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added forum item re: auto-fetching annexed files on open()

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Ilya_Shlyakhter 2020-02-19 21:11:06 +00:00 • committed by admin
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It would make git-annex much simpler to use if annexed files could be transparently auto-fetched when programs try to read them, without requiring an explicit `git-annex-get`.
What approaches have people tried to make this work, and what were the results / takeaways?
Some related pages: [[news/sharebox_a_FUSE_filesystem_for_git-annex]]; [[todo/union_mounting]]; [[using fanotify|forum/expire_files__44___move_to_other_hosts]] .
My attempt at a FUSE filesystem that calls `git-annex-get` as needed: [here](https://github.com/broadinstitute/viral-ngs/blob/is-dx-benchmarks/tools/git-annex-remotes/git-annex-on-demand.py). However, it gets an annexed file as soon as a symlink to it is read, which can also happen when just listing a directory; it also only works with locked annexed files.