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From: Andy Parkins <andyparkins@gmail.com>
To: git@vger.kernel.org
Subject: Re: [RFC] Submodules in GIT
Date: Fri, 1 Dec 2006 21:04:37 +0000	[thread overview]
Message-ID: <200612012104.39897.andyparkins@gmail.com> (raw)
In-Reply-To: <20061201193802.GI18810@admingilde.org>

On Friday 2006, December 01 19:38, Martin Waitz wrote:

> On Fri, Dec 01, 2006 at 07:17:17PM +0000, Andy Parkins wrote:
> > In fact, why should the submodule commits be even visible in the
> > supermodule?  That tree->submodule commit is sufficient; there isn't
> > any need to view submodule history in the supermodule.
>
> Well, but there is a need for a common object traversal.
> You need that when sending all objects between two supermodule versions
> and also when you determine which objects are still reachable.

No you don't; when traversing the supermodule history you will come across 
trees that have submodule commit hashes in them, that is all the other end 
needs to know.  If it wants it can then connect to the submodule and clone 
submodule to submodule.  The whole operation doesn't have to be done in the 
supermodule though.

> The easiest way to implement the common object traversal is to have all
> objects in one object repository.

That's true; but is it the right way?  I really really think the submodule 
objects should be in the submodule itself.

> It may be possible to use two object stores and still do the common
> object traversal but I do not think that gives you any benefits.

There is one benefit - you can git-clone the submodule just as you would if it 
were not a submodule.  In fact, from the submodule's point of view it knows 
nothing about the supermodule.

> You still don't have a totally separated repository then, because
> you can't do a reachability analysis in the submodule repository alone.

I'm going to guess by reachability analysis, you mean that the submodule 
doesn't know that some of it's commits are referenced by the supermodule.  As 
I suggested elsewhere in the thread, that's easily fixed by making a 
refs/supermodule/commitXXXX file for each supermodule commit that references 
as particular submodule commit.  Then you can git-prune, git-fsck whenever 
you want.


Andy
-- 
Dr Andrew Parkins, M Eng (Hons), AMIEE

  reply	other threads:[~2006-12-01 21:07 UTC|newest]

Thread overview: 252+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-20 21:51 [RFC] Submodules in GIT Martin Waitz
2006-11-20 22:16 ` Jakub Narebski
2006-11-20 22:28   ` Martin Waitz
2006-11-20 22:43   ` Junio C Hamano
2006-11-20 23:02     ` Jakub Narebski
2006-11-20 23:52       ` Martin Waitz
2006-11-21  1:31       ` Sam Vilain
2006-11-20 23:05     ` Linus Torvalds
2006-11-20 23:25       ` J. Bruce Fields
2006-11-20 23:33         ` Martin Waitz
2006-11-21 18:01           ` J. Bruce Fields
2006-11-21 19:32             ` Martin Waitz
2006-11-20 23:29       ` Martin Waitz
2006-11-21  0:10       ` Junio C Hamano
2006-11-21  0:42         ` Jakub Narebski
2006-11-21  6:21           ` Martin Waitz
2006-11-21 10:04             ` Jakub Narebski
2006-11-21 11:49               ` Martin Waitz
2006-11-21  6:27         ` Martin Waitz
2006-11-21  7:36           ` Junio C Hamano
2006-11-21  7:55             ` Martin Waitz
2006-11-21 22:31       ` Yann Dirson
2006-11-21 22:51         ` Linus Torvalds
2006-11-21 22:59           ` Linus Torvalds
2006-11-21 23:54           ` Yann Dirson
2006-11-22  3:40             ` Shawn Pearce
2006-11-23 23:23               ` Yann Dirson
2006-11-25  6:53                 ` Shawn Pearce
2006-11-25 11:12                   ` Yann Dirson
2006-11-25 18:57                     ` Linus Torvalds
2006-11-25 19:19                       ` Steven Grimm
2006-11-25 19:30                         ` Linus Torvalds
2006-11-25 23:49                           ` Yann Dirson
2006-11-26  1:14                             ` Sven Verdoolaege
2006-11-26  1:32                               ` Yann Dirson
2006-11-26  3:39                             ` Linus Torvalds
2006-11-26  8:05                               ` Daniel Barkalow
2006-11-28  9:36                                 ` Andreas Ericsson
2006-11-28 10:29                                   ` Andy Parkins
2006-11-28 10:50                                     ` Jakub Narebski
2006-11-28 13:35                                       ` Andy Parkins
2006-11-28 15:44                                         ` Shawn Pearce
2006-11-28 16:29                                           ` Andy Parkins
2006-11-28 16:36                                             ` Shawn Pearce
2006-11-28 17:38                                             ` Jon Loeliger
2006-11-29 16:15                                             ` Martin Waitz
2006-11-30 11:57                                             ` sf
     [not found]                                               ` <200611301255.41733.andyparkins@gmail.com>
2006-11-30 14:00                                                 ` Stephan Feder
2006-11-30 14:49                                                   ` Andy Parkins
2006-11-30 15:20                                                     ` Sven Verdoolaege
2006-11-30 15:30                                                       ` Andy Parkins
2006-11-30 15:50                                                         ` Andreas Ericsson
2006-11-30 16:08                                                           ` Andy Parkins
2006-11-30 16:33                                                         ` Sven Verdoolaege
2006-12-01  0:01                                                           ` Andy Parkins
2006-12-01  0:11                                                             ` Jakub Narebski
2006-12-01  9:32                                                             ` Sven Verdoolaege
2006-12-01 10:19                                                               ` Andy Parkins
2006-11-30 17:19                                                         ` Martin Waitz
2006-11-30 16:05                                                     ` sf
2006-11-30 16:12                                                       ` sf
2006-12-01  9:19                                                       ` Andy Parkins
2006-12-01  9:57                                                         ` Martin Waitz
2006-12-01 10:29                                                           ` Andy Parkins
2006-12-01 10:42                                                             ` Sven Verdoolaege
2006-12-01 11:02                                                               ` Andy Parkins
2006-12-01 11:10                                                                 ` Sven Verdoolaege
2006-12-01 11:45                                                                   ` sf
2006-12-01 12:12                                                                   ` Andy Parkins
2006-12-01 12:28                                                                     ` Martin Waitz
2006-12-01 14:11                                                                       ` Andy Parkins
2006-12-01 15:12                                                                         ` Martin Waitz
2006-12-01 11:46                                                                 ` Martin Waitz
2006-12-01 12:16                                                                   ` Andy Parkins
2006-12-01 12:34                                                                     ` Martin Waitz
2006-12-01 13:59                                                                       ` Andy Parkins
2006-12-01 14:07                                                                         ` Martin Waitz
2006-12-01 11:31                                                             ` Martin Waitz
2006-12-01 12:20                                                               ` Andy Parkins
2006-12-01 12:37                                                                 ` Martin Waitz
2006-12-02 15:16                                                                   ` Jakub Narebski
2006-11-28 19:58                                         ` Steven Grimm
2006-11-28 21:02                                           ` Shawn Pearce
2006-11-29 16:03                                         ` Martin Waitz
2006-11-29 20:00                                           ` Andy Parkins
2006-11-30 12:16                                             ` Andreas Ericsson
2006-11-30 12:40                                               ` Andy Parkins
2006-11-30 17:06                                             ` Martin Waitz
2006-11-30 18:57                                               ` Andreas Ericsson
2006-12-01  8:49                                                 ` Andy Parkins
2006-12-01  9:33                                                   ` Andreas Ericsson
2006-12-01 10:38                                                     ` Andy Parkins
2006-12-01 12:03                                                 ` sf
2006-12-01 12:11                                                   ` Martin Waitz
2006-12-01 13:21                                                     ` sf
2006-12-01 13:43                                                       ` Martin Waitz
2006-12-01 14:23                                                         ` Stephan Feder
2006-12-01 15:07                                                           ` Martin Waitz
2006-12-01 16:04                                                             ` Stephan Feder
2006-12-01 16:15                                                               ` Martin Waitz
2006-12-05  9:01                                                 ` Uwe Kleine-Koenig
2006-12-05 10:33                                                   ` Andreas Ericsson
2006-12-05 11:11                                                     ` Jakub Narebski
2006-12-05 15:02                                                     ` Uwe Kleine-Koenig
2006-12-05 15:30                                                       ` Andreas Ericsson
2006-12-05 16:00                                                   ` Sven Verdoolaege
2006-12-01  9:02                                               ` Andy Parkins
2006-12-01 11:00                                                 ` Martin Waitz
2006-12-01 12:09                                                   ` sf
2006-12-01 12:12                                                     ` Martin Waitz
2006-12-01 13:05                                                       ` sf
2006-12-01 13:35                                                         ` Martin Waitz
2006-12-01 13:43                                                           ` Andreas Ericsson
2006-12-01 13:46                                                             ` Martin Waitz
2006-12-01 14:52                                                               ` Andreas Ericsson
2006-12-01 15:00                                                                 ` Martin Waitz
2006-12-01 16:38                                                                   ` Andreas Ericsson
2006-12-01 16:49                                                                     ` Linus Torvalds
2006-12-01 17:08                                                                       ` sf
2006-12-01 18:06                                                                         ` Andreas Ericsson
2006-12-01 20:13                                                                         ` Linus Torvalds
2006-12-01 20:30                                                                           ` Martin Waitz
2006-12-01 23:23                                                                             ` Alan Chandler
2006-12-01 22:06                                                                           ` Josef Weidendorfer
2006-12-01 22:12                                                                             ` Martin Waitz
2006-12-01 22:26                                                                               ` Josef Weidendorfer
2006-12-01 22:40                                                                                 ` Martin Waitz
2006-12-01 23:17                                                                               ` Josef Weidendorfer
2006-12-02 20:24                                                                                 ` Martin Waitz
2006-12-03  0:55                                                                                   ` Josef Weidendorfer
2006-12-03  6:29                                                                                     ` Martin Waitz
2006-12-01 22:26                                                                             ` Linus Torvalds
2006-12-01 22:41                                                                               ` sf
2006-12-01 23:03                                                                                 ` Josef Weidendorfer
2006-12-01 23:09                                                                                 ` Linus Torvalds
2006-12-01 23:36                                                                                   ` Josef Weidendorfer
2006-12-02  0:12                                                                                     ` Linus Torvalds
2006-12-02  9:22                                                                                       ` Andy Parkins
     [not found]                                                                                         ` <200612021255.59972.Josef.Weidendorfer@gmx.de>
2006-12-03  9:42                                                                                           ` Andy Parkins
2006-12-02 11:32                                                                                       ` Josef Weidendorfer
2006-12-02 19:52                                                                                         ` Linus Torvalds
2006-12-02 20:21                                                                                           ` Martin Waitz
2006-12-02 20:46                                                                                             ` Linus Torvalds
2006-12-02 20:58                                                                                               ` Martin Waitz
2006-12-03  1:11                                                                                                 ` Josef Weidendorfer
2006-12-02 20:18                                                                                       ` Martin Waitz
2006-12-02 20:44                                                                                         ` Linus Torvalds
2006-12-02 21:06                                                                                           ` Martin Waitz
2006-12-02 21:29                                                                                             ` Linus Torvalds
2006-12-02 21:22                                                                                           ` Linus Torvalds
2006-12-03  2:07                                                                                             ` Thoughts about memory requirements in traversals [Was: Re: [RFC] Submodules in GIT] Josef Weidendorfer
2006-12-03  2:25                                                                                               ` Linus Torvalds
2006-12-03  2:46                                                                                               ` Shawn Pearce
2006-12-03  3:21                                                                                                 ` Josef Weidendorfer
2006-12-03 11:10                                                                                                   ` Jakub Narebski
2006-12-03 11:47                                                                                                     ` Josef Weidendorfer
2006-12-03 20:46                                                                                           ` [RFC] Submodules in GIT Martin Waitz
2006-12-03 22:16                                                                                       ` Sven Verdoolaege
2006-12-03 22:32                                                                                         ` Linus Torvalds
2006-12-03 22:49                                                                                           ` Jakub Narebski
2006-12-04 11:12                                                                                           ` Josef Weidendorfer
2006-12-01 23:49                                                                                   ` sf
2006-12-02 18:57                                                                                     ` Torgil Svensson
2006-12-02 19:41                                                                                       ` Linus Torvalds
2006-12-03  9:19                                                                                         ` Torgil Svensson
2006-12-03 17:54                                                                                           ` Linus Torvalds
2006-12-04 20:26                                                                                             ` Torgil Svensson
2006-12-04 20:41                                                                                               ` Linus Torvalds
2006-12-04 21:36                                                                                                 ` Torgil Svensson
2006-12-05 10:42                                                                                                   ` Andreas Ericsson
2006-12-05 11:09                                                                                                     ` Jakub Narebski
2006-12-05 10:38                                                                                                 ` Andreas Ericsson
2006-12-05 11:01                                                                                                   ` Jakub Narebski
2006-12-03 19:33                                                                                         ` Andy Parkins
2006-12-05  2:33                                                                                         ` Daniel Barkalow
2006-12-05 22:07                                                                                           ` sf
2006-12-09 21:34                                                                                         ` R. Steve McKown
2006-12-10 11:47                                                                                           ` Torgil Svensson
2006-12-14 21:27                                                                                             ` Torgil Svensson
2006-12-14 23:07                                                                                               ` Josef Weidendorfer
2006-12-15 17:43                                                                                                 ` Torgil Svensson
2006-12-15 21:42                                                                                                   ` Josef Weidendorfer
2006-12-15 23:43                                                                                                     ` Torgil Svensson
2006-12-16  1:13                                                                                                       ` Torgil Svensson
2006-12-16  1:20                                                                                                         ` Torgil Svensson
2006-12-16  1:34                                                                                                           ` Jakub Narebski
2006-12-16  8:40                                                                                                             ` Torgil Svensson
2006-12-16  9:57                                                                                                               ` Jakub Narebski
2006-12-16 10:25                                                                                                                 ` Junio C Hamano
2006-12-16 15:05                                                                                                                 ` Torgil Svensson
2006-12-16 15:38                                                                                                                   ` Torgil Svensson
2006-12-16 16:32                                                                                                                   ` Jakub Narebski
2006-12-17  0:21                                                                                                                     ` Torgil Svensson
2006-12-16  1:49                                                                                                         ` Linus Torvalds
2006-12-16  2:12                                                                                                           ` Linus Torvalds
2006-12-16  8:50                                                                                                             ` Torgil Svensson
2006-12-02 20:12                                                                                   ` Martin Waitz
2006-12-01 22:55                                                                               ` Josef Weidendorfer
2006-12-01 23:07                                                                                 ` Martin Waitz
2006-12-01 23:30                                                                                 ` Linus Torvalds
2006-12-02  0:14                                                                                   ` Josef Weidendorfer
2006-12-02  0:33                                                                                     ` Linus Torvalds
2006-12-02  9:27                                                                                       ` Andy Parkins
2006-12-04 18:56                                                                                       ` Michael K. Edwards
2006-12-05  1:31                                                                                         ` Sam Vilain
2006-12-01 22:35                                                                           ` sf
2006-12-08 18:29                                                                           ` Jon Loeliger
2006-12-08 18:45                                                                             ` Sven Verdoolaege
2006-12-12  8:32                                                                             ` Andreas Ericsson
2006-12-01 17:14                                                                       ` Martin Waitz
2006-12-01 16:57                                                                     ` Martin Waitz
2006-12-01 18:08                                                                       ` Andreas Ericsson
2006-12-01 18:51                                                                         ` Martin Waitz
2006-12-01 13:51                                                           ` Stephan Feder
2006-12-01 14:58                                                             ` Martin Waitz
2006-12-01 15:47                                                               ` Stephan Feder
2006-12-01 16:54                                                                 ` Martin Waitz
2006-12-01 17:33                                                                   ` Stephan Feder
2006-12-01 18:48                                                                     ` Martin Waitz
2006-12-01 23:34                                                                       ` sf
2006-12-02 19:46                                                                         ` Martin Waitz
2006-12-01 19:17                                                                     ` Andy Parkins
2006-12-01 19:38                                                                       ` Martin Waitz
2006-12-01 21:04                                                                         ` Andy Parkins [this message]
2006-12-01 21:37                                                                           ` Martin Waitz
2006-12-01 21:54                                                                             ` Andy Parkins
2006-12-01 22:08                                                                               ` Martin Waitz
2006-12-02 10:04                                                                                 ` Andy Parkins
2006-12-02 13:50                                                                                   ` Josef Weidendorfer
2006-12-02 20:43                                                                                     ` Martin Waitz
2006-12-03  1:02                                                                                       ` Josef Weidendorfer
2006-12-02 20:40                                                                                   ` Martin Waitz
2006-12-02 13:14                                                                           ` Jakub Narebski
2006-12-02 13:08                                                                     ` Jakub Narebski
2006-12-02 12:48                                                   ` Jakub Narebski
2006-11-28 17:28                                   ` Daniel Barkalow
2006-11-28 18:08                                     ` Sven Verdoolaege
2006-11-28 18:37                                       ` Daniel Barkalow
2006-11-28 19:06                                         ` Sven Verdoolaege
2006-11-28 20:41                                           ` Daniel Barkalow
2006-11-28 21:10                                             ` Shawn Pearce
2006-11-28 21:32                                               ` Daniel Barkalow
2006-11-28 21:53                                                 ` Linus Torvalds
2006-11-20 22:49 ` Jakub Narebski
2006-11-21  7:21 ` Shawn Pearce
2006-11-22  5:29 ` Petr Baudis
2006-12-02 20:16 ` Jakub Narebski
2006-12-03  1:24   ` Robin Rosenberg
2006-12-03  1:31     ` Jakub Narebski
2006-12-03 12:22       ` Robin Rosenberg
2006-12-03 12:31         ` Jakub Narebski
2006-12-03 11:00     ` Jakub Narebski

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