git-annex/doc/forum/Backend_migration_and_special_remotes.mdwn
http://schnouki.net/ 6e2c78a10f
2015-09-10 08:41:16 +00:00

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I have a large repository that is backed up to hubiC with the [special remote that I wrote](https://github.com/Schnouki/git-annex-remote-hubic). When I created this repository I used the WORM backend. But as I have some duplicated files I'd like to migrate to SHA256E to avoid storing them twice. However, when migrating a file, its location on the remote is not kept:
% git annex whereis "2015-07-25 12.28.16.jpg"
whereis 2015-07-25 12.28.16.jpg (2 copies)
23fa590d-682d-43be-9851-8ba47186d763 -- [hubic]
f6642b89-2a0f-4788-8e13-be540fdfec58 -- baldr [here]
ok
% git annex migrate "2015-07-25 12.28.16.jpg" --backend SHA256E
migrate 2015-07-25 12.28.16.jpg ok
(recording state in git...)
% git annex whereis "2015-07-25 12.28.16.jpg"
whereis 2015-07-25 12.28.16.jpg (1 copy)
f6642b89-2a0f-4788-8e13-be540fdfec58 -- baldr [here]
ok
Is there any way to store in the git-annex branch that migrated files are still available on remotes without having to re-upload all of them? hubiC is quite slow and I don't really want to re-upload 90 GB from a DSL connection…
Or would it be possible to add something in the special remote protocol to "move" a key without re-uploading it?
Thanks!