85272d8a98
Known problems: 1. Tries to tahoe start when daemon is already running. 2. If multiple tahoe remotes are set up on the same computer, they will have the same node.url configured by default, and this confuses tahoe commands. This commit was sponsored by LeastAuthority.com
80 lines
3.2 KiB
Markdown
80 lines
3.2 KiB
Markdown
git-annex can transfer data to and from configured git remotes.
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Normally those remotes are normal git repositories (bare and non-bare;
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local and remote), that store the file contents in their own git-annex
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directory.
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But, git-annex also extends git's concept of remotes, with these special
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types of remotes. These can be used just like any normal remote by git-annex.
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They cannot be used by other git commands though.
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* [[S3]] (Amazon S3, and other compatible services)
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* [[Amazon_Glacier|glacier]]
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* [[bup]]
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* [[gcrypt]] (encrypted git repositories!)
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* [[directory]]
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* [[rsync]]
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* [[webdav]]
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* [[tahoe]]
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* [[web]]
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* [[xmpp]]
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* [[hook]]
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The above special remotes are built into git-annex, and can be used
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to tie git-annex into many cloud services.
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Here are specific instructions
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for using git-annex with various services:
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* [[Amazon_S3|tips/using_Amazon_S3]]
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* [[Amazon_Glacier|tips/using_Amazon_Glacier]]
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* [[tips/Internet_Archive_via_S3]]
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* [[Box.com|tips/using_box.com_as_a_special_remote]]
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* [[Google drive|tips/googledriveannex]]
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* [[Google Cloud Storage|tips/using_Google_Cloud_Storage]]
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* [[Mega.co.nz|tips/megaannex]]
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* [[SkyDrive|tips/skydriveannex]]
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* [[OwnCloud|tips/owncloudannex]]
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* [[Flickr|tips/flickrannex]]
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* [[IMAP|forum/special_remote_for_IMAP]]
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* [[Usenet|forum/nntp__47__usenet special remote]]
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* [chef-vault](https://github.com/3ofcoins/knife-annex/)
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Want to add support for something else? [[Write your own!|external]]
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## Ways to use special remotes
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There are many use cases for a special remote. You could use it as a
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backup. You could use it to archive files offline in a drive with
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encryption enabled so if the drive is stolen your data is not. You could
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git annex move --to specialremote large files when your local drive is
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getting full, and then git annex move the files back when free space is
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again available. You could have one repository copy files to a special
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remote, and then git annex get them on another repository, to transfer the
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files between computers that do not communicate directly.
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The git-annex assistant makes it easy to set up rsync remotes using this
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last scenario, which is referred to as a transfer repository, and arranges
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to drop files from the transfer repository once they have been transferred
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to all known clients.
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None of these use cases are particular to particular special remote types.
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Most special remotes can all be used in these and other ways. It largely
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doesn't matter for your use what underlying transport the special remote
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uses.
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## Unused content on special remotes
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Over time, special remotes can accumulate file content that is no longer
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referred to by files in git. Normally, unused content in the current
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repository is found by running `git annex unused`. To detect unused content
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on special remotes, instead use `git annex unused --from`. Example:
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$ git annex unused --from mys3
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unused mys3 (checking for unused data...)
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Some annexed data on mys3 is not used by any files in this repository.
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NUMBER KEY
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1 WORM-s3-m1301674316--foo
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(To see where data was previously used, try: git log --stat -S'KEY')
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(To remove unwanted data: git-annex dropunused --from mys3 NUMBER)
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$ git annex dropunused --from mys3 1
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dropunused 12948 (from mys3...) ok
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