[git] GIT_DISCOVERY_ACROSS_FILESYSTEM not set

I have searched and read few post but my problem is not the same as described. So here's the issue: using git clone into folder under external partition of the disk works fine but all git commands fails. can't execute git status or git log... I always get error

fatal: Not a git repository (or any parent up to mount parent /home/kozi)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

Please help me out..

.
+-- abi
+-- bionic
+-- bootable
+-- build
+-- cts
+-- dalvik
+-- development
+-- device
+-- docs
+-- external
+-- frameworks
+-- gdk
+-- hardware
+-- libcore
+-- libnativehelper
+-- ndk
+-- packages
+-- pdk
+-- prebuilts
+-- .repo
+-- sdk
+-- system
+-- tools

I came into this issue when I copy my local repository.

sudo cp -r original_repo backup_repo
cd backup_repo

git status
fatal: Not a git repository (or any parent up to mount point /data)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

I've try git init as some answer suggested, but it doesn't work.

sudo git init
Reinitialized existing Git repository in /data/HQ/SC_Educations/hq_htdocs/HQ_Educations_bak/.git/

I solved it by change the owner of the repo

sudo chown -R www:www ../backup_repo

git status
# On branch develop
nothing to commit, working directory clean

ran across this page and several like it all talking about the GIT_DISCOVERY_ACROSS_FILESYSTEM not set message. In my case our sys admin had decided that the apache2 directory needed to be on a mounted filesystem in case the disk for the server stopped working and had to get rebuilt. I found this with a simple df command:

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:48:43)--> df -h
Filesystem                           Size  Used Avail Use% Mounted on
<snip>
/dev/mapper/vgraid-lvapache           63G   54M   60G   1% /etc/apache2
<snip>

To fix this I just put the following in the root user's shell (as they are the only ones who need to be looking at etckeeper revisions:

export GIT_DISCOVERY_ACROSS_FILESYSTEM=1

and all was well and good...much joy.

More notes:

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:48:54)--> export GIT_DISCOVERY_ACROSS_FILESYSTEM=0

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:57:35)--> git status
On branch master
nothing to commit, working tree clean

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:57:40)--> touch apache2/me

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:57:45)--> git status
On branch master
Untracked files:
  (use "git add <file>..." to include in what will be committed)

    apache2/me

nothing added to commit but untracked files present (use "git add" to track)

-->  UBIk  <--:root@ns1:[/etc]
--PRODUCTION--(16:57:47)--> cd apache2

-->  UBIk  <--:root@ns1:[/etc/apache2]
--PRODUCTION--(16:57:50)--> git status
fatal: Not a git repository (or any parent up to mount point /etc/apache2)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
-->  UBIk  <--:root@ns1:[/etc/apache2]
--PRODUCTION--(16:57:52)--> export GIT_DISCOVERY_ACROSS_FILESYSTEM=1

-->  UBIk  <--:root@ns1:[/etc/apache2]
--PRODUCTION--(16:58:59)--> git status
On branch master
Untracked files:
  (use "git add <file>..." to include in what will be committed)

    me

nothing added to commit but untracked files present (use "git add" to track)

Hopefully that will help someone out somewhere... -wc

For android source code with repo, I beleive you should use REPO. if you really want to use git, you should know if the project has .git directory with ls -a. Or you have to enter the sub project directory which should include the .git.

In short, git is trying to access a repo it considers on another filesystem and to tell it explicitly that you're okay with this, you must set the environment variable GIT_DISCOVERY_ACROSS_FILESYSTEM=1

I'm working in a CI/CD environment and using a dockerized git so I have to set it in that environment docker run -e GIT_DISCOVERY_ACROSS_FILESYSTEM=1 -v $(pwd):/git --rm alpine/git rev-parse --short HEAD\'

If you're curious: Above mounts $(pwd) into the git docker container and passes "rev-parse --short HEAD" to the git command in the container, which it then runs against that mounted volums.

For complete the accepted answer, Had the same issue. First specified the remote

git remote add origin https://github.com/XXXX/YYY.git

git fetch 

Then get the code

git pull origin master

The problem is you are not in the correct directory. A simple fix in Jupyter is to do the following command:

1. Move to the GitHub directory for your installation
2. Run the GitHub command

Here is an example command to use in Jupyter:

%%bash
cd /home/ec2-user/ml_volume/GitHub_BMM
git show

Note you need to do the commands in the same cell.

Check whether you are actually under a github repo.

So, listing of .git/ should give you results..otherwise you may be some level outside your repo.

Now, cd to your repo and you are good to go.