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| author |  Junio C Hamano <gitster@pobox.com> | 2010-04-04 10:33:53 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-04-04 10:33:53 -0700 |
| commit | e640551773c9730a47779dfc93155feb092c8e3c (patch) | |
| tree | 798c74407f1e4247dcce2a59c6fad7dd0bc5b171 /Documentation | |
| parent | Add support for GIT_ONE_FILESYSTEM (diff) | |
| download | tgif-e640551773c9730a47779dfc93155feb092c8e3c.tar.xz | |
GIT_ONE_FILESYSTEM: flip the default to stop at filesystem boundaries
Regarding the new environment variable, Linus Torvalds
<torvalds@linux-foundation.org> writes on Tue, 30 Mar 2010 in
<alpine.LFD.2.00.1003301537150.3707@i5.linux-foundation.org>:
I suspect that it is _very_ unusual to have a source repo that crosses
multiple filesystems, and the original reason for this patch-series
seems to me to be likely to be more common than that multi-fs case. So
having the logic go the other way would seem to match the common case,
no?
The "crossing filesystem boundary" condition is checked by comparing
st_dev field in the result from stat(2). This is slightly worrysome if
non-POSIX ports return different values in the field even for directories
in the same work tree extracted to the same "filesystem". Erik Faye-Lund
confirms that in the msysgit port st_dev is 0, so this should be safe, as
"even Windows is safe" ;-)
This will affect those who use /.git to cram /etc and /home/me in the same
repostiory, /home is mounted from non-root filesystem, and a git operation
is done from inside /home/me/src. But that is such a corner case we don't
want to give preference over helping people who will benefit from having
this default so that they do not have to suffer from slow automounters.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/git.txt | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/git.txt b/Documentation/git.txt index bf1b45eef1..aa62083209 100644 --- a/Documentation/git.txt +++ b/Documentation/git.txt @@ -531,10 +531,14 @@ git so take care if using Cogito etc. (Useful for excluding slow-loading network directories.) 'GIT_ONE_FILESYSTEM':: - If set to a true value ("true" or a non-zero integer), stop at - filesystem boundaries when looking for a repository directory. - Like 'GIT_CEILING_DIRECTORIES', it will not affect an explicit - respository directory set via 'GIT_DIR' or on the command line. + When run in a directory that does not have ".git" repository + directory, git tries to find such a directory in the parent + directories to find the top of the working tree, but by default it + does not cross filesystem boundaries. This environment variable + can be set to false value ("false" or zero) to tell git not to + stop at filesystem boundaries. Like 'GIT_CEILING_DIRECTORIES', + this will not affect an explicit respository directory set via + 'GIT_DIR' or on the command line. git Commits ~~~~~~~~~~~ |