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Re: [PATCH] t7700: demonstrate mishandling of objects in packs with a .keep file

From
Brandon Casey <casey@nrlssc.navy.mil>
Date
Nov 3, 2008, 18:20 UTC
Message-ID
<RqVk2AkdyUcFTIGofSkQwl1GtBTXMYzMqaOQiAOmBXAyPDuWlQug-w@cipher.nrlssc.navy.mil>
In-Reply-To
<490ED3FE.8040103@op5.se>
Andreas Ericsson wrote:
Show 12 quoted lines
> drafnel@gmail.com wrote:
>> From: Brandon Casey <drafnel@gmail.com>
>>
>> Objects residing in pack files that have an associated .keep file are not
>> supposed to be repacked into new pack files, but they are.
>>
> 
> I think that's a misconception. Packfiles that are marked with .keep files
> should never be deleted. There are, afaik, no rules against packing the
> same objects into other packfiles as well. This is nifty for dumb ref
> walkers, as they can use a small pack for incremental fetching while using
> a mega-pack for initial cloning.

Having no rules against an object residing in more than one pack is different from intending for git to produce pack files with redundant objects.

I think one intention for the .keep mechanism was to allow for a size optimized pack to be produced and distributed. Currently, if I am handed such a pack file, I can not merely place it into my pack directory (along with the .idx and .keep files) and then run git-gc to remove any redundancy. Instead, I would get a _new_ pack file which would contain all of the objects in the repository and effectively double the size of my objects store. That doesn't seem like something a user would expect or should expect.

-brandon
Previous: Andreas EricssonNext: Andreas Ericsson
Message 52 of 61 in “getting list of objects for packing”
  1. Brandon CaseyOct 31, 2008
  2. Nicolas PitreOct 31, 2008
  3. Brandon CaseyOct 31, 2008
  4. Junio C HamanoOct 31, 2008
  5. Brandon CaseyOct 31, 2008
  6. Jakub NarebskiOct 31, 2008
  7. Brandon CaseyNov 1, 2008
  8. t7700: demonstrate mishandling of objects in packs with a .keep filedrafnel@gmail.com, Nov 2, 2008
  9. 1/3 packed_git: convert pack_local flag into generic bit maskdrafnel@gmail.com, Nov 2, 2008
  10. Shawn O. PearceNov 3, 2008
  11. Brandon CaseyNov 3, 2008
  12. 1/3 t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 3, 2008
  13. 2/3 packed_git: convert pack_local flag into a bitfield and add pack_keepBrandon Casey, Nov 3, 2008
  14. 3/3 pack-objects: honor '.keep' filesBrandon Casey, Nov 3, 2008
  15. Shawn O. PearceNov 3, 2008
  16. Brandon CaseyNov 5, 2008
  17. Brandon CaseyNov 6, 2008
  18. Junio C HamanoNov 7, 2008
  19. Brandon CaseyNov 7, 2008
  20. Andreas EricssonNov 7, 2008
  21. Shawn O. PearceNov 7, 2008
  22. recognize loose local objects during repackdrafnel@gmail.com, Nov 10, 2008
  23. Junio C HamanoNov 10, 2008
  24. 1/4 pack-objects: new option --honor-pack-keepBrandon Casey, Nov 7, 2008
  25. 2/4 repack: don't repack local objects in packs with .keep fileBrandon Casey, Nov 7, 2008
  26. 3/4 repack: do not fall back to incremental repacking with [-a|-A]Brandon Casey, Nov 7, 2008
  27. 4/4 builtin-gc.c: use new pack_keep bitfield to detect .keep file existenceBrandon Casey, Nov 7, 2008
  28. Andreas EricssonNov 7, 2008
  29. Andreas EricssonNov 7, 2008
  30. t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 3, 2008
  31. Andreas EricssonNov 4, 2008
  32. Brandon CaseyNov 4, 2008
  33. Junio C HamanoNov 4, 2008
  34. Brandon CaseyNov 4, 2008
  35. Andreas EricssonNov 4, 2008
  36. Junio C HamanoNov 4, 2008
  37. Jeff KingNov 12, 2008
  38. Junio C HamanoNov 12, 2008
  39. Jeff KingNov 12, 2008
  40. Brandon CaseyNov 12, 2008
  41. repack and .keep seriesBrandon Casey, Nov 12, 2008
  42. 1/6 t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 12, 2008
  43. 2/6 packed_git: convert pack_local flag into a bitfield and add pack_keepBrandon Casey, Nov 12, 2008
  44. 3/6 pack-objects: new option --honor-pack-keepBrandon Casey, Nov 12, 2008
  45. 4/6 repack: don't repack local objects in packs with .keep fileBrandon Casey, Nov 12, 2008
  46. 5/6 repack: do not fall back to incremental repacking with [-a|-A]Brandon Casey, Nov 12, 2008
  47. 6/6 builtin-gc.c: use new pack_keep bitfield to detect .keep file existenceBrandon Casey, Nov 12, 2008
  48. t7700: test that 'repack -a' packs alternate packed objectsBrandon Casey, Nov 13, 2008
  49. Junio C HamanoNov 12, 2008
  50. Junio C HamanoNov 12, 2008
  51. Andreas EricssonNov 3, 2008
  52. Brandon CaseyNov 3, 2008
  53. Andreas EricssonNov 3, 2008
  54. Brandon CaseyNov 3, 2008
  55. Andreas EricssonNov 4, 2008
  56. 2/3 packed_git: add new PACK_KEEP flag and haspackkeep() access macrodrafnel@gmail.com, Nov 2, 2008
  57. 3/3 pack-objects: honor '.keep' filesdrafnel@gmail.com, Nov 2, 2008
  58. Shawn O. PearceNov 3, 2008
  59. 1/3 t7700: demonstrate mishandling of loose objects in an alternate ODBdrafnel@gmail.com, Nov 10, 2008
  60. 2/3 sha1_file.c: split has_loose_object() into local and non-local counterpartsdrafnel@gmail.com, Nov 10, 2008
  61. 3/3 pack-objects: extend --local to mean ignore non-local loose objects toodrafnel@gmail.com, Nov 10, 2008

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