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Joey Hess 2018-08-14 11:02:55 -04:00
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[[!comment format=mdwn
username="joey"
subject="""comment 1"""
date="2018-08-14T14:50:51Z"
content="""
You can use `git annex setpresentkey` to tell git-annex that a remote with
a given uuid contains a given content.
For example, if the proxy remote is named proxy
and you know it contains all annexed files in the current directory
and below, you could run this to tell git-annex that the proxy contains
all the files it thought it didn't contain:
uuid=$(git config remote.proxy.annex-uuid)
git annex find --not --in proxy --format "\${key} $uuid 1\n" | \
git annex setpresentkey --batch
There will be some problems using this empty proxy remote, eg if you
run `git annex move somefile --from proxy`, git-annex will try to
delete the content from it, see the content is not there, and update its
location tracking to say that the proxy does not contain the content any
longer. `git annex fsck --from proxy` will do similar so you'll need to
avoid it.
And, you'll probably want to use `git annex trust proxy` so that `git-annex
drop` assumes it contains the content you said it has; by default git-annex
will double-check and that check will fail.
To avoid all these kind of issues with the proxy, a better approach might
be to make a custom special remote that actually accesses the data on the
tape drive. See [[special remote implementation howto|special_remotes/external]]
"""]]