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Scenario
--------
You are a new git-annex user. You have already files spread around many computers and wish to migrate those into git-annex, without having to recopy all files all over the place.
Let's say, for example, you have a server, named `marcos` and a workstation named `angela`. You have your audio collection stored in `/srv/mp3` in `marcos` and `~/mp3` on `angela`, but only `marcos` has all the files, and `angela` only has a subset.
We also assume that `marcos` has an SSH server.
How do you add all this stuff to git-annex?
Create the biggest git-annex repository
---------------------------------------
Start with `marcos`, with the complete directory:
cd /srv/mp3
git init
git annex init
git annex add
You may want to use [[direct mode]] if you want to avoid creating a forest of symlinks there, but this is generally error-prone and should be avoided.
This will checksum all files and add them to the `git-annex` branch of the git repository. Wait for this process to complete.
Create the smaller repo and synchronise
---------------------------------------
On `angela`, we want to synchronise the git annex metadata with `marcos`. We need to initialize a git repo with `marcos` as a remote:
cd ~/mp3
git init
git remote add marcos marcos.example.com:/srv/mp3
git fetch marcos
git annex status # this should display the two repos
git annex add .
This will, again, checksum all files and add them to git annex. Once that is done, you can verify that the files are really the same as marcos with `whereis`:
git annex whereis
This should display something like:
whereis Orange Seeds/I remember.wav (2 copies)
b7802161-c984-4c9f-8d05-787a29c41cfe -- marcos (anarcat@marcos:/srv/mp3)
c2ca4a13-9a5f-461b-a44b-53255ed3e2f9 -- here (anarcat@angela)
ok
Once you are sure things went on okay, you can synchronise this with `marcos`:
git annex sync
This will push the metadata information to marcos, so it knows which files are available on `angela`. From there on, you can freely get and move files between the two repos!
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