have colleagues who like to
use case or Unicode in their reference names. (Of course that would
still require a way to store symbolic refs and reflogs, so I'm not
saying that we're there yet.)
I also think it is a good idea to keep the backends' interfaces as
similar as possible to reduce the number of quirks that the reader has
to keep in mind.
Michael
next prev parent reply other threads:[~2017-06-24 11:14 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-23 7:01 [PATCH v2 00/29] Create a reference backend for packed refs Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 01/29] t1408: add a test of stale packed refs covered by loose refs Michael Haggerty
2017-06-23 18:59 ` Jeff King
2017-06-23 20:22 ` Junio C Hamano
2017-06-23 7:01 ` [PATCH v2 02/29] add_packed_ref(): teach function to overwrite existing refs Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 03/29] packed_ref_store: new struct Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 04/29] packed_ref_store: move `packed_refs_path` here Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 05/29] packed_ref_store: move `packed_refs_lock` member here Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 06/29] clear_packed_ref_cache(): take a `packed_ref_store *` parameter Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 07/29] validate_packed_ref_cache(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 08/29] get_packed_ref_cache(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 09/29] get_packed_refs(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 10/29] add_packed_ref(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 11/29] lock_packed_refs(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 12/29] commit_packed_refs(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 13/29] rollback_packed_refs(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 14/29] get_packed_ref(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 15/29] repack_without_refs(): " Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 16/29] packed_peel_ref(): new function, extracted from `files_peel_ref()` Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 17/29] packed_ref_store: support iteration Michael Haggerty
2017-06-23 19:12 ` Jeff King
2017-06-23 7:01 ` [PATCH v2 18/29] packed_read_raw_ref(): new function, replacing `resolve_packed_ref()` Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 19/29] packed-backend: new module for handling packed references Michael Haggerty
2017-06-23 19:35 ` Jeff King
2017-06-23 19:46 ` Stefan Beller
2017-06-23 21:20 ` Junio C Hamano
2017-06-23 7:01 ` [PATCH v2 20/29] packed_ref_store: make class into a subclass of `ref_store` Michael Haggerty
2017-06-23 19:40 ` Jeff King
2017-06-23 7:01 ` [PATCH v2 21/29] commit_packed_refs(): report errors rather than dying Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 22/29] commit_packed_refs(): use a staging file separate from the lockfile Michael Haggerty
2017-06-23 19:46 ` Jeff King
2017-06-24 11:43 ` Michael Haggerty
2017-06-24 11:57 ` Jeff King
2017-06-23 7:01 ` [PATCH v2 23/29] packed_refs_lock(): function renamed from lock_packed_refs() Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 24/29] packed_refs_lock(): report errors via a `struct strbuf *err` Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 25/29] packed_refs_unlock(), packed_refs_is_locked(): new functions Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 26/29] clear_packed_ref_cache(): don't protest if the lock is held Michael Haggerty
2017-06-23 19:49 ` Jeff King
2017-06-23 7:01 ` [PATCH v2 27/29] commit_packed_refs(): remove call to `packed_refs_unlock()` Michael Haggerty
2017-06-23 19:51 ` Jeff King
2017-06-23 7:01 ` [PATCH v2 28/29] repack_without_refs(): don't lock or unlock the packed refs Michael Haggerty
2017-06-23 19:56 ` Jeff King
2017-07-01 17:11 ` Michael Haggerty
2017-06-23 7:01 ` [PATCH v2 29/29] read_packed_refs(): die if `packed-refs` contains bogus data Michael Haggerty
2017-06-23 19:58 ` Jeff King
2017-07-01 18:15 ` Michael Haggerty
2017-06-23 19:01 ` [PATCH v2 00/29] Create a reference backend for packed refs Jeff King
2017-06-23 20:00 ` Jeff King
2017-06-23 21:47 ` Junio C Hamano
2017-06-24 1:11 ` Jeff King
2017-06-24 11:14 ` Michael Haggerty [this message]
2017-06-23 20:24 ` Junio C Hamano
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