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Merge branch 'master' into cabal-man-pages

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Nathan Collins 2012-06-12 02:54:27 -07:00
commit fd40af6e62
7 changed files with 77 additions and 16 deletions
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4
Command/Uninit.hs
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@ -26,6 +26,10 @@ check = do
b <- current_branch
when (b == Annex.Branch.name) $ error $
"cannot uninit when the " ++ show b ++ " branch is checked out"
top <- fromRepo Git.repoPath
cwd <- liftIO getCurrentDirectory
whenM ((/=) <$> liftIO (absPath top) <*> liftIO (absPath cwd)) $ error $
"can only run uninit from the top of the git repository"
where
current_branch = Git.Ref . Prelude.head . lines <$> revhead
revhead = inRepo $ Git.Command.pipeRead

5
debian/changelog vendored
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@ -1,10 +1,11 @@
git-annex (3.20120606) UNRELEASED; urgency=low
git-annex (3.20120611) unstable; urgency=medium
* add: Prevent (most) modifications from being made to a file while it
is being added to the annex.
* initremote: Automatically describe a remote when creating it.
* uninit: Refuse to run in a subdirectory. Closes: #677076
-- Joey Hess <joeyh@debian.org> Tue, 05 Jun 2012 20:25:51 -0400
-- Joey Hess <joeyh@debian.org> Mon, 11 Jun 2012 10:32:01 -0400
git-annex (3.20120605) unstable; urgency=low

50
doc/design/assistant/blog/day_6__polish.mdwn Normal file
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@ -0,0 +1,50 @@
Since my last blog, I've been polishing the `git annex watch` command.
First, I fixed the double commits problem. There's still some extra
committing going on in the `git-annex` branch that I don't understand. It
seems like a shutdown event is somehow being triggered whenever
a git command is run by the commit thread.
I also made `git annex watch` run as a proper daemon, with locking to
prevent multiple copies running, and a pid file, and everything.
I made `git annex watch --stop` stop it.
---
Then I managed to greatly increase its startup speed. At startup, it
generates "add" events for every symlink in the tree. This is necessary
because it doesn't really know if a symlink is already added, or was
manually added before it starter, or indeed was added while it started up.
Problem was that these events were causing a lot of work staging the
symlinks -- most of which were already correctly staged.
You'd think it could just check if the same symlink was in the index.
But it can't, because the index is in a constant state of flux. The
symlinks might have just been deleted and re-added, or changed, and
the index still have the old value.
Instead, I got creative. :) We can't trust what the index says about the
symlink, but if the index happens to contian a symlink that looks right,
we can trust that the SHA1 of its blob is the right SHA1, and reuse it
when re-staging the symlink. Wham! Massive speedup!
---
Then I started running `git annex watch` on my own real git annex repos,
and noticed some problems.. Like it turns normal files already checked into
git into symlinks. And it leaks memory scanning a big tree. Oops..
---
I put together a quick screencast demoing `git annex watch`.
<video controls src="http://joeyh.name/screencasts/git-annex-watch.ogg"></video>
While making the screencast, I noticed that `git-annex watch` was spinning
in strace, which is bad news for powertop and battery usage. This seems to
be a [GHC bug](http://bugs.debian.org/677096) also affecting Xmonad. I
tried switching to GHC's threaded runtime, which solves that problem, but
causes git-annex to hang under heavy load. Tried to debug that for quite a
while, but didn't get far. Will need to investigate this further..
Am seeing indications that this problem only affects ghc 7.4.1; in
particular 7.4.2 does not seem to have the problem.

12
doc/design/assistant/windows.mdwn
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@ -22,3 +22,15 @@ Or I could try to use Cygwin.
## Deeper system integration
[NTFS Reparse Points](http://msdn.microsoft.com/en-us/library/aa365503%28v=VS.85%29.aspx) allow a program to define how the OS will interpret a file or directory in arbitrary ways. This requires writing a file system filter.
## Developement environment
Someone wrote in to say:
> For Windows Development you can easily qualify
> for Bizspark - http://www.microsoft.com/bizspark/
>
> This will get you 100% free Windows OS licenses and
> Dev tools, plus a free Azure account for cloud testing.
> (You can also now deploy Linux VMs to Azure as well)
> No money required at all.

12
doc/news/version_3.20120418.mdwn
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@ -1,12 +0,0 @@
git-annex 3.20120418 released with [[!toggle text="these changes"]]
[[!toggleable text="""
* bugfix: Adding a dotfile also caused all non-dotfiles to be added.
* bup: Properly handle key names with spaces or other things that are
not legal git refs.
* git-annex (but not git-annex-shell) supports the git help.autocorrect
configuration setting, doing fuzzy matching using the restricted
Damerau-Levenshtein edit distance, just as git does. This adds a build
dependency on the haskell edit-distance library.
* Renamed diskfree.c to avoid OSX case insensativity bug.
* cabal now installs git-annex-shell as a symlink to git-annex.
* cabal file now autodetects whether S3 support is available."""]]

6
doc/news/version_3.20120611.mdwn Normal file
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@ -0,0 +1,6 @@
git-annex 3.20120611 released with [[!toggle text="these changes"]]
[[!toggleable text="""
* add: Prevent (most) modifications from being made to a file while it
is being added to the annex.
* initremote: Automatically describe a remote when creating it.
* uninit: Refuse to run in a subdirectory. Closes: #[677076](http://bugs.debian.org/677076)"""]]

2
git-annex.cabal
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@ -1,5 +1,5 @@
Name: git-annex
Version: 3.20120606
Version: 3.20120611
Cabal-Version: >= 1.8
License: GPL
Maintainer: Joey Hess <joey@kitenet.net>