git gc --aggressive --prune = all不会从存储库中删除大文件 [英] git gc --aggressive --prune=all does not remove big file from repository

问题描述

有很多关于如何从回购中删除意外添加的大文件的SO问题，其中许多人建议使用 git gc 命令。但是，我发现它不适合我，我现在不会出现什么问题。

There are many SO questions regarding "how to remove an accidentally added big file from repo", many of them suggesting using git gc command. However, I find it not working for me and I don't now what's going wrong.

这是我所做的：

Here is what I have done:

$ git init
Initialized empty Git repository in /home/wzyboy/git/myrepo/.git/
$ echo hello >> README
$ git add README 
$ git commit -a -m 'init commit'
[master (root-commit) f21783f] init commit
 1 file changed, 1 insertion(+)
 create mode 100644 README
$ du -sh .git
152K    .git
$ cp ~/big.zip .
$ git add big.zip 
$ git commit -a -m 'adding big file'
[master 3abd0a4] adding big file
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 big.zip
$ du -sh .git
77M .git
$ git log --oneline 
3abd0a4 adding big file
f21783f init commit
$ git reset --hard f21783f
HEAD is now at f21783f init commit
$ git log --oneline 
f21783f init commit
$ git gc --aggressive --prune=all
Counting objects: 6, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (6/6), done.
Total 6 (delta 0), reused 0 (delta 0)
$ git gc --aggressive --prune=now
Counting objects: 6, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (6/6), done.
Total 6 (delta 0), reused 6 (delta 0)
$ du -sh .git
77M .git
$ git version
git version 2.2.2

在上面的控制台输出中，我创建了一个新的git仓库，添加了一个小文本文件， code> .git 目录的大小为152K，迄今为止非常好。然后我在回购中添加了一个大文件，目录膨胀到77M。但是，在我试图删除大文件（ git reset --hard 或 git rebase -i ）后，我无论如何运行 git gc 具有不同的选项，都无法恢复大文件所声明的磁盘空间。

In the console output above, I created a new git repo, added one small text file and the .git directory is 152K in size, so far so good. Then I added a big file into the repo and the directory bloats to 77M. However, aftering my attempting to remove the big file (git reset --hard or git rebase -i), I cannot recover the disk space claimed by the big file, no matter how I run git gc with different options.

任何人都可以告诉我为什么 git gc 在我的情况下不起作用？我应该如何恢复磁盘空间？是否可以使用 git gc 而不是 git filter-branch ？

Could any one tell me why git gc does not work in my case? What should I do to recover the disk space? Is it possible to recover the disk space using git gc instead of git filter-branch?

谢谢。

推荐答案

git reflog expire --expire=now --all
git gc --aggressive --prune=now

这将删除所有reflogs，请谨慎使用。

This will remove all the reflogs, so use with caution.

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