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Re: [PATCH] teach update-index --refresh about --data-unchanged

From
PWPete Wyckoff <pw@padd.com>
Date
Nov 3, 2010, 22:02 UTC
Message-ID
<20101103220243.GA6777@arf.padd.com>
In-Reply-To
<20101103183621.GA14019@burratino>
jrnieder@gmail.com wrote on Wed, 03 Nov 2010 13:36 -0500:
Show 15 quoted lines
> On Wed, Nov 03, 2010 at 10:37:40AM -0700, Junio C Hamano wrote:
> > Pete Wyckoff <pw@padd.com> writes:
> 
> >> When a repository has been copied with rsync, or cloned using
> >> a volume manager, the index can be incorrect even though the
> >> data is unchanged.  This new flag tells update-index --refresh
> >> that it is not necessary to reread the data contents.
> >
> > I know our traditional attitude towards the plumbing commands have been
> > "give them long enough rope and let users hang themselves", but this
> > particular rope feels a bit too long for my taste.
> 
> Pete, I think you mentioned the possibility of a special-case tool for
> contrib/ that just updates the inode, device number, and ctime fields?
> That sounds a little less worrying to use, as plumbing.

Yes, I'd been discussing with Jonathan offlist that I too agree this is a bit bizarre for general use. Especially when thinking about how to explain the new flag in the manpage, and how interactions with other command-line options should work.

I wrote a short C program to use existing functions from cache.h to read and write the index, updating the entries by hand. Once I figure out how to build it nicely, I'll submit for contrib/. I haven't figured out how to include the useful bits of the top-level Makefile (like SSL setting, which SHA1, -lpthread, etc.).

		-- Pete
Previous: Jonathan NiederNext: Pete Wyckoff
Message 10 of 16 in “index rebuild for cloned repo”
  1. Pete WyckoffOct 31, 2010
  2. Jonathan NiederOct 31, 2010
  3. cherry-pick/revert: transparently refresh indexJonathan Nieder, Oct 31, 2010
  4. Andreas SchwabOct 31, 2010
  5. Jonathan NiederOct 31, 2010
  6. Pete WyckoffOct 31, 2010
  7. teach update-index --refresh about --data-unchangedPete Wyckoff, Oct 31, 2010
  8. Junio C HamanoNov 3, 2010
  9. Jonathan NiederNov 3, 2010
  10. Pete WyckoffNov 3, 2010
  11. Pete WyckoffNov 14, 2010
  12. Jonathan NiederNov 14, 2010
  13. Johannes SixtNov 1, 2010
  14. Junio C HamanoNov 3, 2010
  15. Johannes SixtNov 3, 2010
  16. Nguyen Thai Ngoc DuyNov 1, 2010

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