From: Jeff King <peff@peff.net>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: propagating repo corruption across clone
Date: Sun, 24 Mar 2013 15:23:50 -0400 [thread overview]
Message-ID: <20130324192350.GA20688@sigill.intra.peff.net> (raw)
In-Reply-To: <CACBZZX6czzJRF9TEsc8c+=LND6SxaVvrZdbcZ+TfUZTWQOpW0Q@mail.gmail.com>
On Sun, Mar 24, 2013 at 08:01:33PM +0100, Ævar Arnfjörð Bjarmason wrote:
> On Sun, Mar 24, 2013 at 7:31 PM, Jeff King <peff@peff.net> wrote:
> >
> > I don't have details on the KDE corruption, or why it wasn't detected
> > (if it was one of the cases I mentioned above, or a more subtle issue).
>
> One thing worth mentioning is this part of the article:
>
> "Originally, mirrored clones were in fact not used, but non-mirrored
> clones on the anongits come with their own set of issues, and are more
> prone to getting stopped up by legitimate, authenticated force pushes,
> ref deletions, and so on – and if we set the refspec such that those
> are allowed through silently, we don’t gain much. "
>
> So the only reason they were even using --mirror was because they were
> running into those problems with fetching.
I think the --mirror thing is a red herring. It should not be changing
the transport used, and that is the part of git that is expected to
catch such corruption.
But I haven't seen exactly what the corruption is, nor exactly what
commands they used to clone. I've invited the blog author to give more
details in this thread.
> So aside from the problems with --mirror I think we should have
> something that updates your local refs to be exactly like they are on
> the other end, i.e. deletes some, non-fast-forwards others etc.
> (obviously behind several --force options and so on). But such an
> option *wouldn't* accept corrupted objects.
That _should_ be how "git fetch --prune +refs/*:refs/*" behaves (and
that refspec is set up when you use "--mirror"; we should probably have
it turn on --prune, too, but I do not think you can do so via a config
option currently).
-Peff
next prev parent reply other threads:[~2013-03-24 19:24 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 18:31 propagating repo corruption across clone Jeff King
2013-03-24 19:01 ` Ævar Arnfjörð Bjarmason
2013-03-24 19:23 ` Jeff King [this message]
2013-03-25 13:43 ` Jeff Mitchell
2013-03-25 14:56 ` Jeff King
2013-03-25 15:31 ` Duy Nguyen
2013-03-25 15:56 ` Jeff King
2013-03-25 16:32 ` Jeff Mitchell
2013-03-25 20:07 ` Jeff King
2013-03-26 13:43 ` Jeff Mitchell
2013-03-26 16:55 ` Jeff King
2013-03-26 21:59 ` Philip Oakley
2013-03-26 22:03 ` Jeff King
2013-03-26 23:20 ` Rich Fromm
2013-03-27 1:25 ` Jonathan Nieder
2013-03-27 18:23 ` Rich Fromm
2013-03-27 19:49 ` Jeff King
2013-03-27 20:04 ` Jeff King
2013-03-27 3:47 ` Junio C Hamano
2013-03-27 6:19 ` Sitaram Chamarty
2013-03-27 15:03 ` Junio C Hamano
2013-03-27 15:47 ` Sitaram Chamarty
2013-03-27 18:51 ` Rich Fromm
2013-03-27 19:13 ` Junio C Hamano
2013-03-28 13:52 ` Jeff Mitchell
2013-03-28 13:48 ` Jeff Mitchell
2013-03-26 1:06 ` Duy Nguyen
2013-03-24 19:16 ` Ilari Liusvaara
2013-03-25 20:01 ` Junio C Hamano
2013-03-25 20:05 ` Jeff King
2013-03-25 20:14 ` [PATCH 0/9] corrupt object potpourri Jeff King
2013-03-25 20:16 ` [PATCH 1/9] stream_blob_to_fd: detect errors reading from stream Jeff King
2013-03-26 21:27 ` Junio C Hamano
2013-03-25 20:17 ` [PATCH 2/9] check_sha1_signature: check return value from read_istream Jeff King
2013-03-25 20:18 ` [PATCH 3/9] read_istream_filtered: propagate read error from upstream Jeff King
2013-03-25 20:21 ` [PATCH 4/9] avoid infinite loop in read_istream_loose Jeff King
2013-03-25 20:21 ` [PATCH 5/9] add test for streaming corrupt blobs Jeff King
2013-03-25 21:10 ` Jonathan Nieder
2013-03-25 21:26 ` Jeff King
2013-03-27 20:27 ` Jeff King
2013-03-27 20:35 ` Junio C Hamano
2013-03-25 20:22 ` [PATCH 6/9] streaming_write_entry: propagate streaming errors Jeff King
2013-03-25 21:35 ` Eric Sunshine
2013-03-25 21:37 ` Jeff King
2013-03-25 21:39 ` Jonathan Nieder
2013-03-25 21:49 ` [PATCH v2 " Jeff King
2013-03-25 23:29 ` Jonathan Nieder
2013-03-26 21:38 ` Junio C Hamano
2013-03-25 20:22 ` [PATCH 7/9] add tests for cloning corrupted repositories Jeff King
2013-03-25 20:23 ` [PATCH 8/9] clone: die on errors from unpack_trees Jeff King
2013-03-26 21:40 ` Junio C Hamano
2013-03-26 22:22 ` [PATCH 10/9] clone: leave repo in place after checkout errors Jeff King
2013-03-26 22:32 ` Jonathan Nieder
2013-03-27 1:03 ` Jeff King
2013-03-25 20:26 ` [PATCH 9/9] clone: run check_everything_connected Jeff King
2013-03-26 0:53 ` Duy Nguyen
2013-03-26 22:24 ` Jeff King
2013-03-26 21:50 ` Junio C Hamano
2013-03-28 0:40 ` Duy Nguyen
2013-03-31 7:57 ` Duy Nguyen
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